Patent Description:
In certain instances, one or more structures may need to be mounted together, such as when mounting an engine to a vehicle, such as an aircraft, for example. In these instances, due to assembly constraints, manufacturing tolerances, and the like, the structures may not be properly aligned to enable fastening together using a conventional fastener. Rather, the structures may be slightly offset, such that the use of conventional fasteners is not feasible. Further, in certain instances, due to assembly constraints or manufacturing tolerances, one of the structures may need to be adjusted rotationally and linearly relative to the other structure at the installation site to enable the proper mounting of the structure to the other structure.

Accordingly, it is desirable to provide a locking positioning system for coupling structures together, which enables adjustment of one structure relative to the other structure in multiple degrees of freedom. Furthermore, other desirable features and characteristics of the present invention will become apparent from the subsequent detailed description and the appended claims, taken in conjunction with the accompanying drawings and the foregoing technical field and background. The document <CIT> shows a positioning system of the prior art.

According to various embodiments, provided is a locking positioning system. The locking positioning system includes a bearing including an inner race and an outer race. The outer race is coupled to the inner race, and the outer race is to be coupled to a second structure. The locking positioning system includes a housing movably coupled to the inner race, and the housing is to be coupled to a first structure. The locking positioning system includes a lock ring coupled to the housing. The lock ring is movable between a first position, in which the inner race is held in a fixed position, and a second position, in which the inner race is movable to adjust a position of the second structure relative to the first structure.

The locking positioning system includes a mechanical fastener that couples the lock ring to the inner race. The inner race defines an inner race attachment bore and the lock ring defines a lock ring bore coaxially aligned with the inner race attachment bore, and the mechanical fastener is received within the inner race attachment bore and the lock ring bore to couple the lock ring to the inner race. The lock ring bore is defined as a counterbore through a surface of the lock ring. The locking positioning system includes a spring disposed between a head of the mechanical fastener and a seat defined within the inner race attachment bore, and the spring biases the lock ring in the first position. The housing further includes a flange that includes a plurality of bores, with a head of the mechanical fastener received within one of the plurality of bores in the first position. The housing defines a plurality of housing teeth, and the lock ring defines a plurality of lock teeth that engage the plurality of housing teeth in the first position. The housing has a first housing end opposite a second housing end, with the plurality of housing teeth defined at the first housing end and a serrated slot defined at the second housing end, and the serrated slot is configured to receive a second mechanical fastener to couple the housing to the first structure. The second mechanical fastener includes a serrated washer, which engages with the serrated slot. The plurality of housing teeth are defined about a circumference of the housing and the plurality of lock teeth are defined about an inner circumference of the lock ring. The outer race defines at least one coupling bore to couple the outer race to the second structure. The outer race includes at least one threaded insert to receive a mechanical fastener to couple the outer race to the second structure. The lock ring includes a graspable surface defined about an outer perimeter of the lock ring. The first structure is a component associated with a vehicle, and the second structure is a component of an engine of the vehicle. The bearing is a spherical bearing.

In an embodiment, the locking positioning system includes a spherical bearing including an inner race and an outer race, and the outer race is coupled to the inner race. The outer race is to be coupled to a second structure. The locking positioning system includes a housing movably coupled to the inner race. The housing is to be coupled to a first structure and the housing defines a plurality of housing teeth about a circumference of the housing. The locking positioning system includes a lock ring coupled to the housing and the inner race. The lock ring defines a plurality of lock teeth about an inner circumference of the lock ring that engage the plurality of housing teeth in a first position. The lock ring movable between the first position, in which the inner race is held in a fixed position, and a second position, in which the inner race is movable to adjust a position of the second structure relative to the first structure.

The inner race defines an inner race attachment bore and the lock ring defines a lock ring bore coaxially aligned with the inner race attachment bore, and a mechanical fastener is received within the inner race attachment bore and the lock ring bore to couple the lock ring to the inner race. The locking positioning system includes a spring disposed between a head of the mechanical fastener and a seat defined within the inner race attachment bore, and the spring biases the lock ring in the first position. The housing defines a plurality of housing teeth about a circumference of the housing, and the lock ring defines a plurality of lock teeth about an inner circumference of the lock ring that engage the plurality of housing teeth in the first position. The housing has a first housing end opposite a second housing end, with the plurality of housing teeth defined at the first housing end and a serrated slot defined at the second housing end, and the serrated slot is configured to receive a second mechanical fastener to couple the housing to the first structure.

In addition, those skilled in the art will appreciate that embodiments of the present disclosure may be practiced in conjunction with any type of device that would benefit from a locking positioning system and the use of the locking positioning system for a gas turbine engine and a vehicle described herein is merely one exemplary embodiment according to the present disclosure. In addition, while the locking positioning system is described herein as being used with a gas turbine engine onboard a vehicle, such as a bus, motorcycle, train, automobile, marine vessel, aircraft, rotorcraft and the like, the various teachings of the present disclosure can be used with a gas turbine engine on a stationary platform. Further, it should be noted that many alternative or additional functional relationships or physical connections may be present in an embodiment of the present disclosure. In addition, while the figures shown herein depict an example with certain arrangements of elements, additional intervening elements, devices, features, or components may be present in an actual embodiment. It should also be understood that the drawings are merely illustrative and may not be drawn to scale.

As used herein, the term "axial" refers to a direction that is generally parallel to or coincident with an axis of rotation, axis of symmetry, or centerline of a component or components. For example, in a cylinder or disc with a centerline and generally circular ends or opposing faces, the "axial" direction may refer to the direction that generally extends in parallel to the centerline between the opposite ends or faces. In certain instances, the term "axial" may be utilized with respect to components that are not cylindrical (or otherwise radially symmetric). For example, the "axial" direction for a rectangular housing containing a rotating shaft may be viewed as a direction that is generally parallel to or coincident with the rotational axis of the shaft. Furthermore, the term "radially" as used herein may refer to a direction or a relationship of components with respect to a line extending outward from a shared centerline, axis, or similar reference, for example in a plane of a cylinder or disc that is perpendicular to the centerline or axis. In certain instances, components may be viewed as "radially" aligned even though one or both of the components may not be cylindrical (or otherwise radially symmetric). Furthermore, the terms "axial" and "radial" (and any derivatives) may encompass directional relationships that are other than precisely aligned with (e.g., oblique to) the true axial and radial dimensions, provided the relationship is predominantly in the respective nominal axial or radial direction. As used herein, the term "substantially" denotes within <NUM>% to account for manufacturing tolerances. Also, as used herein, the term "about" denotes within <NUM>% to account for manufacturing tolerances.

With reference to <FIG>, a locking positioning system <NUM> is shown. In this example, three locking positioning systems <NUM> are shown for adjustably coupling a first, fixed structure <NUM> to a second, movable structure <NUM>. In one example, the first, fixed structure <NUM> comprises a component associated with a vehicle, and the second, movable structure <NUM> is a component associated with an engine of the vehicle. In the example of the vehicle as an aircraft, the first, fixed structure is a pylon on an airframe of the aircraft. In the example the aircraft, the second, movable structure <NUM> is a portion of an engine, such as a transcowl associated with a gas turbine engine. For example, the first, fixed structure <NUM> comprises the inboard longeron <NUM> of the engine pylon <NUM> of commonly assigned<CIT> (Attorney Docket No. H223619-US (<NUM>)); and the second, movable structure <NUM> comprises the transcowl <NUM> of the gas turbine engine <NUM> of commonly assigned <CIT> (Attorney Docket No. H223619-US (<NUM>)) titled "Pylon System for Coupling Engine to Vehicle" to Alstad et al. It should be noted that in <FIG>, the first, fixed structure <NUM> and the second, movable structure <NUM> are simplified for clarity. The first, fixed structure <NUM> includes at least one or a plurality of attachment bores 102a, and the second, movable structure <NUM> includes at least one or a plurality of attachment points 104a. In this example, the first, fixed structure <NUM> includes three attachment bores 102a and the second, movable structure <NUM> includes three attachment points 104a. Each attachment point 104a includes a central receiving bore <NUM> and a pair of attachment holes <NUM> spaced apart from the central receiving bore <NUM> and opposite each other. The respective locking positioning system <NUM> is coupled to a respective one of the attachment bores 102a and a respective one of the attachment points 104a. As will be discussed, the locking positioning system <NUM> enables the movement or adjustment of the second, movable structure <NUM> relative to the first structure in multiple degrees of freedom enabling rotational and translational movement of the second, movable structure <NUM> relative to the first, fixed structure <NUM>. Once the adjustment is complete, the locking positioning system <NUM> locks to fix the position and orientation of the second, movable structure <NUM> relative to the first, fixed structure <NUM>.

With reference to <FIG>, a perspective view of the locking positioning system <NUM> is shown. In one example, the locking positioning system <NUM> includes a bearing, such as a spherical bearing <NUM>, a lock ring <NUM>, a housing <NUM>, a mechanical fastener or attachment bolt <NUM>, and at least one or a plurality of lock assemblies <NUM> (<FIG>). As will be discussed, the locking positioning system <NUM> is movable between a first, locked state and a second, unlocked state to enable the second, movable structure <NUM> (<FIG>) to be positioned in the desired orientation (rotation and translation) relative to the first, fixed structure <NUM> (<FIG>).

With reference to <FIG>, the spherical bearing <NUM> includes an inner race <NUM> and an outer race <NUM>. The spherical bearing <NUM> is composed of metal or metal alloy, and is cast, machined, forged, stamped, additively manufactured, etc. The inner race <NUM> is coupled to an inner bore <NUM> of the outer race <NUM>, and is movable relative to the outer race <NUM>. Generally, the inner race <NUM> rotates angularly within the inner bore <NUM> of the outer race <NUM> relative to a central axis CA of the outer race <NUM>, and also rotates about the central axis CA. The central axis CA of the outer race <NUM> is substantially parallel and colinear with a center axis C of the locking positioning system <NUM>. The inner race <NUM> includes an inner race bore <NUM>, an outer surface <NUM> and at least one or a plurality of inner race attachment bores <NUM>. The inner race bore <NUM> is cylindrical and defines an inner perimeter or circumference of the inner race <NUM>. The inner race bore <NUM> also defines a plurality of threads <NUM>. The plurality of threads <NUM> cooperate with a plurality of threads <NUM> defined on the housing <NUM> to enable the inner race <NUM> to move relative to the housing <NUM>. In this regard, a rotation of the inner race <NUM> causes a translation of the inner race <NUM> along the housing <NUM>, and thus, the outer race <NUM> coupled to the inner race <NUM>. The outer surface <NUM> defines the outer perimeter or circumference of the inner race <NUM>. The outer surface <NUM> is substantially smooth, and arcuate to enable the angular movement of the inner race <NUM> relative to the outer race <NUM>.

In this example, the inner race <NUM> defines three inner race attachment bores <NUM>. It should be noted that in other examples, the inner race <NUM> may be configured differently. Each of the inner race attachment bores <NUM> is cylindrical, and substantially smooth. In one example, with reference to <FIG>, each of the inner race attachment bores <NUM> includes a reduced diameter proximate a first side 120a of the inner race <NUM>. The first side 120a of the inner race <NUM> is opposite a second side 120b. The reduced diameter of each of the inner race attachment bores <NUM> defines a respective seat <NUM>. As will be discussed, the seat <NUM> cooperates with a respective one of the lock assemblies <NUM> to limit a movement of the respective one of the lock assemblies <NUM>.

With reference back to <FIG>, the outer race <NUM> surrounds the inner race <NUM>. The outer race <NUM> includes the inner bore <NUM>, an outer race surface <NUM> and at least one or a pair of coupling flanges <NUM>. The inner bore <NUM> receives the inner race <NUM>, and defines the inner perimeter or spherical diameter of the outer race <NUM>. The inner bore <NUM> has a smooth, arcuate surface, which cooperates with the spherical diameter or outer surface <NUM> of the inner race <NUM> to enable the inner race <NUM> to move and articulate relative to the outer race <NUM>. The outer race <NUM> remains coupled to the inner race <NUM> due to the contact between the inner bore <NUM> of the inner race <NUM> and the outer surface <NUM> of the outer race <NUM>. The outer race surface <NUM> defines an outer perimeter or surface of the outer race <NUM>. The pair of coupling flanges <NUM> are coupled to the outer race surface <NUM> so as to extend axially from the outer race surface <NUM> on opposed sides of the outer race surface <NUM>. Each of the coupling flanges <NUM> define a coupling bore <NUM>. The coupling bore <NUM> is defined to extend along an axis substantially parallel to the central axis CA of the outer race <NUM>. In this example, the coupling bore <NUM> includes a threaded insert <NUM>, however, in other embodiments, the coupling bore <NUM> may include a plurality of internal threads. The threaded insert <NUM> includes a plurality of internal threads. The threaded insert <NUM> receives a mechanical fastener, such as a bolt <NUM> (<FIG>), to couple the outer race <NUM> to the second, movable structure <NUM> (<FIG>). In one example, the threaded insert <NUM> also includes a plurality of external threads and defines a groove about an outer circumference of the threaded insert <NUM>. The threaded insert <NUM> is threadably coupled to the coupling bore <NUM>, and stakes are driven through the coupling flange <NUM> and the coupling bore <NUM> to contact the groove of the threaded insert <NUM> to couple the threaded insert <NUM> to the coupling bore <NUM>. In other examples, the threaded insert <NUM> may be press-fit into the coupling bore <NUM>, or secured through another technique. Each of the coupling flanges <NUM> may define a plurality of reliefs <NUM> for mass savings. The reliefs <NUM> may be formed on both a first side 142a and an opposite second side 142b of each of the coupling flanges <NUM>. Generally, the reliefs <NUM> do not extend through the coupling flange <NUM> from the first side 142a to the second side 142b. The reliefs <NUM> are generally defined such that an outer perimeter of the coupling flange <NUM> is solid, along with a solid branch interconnecting a central portion of the coupling flange <NUM> with the outer race surface <NUM>.

The lock ring <NUM> is coupled to the housing <NUM>. As will be discussed, the lock ring <NUM> is movable between a first position, in which the inner race <NUM> and the outer race <NUM> are held in a fixed position and the locking positioning system <NUM> is the first, locked state; and a second position, in which the inner race <NUM> is movable to adjust a position of the second, movable structure <NUM> relative to the first, fixed structure <NUM> and the locking positioning system <NUM> is in the second, unlocked state. The lock ring <NUM> is composed of metal or metal alloy, and is cast, machined, forged, stamped, additively manufactured, etc. The lock ring <NUM> includes a lock ring body <NUM>, a lock ring flange <NUM>, lock ring bores <NUM> and an inner lock ring bore <NUM>.

The lock ring body <NUM> is cylindrical, and extends from a first ring end 150a to an opposite second ring end 150b. The lock ring flange <NUM> is defined about an outer perimeter or circumference of the lock ring <NUM> at the first ring end 150a and extends axially from the first ring end 150a toward the second ring end 150b. The lock ring flange <NUM> extends axially outward to define a graspable surface <NUM> to enable a user to manipulate the lock ring <NUM>. In one example, the graspable surface <NUM> is textured, and includes knurling, but the graspable surface <NUM> may be smooth, dimpled, etc. With reference to <FIG>, the lock ring bores <NUM> are defined through the lock ring body <NUM> at the second ring end 150b. In this example, the lock ring <NUM> includes three lock ring bores <NUM>, however, the lock ring <NUM> may include any number of bores that comports with the number of lock assemblies <NUM>. With reference to <FIG>, the lock ring bores <NUM> are defined as counterbores through the second ring end 150b such that the lock ring bores <NUM> do not extend through the lock ring <NUM> from the first ring end 150a to the second ring end 150b. Generally, the lock ring bores <NUM> terminate within the lock ring <NUM> within a region of the lock ring body <NUM> surrounded by the lock ring flange <NUM>. In this example, each of the lock ring bores <NUM> include a respective locking insert <NUM>. The locking inserts <NUM> are internally threaded, and threadably engage with a plurality of threads defined on a mechanical fastener, such as a shoulder bolt <NUM> of a respective one of the lock assemblies <NUM>. In one example, the locking insert <NUM> also includes a plurality of external threads and defines a groove about an outer circumference of the locking insert <NUM>. The locking inserts <NUM> is threadably coupled to the lock ring bore <NUM>, and stakes are driven through the lock ring <NUM> and the lock ring bore <NUM> to contact the groove to couple the locking insert <NUM> to the lock ring bore <NUM>. In other examples, the locking insert <NUM> may be press-fit into the lock ring bore <NUM>, or secured through another technique. Each of the lock ring bores <NUM> is coaxially aligned with a respective one of the inner race attachment bores <NUM> to receive the shoulder bolt <NUM> of the respective one of the lock assemblies <NUM> (<FIG>).

The inner lock ring bore <NUM> extends from the first ring end 150a to the second ring end 150b. In one example, the inner lock ring bore <NUM> is defined as a countersunk hole through the lock ring <NUM>. With reference to <FIG>, the inner lock ring bore <NUM> includes a plurality of lock teeth <NUM> defined about an inner perimeter or circumference of the inner lock ring bore <NUM> at the second ring end 150b. A tooth space <NUM> is defined between adjacent lock teeth <NUM>, and the tooth space <NUM> receives a respective tooth of a plurality of housing teeth <NUM> (<FIG>) of the housing <NUM> (<FIG>) when the lock ring <NUM> is in the first position and the locking positioning system <NUM> is in the first, locked state (<FIG>). Each of the housing teeth <NUM> is spaced apart from the respective tooth space <NUM> and the lock teeth <NUM> when the lock ring <NUM> is in the second position and the locking positioning system <NUM> is in the second, unlocked state (<FIG>).

The housing <NUM> defines the housing teeth <NUM> at a first housing end 114a and defines a slot <NUM> at a second housing end 114b, with the second housing end 114b opposite the first housing end 114a. The housing <NUM> is composed of metal or metal alloy, and is cast, machined, forged, stamped, additively manufactured, etc. With reference to <FIG>, the housing <NUM> is cylindrical, with an open perimeter at the first housing end 114a and a closed perimeter at the second housing end 114b. The housing <NUM> includes the plurality of threads <NUM> that extend from the first housing end 114a to the second housing end 114b, and cooperate with the threads <NUM> of the inner race <NUM> to enable the inner race <NUM> to move relative to the housing <NUM> in the second position of the lock ring <NUM>. The housing teeth <NUM> extend axially from the first housing end 114a to engage with the lock ring <NUM>, as discussed. The housing teeth <NUM> also define a stop <NUM> at the first housing end 114a. In this regard, the housing teeth <NUM> are defined to extend radially outward from the outer circumference of the housing <NUM>, which forms a shelf or annular ledge defining the stop <NUM> that limits the further advancement of the inner race <NUM> relative to the housing <NUM>. Stated another way, the stop <NUM> retains the inner race <NUM> on the housing <NUM>. A housing tooth space <NUM> defined between adjacent housing teeth <NUM> receives a respective one of the lock teeth <NUM> when the lock ring <NUM> is in the first position and the locking positioning system <NUM> is in the first, locked state (<FIG>). Each of the lock teeth <NUM> is spaced apart from the respective housing tooth space <NUM> and the housing teeth <NUM> when the lock ring <NUM> is in the second position and the locking positioning system <NUM> is in the second, unlocked state (<FIG>).

With reference to <FIG>, an interior surface of the housing <NUM> is substantially smooth. At the second housing end 114b, the slot <NUM> is defined to enable the attachment bolt <NUM> to pass through the housing <NUM> and into the first, fixed structure <NUM> (<FIG>). In this example, the slot <NUM> is elongated, and is defined along an axis that is substantially parallel to a housing central axis HCA. The housing central axis HCA is substantially parallel and colinear with the central axis CA of the outer race <NUM> and the center axis C of the locking positioning system <NUM> (<FIG>). In this example, the slot <NUM> includes a plurality of slot serrations <NUM>. The slot serrations <NUM> are defined about a perimeter of the slot <NUM>, and cooperate with a serrated washer <NUM> (<FIG>) of the attachment bolt <NUM> to couple the attachment bolt <NUM> (<FIG>) to the housing <NUM>. Generally, the slot serrations <NUM> enable the attachment bolt <NUM> to be coupled at various locations along the slot <NUM>, which enables the translation of the second, movable structure <NUM> (<FIG>) relative to the first, fixed structure <NUM>. It should be noted that the number of slot serrations <NUM> and the spacing between adjacent slot serrations <NUM> is predetermined to enable finite locations for coupling the attachment bolt <NUM> to the slot <NUM>.

With reference to <FIG>, the attachment bolt <NUM> is coupled to the housing <NUM> via the serrated washer <NUM>. The attachment bolt <NUM> and the serrated washer <NUM> are each composed of metal or metal alloy, and are cast, machined, forged, additively manufactured, etc. The serrated washer <NUM> includes a plurality of washer serrations <NUM> that engage with the slot serrations <NUM> to maintain the position of the attachment bolt <NUM> relative to the housing <NUM>. The serrated washer <NUM> is coupled about a head 116a of the attachment bolt <NUM>. The head 116a of the attachment bolt <NUM> includes a tool coupling feature <NUM>, such as a hexagonal outer surface, internal hexagonal socket, etc. for coupling the attachment bolt <NUM> to a tool, such as a torque wrench, hex key, etc. A shank 116b of the attachment bolt <NUM> is coupled to the first, fixed structure <NUM>. In one example, the shank 116b includes threads and the attachment bore 102a is threaded to enable the attachment bolt <NUM> to be threadably coupled to the first, fixed structure <NUM>. Alternatively, or in addition, a nut (not shown) may be coupled to the shank 116b to further couple the attachment bolt <NUM> to the first, fixed structure <NUM>. While the attachment bolt <NUM> is described and illustrated herein as a bolt, it should be noted that any suitable mechanical fastener may be employed to removably couple the housing <NUM>, and thus, the locking positioning system <NUM> to the first, fixed structure <NUM>.

With reference to <FIG>, in this example, the locking positioning system <NUM> includes three lock assemblies <NUM>. Each of the lock assemblies <NUM> includes a shoulder bolt <NUM> and a biasing member or spring <NUM>. The shoulder bolt <NUM> is composed of metal or metal alloy, and is cast, machined, forged, additively manufactured, etc. The spring <NUM> is composed of spring steel, and is extruded and wound. With reference to <FIG>, the shoulder bolt <NUM> includes a head 180a and a shank 180b. The head 180a is cylindrical, and has a diameter greater than the shank 180b to provide a second seat <NUM> for the spring <NUM>. The shank 180b is a stepped shank, and includes a smooth portion <NUM> that extends from the head 180a to a threaded portion <NUM>. The threaded portion <NUM> has a diameter that is different and smaller than the smooth portion <NUM>. The threaded portion <NUM> includes a plurality of threads to engage with the internal threads of a respective one of the locking inserts <NUM>. Generally, with reference to <FIG>, when the threaded portion <NUM> is engaged with and coupled to the locking inserts <NUM>, the head 180a of the shoulder bolt <NUM> extends beyond the second side 120b of the inner race <NUM>. By sizing the shank 180b such that the head 180a is external to the inner race <NUM>, additional travel of the shoulder bolt <NUM> is provided to ensure that the lock teeth <NUM> disengage with the housing teeth <NUM> in the second position of the lock ring <NUM>. With reference back to <FIG>, the spring <NUM> is coupled about the shoulder bolt <NUM> and one end of the spring <NUM> is seated on the second seat <NUM> of the head 180a. The shoulder bolt <NUM> is inserted through a respective one of the inner race attachment bores <NUM> such that the spring <NUM> is received about the smooth portion <NUM> and retained within the respective inner race attachment bore <NUM> between the seat <NUM> and the second seat <NUM>. Generally, as will be discussed, the spring <NUM> is compressible by the head 180a of the shoulder bolt <NUM> to enable the lock ring <NUM> to be spaced apart from the housing <NUM> in the second position (<FIG>). In one example, the springs <NUM> compress to enable the lock ring <NUM> to move about <NUM> (<NUM> inches), which is about equal to or greater than a height of the housing teeth <NUM>. In one example, the user applies a force F of about <NUM> to about <NUM> ( about <NUM> pounds (lbs. ) to about <NUM> pounds (lbs. )) to move the lock ring <NUM> away from the housing <NUM>. Once a force is removed from the lock ring <NUM>, the springs <NUM> expand, and engage the lock teeth <NUM> with the housing teeth <NUM> to return the lock ring <NUM> to the first position. In one example, each of the springs <NUM> have a spring rate of about <NUM> N/mm to about <NUM> N/mm (about <NUM> to about <NUM> pounds per inch (lbs. Generally, the locking positioning system <NUM> has a spring rate of about <NUM> N/mm to about <NUM> N/mm (about <NUM> pounds per inch (lbs. ) to about <NUM> pounds per inch (lbs. /in )), and while in this example, the spring rate is divided over three springs <NUM>, any number of springs may be employed.

In order to assemble the locking positioning system <NUM>, in one example, with the outer race <NUM> and the inner race <NUM> formed, the inner race <NUM> is coupled to the outer race <NUM> so as to be movable relative to the outer race <NUM>. The threaded inserts <NUM> are coupled to the coupling flanges <NUM> of the outer race <NUM>. With the housing <NUM> formed, the threads <NUM> of the housing <NUM> are engaged with the threads <NUM> of the inner race <NUM>. With the springs <NUM> positioned about the shoulder bolts <NUM>, the shoulder bolts <NUM> are inserted into the inner race attachment bores <NUM>. With the lock ring <NUM> formed, the locking inserts <NUM> are coupled to the lock ring <NUM>. The shoulder bolts <NUM> are engaged with the locking inserts <NUM> and the lock teeth <NUM> are engaged with the housing teeth <NUM>. With the lock teeth <NUM> engaged with the housing teeth <NUM>, the lock ring <NUM> is in the first position and the locking positioning system <NUM> is in the first, locked state. In the first position and first, locked state, the inner race <NUM> and the outer race <NUM> are held in a fixed position, and thus, the position of the second, movable structure <NUM> relative to the first, fixed structure <NUM> is fixed and inhibited from movement during operation of the vehicle, for example, during flight of the aircraft.

In the first, locked state, the locking positioning system <NUM> is coupled to the second, movable structure <NUM>. The bolts <NUM> are inserted through the attachment holes <NUM> and into the threaded inserts <NUM> to couple the locking positioning system <NUM> to the second, movable structure <NUM>. With the serrated washer <NUM> coupled about the head 116a of the attachment bolt <NUM>, the attachment bolt <NUM> is inserted through the slot <NUM> and translated along the slot serrations <NUM> of the slot <NUM> until the second, movable structure <NUM> is located at a lateral position relative to the first, fixed structure <NUM>.

In order to adjust a rotational or angular position of the second, movable structure <NUM> relative to the first, fixed structure, the lock ring <NUM> is moved from the first position to the second position. With reference to <FIG>, the lock ring <NUM> is shown in the second position, and the locking positioning system <NUM> is in the second, unlocked state. In the second position and the second, unlocked state, the inner race <NUM> is movable relative to the housing <NUM> to adjust a position of the second, movable structure <NUM> relative to the first, fixed structure <NUM>. In order to move the lock ring <NUM> to the second position, the force F is applied along the center axis C of the locking positioning system <NUM> to move the lock ring <NUM> relative to the housing <NUM>. In one example, the force F is applied by a user gripping the lock ring <NUM> and pulling the lock ring <NUM> away from the housing <NUM>. As the lock ring <NUM> moves along the center axis C, the shoulder bolts <NUM> translate within the inner race attachment bores <NUM> and compress the springs <NUM>. Once the lock ring <NUM> is moved such that the lock teeth <NUM> are spaced apart from the housing teeth <NUM>, the inner race <NUM> is rotatable by the movement of the lock ring <NUM>. In this regard, as the lock ring <NUM> is coupled to the inner race <NUM> via the lock assemblies <NUM>, a movement of the lock ring <NUM> results in a corresponding movement of the inner race <NUM>. In the second position, the lock ring <NUM> is manipulatable to move the second, movable structure <NUM> (<FIG>) angularly relative to the first, fixed structure <NUM> (<FIG>). The lock ring <NUM> is also rotatable in the second position, which enables the inner race <NUM> to be translated relative to the housing <NUM> along the center axis C, with the movement of the inner race <NUM> limited by the stop <NUM> of the housing <NUM>. The movement of the inner race <NUM> along the center axis C enables the second, movable structure <NUM> to be spaced closer to or further apart from the first, fixed structure <NUM> as the inner race <NUM> is coupled to the outer race <NUM> and the outer race <NUM> translates with the inner race <NUM>. Once the adjustment of the second, movable structure <NUM> relative to the first, fixed structure <NUM> is complete, the lock ring <NUM> is released by the user, and the springs <NUM> expand, pulling the lock ring <NUM>, and thus, the lock teeth <NUM> into engagement with the housing teeth <NUM>. The springs <NUM> bias the lock ring <NUM> in the first position and bias the locking positioning system <NUM> in the first, locked state.

Thus, with reference to <FIG>, the locking positioning system <NUM> enables adjustment of the second, movable structure <NUM> in multiple degrees of freedom. In this regard, the attachment bolt <NUM> cooperates with the slot <NUM> of the housing <NUM> to enable adjustment of the second, movable structure along an X-axis. The threads <NUM> of the inner race <NUM> cooperates with the threads <NUM> of the housing <NUM> to enable adjustment of the second, movable structure along a Y-axis, which is parallel to the center axis C. The angular rotation of the inner race <NUM> relative to the outer race <NUM> enables adjustment of the second, movable structure <NUM> in a yaw direction, rotating about the Y-axis. The rotation of the inner race <NUM> relative to the outer race <NUM> also enables adjustment of the second, movable structure <NUM> in a roll direction, rotating about the Z-axis. The rotation of the inner race <NUM> relative to the outer race <NUM> enables adjustment of the second, movable structure <NUM> in a pitch direction, rotating about the X-axis.

It should be noted that in other embodiments, the locking positioning system <NUM> may be configured differently to enable movement of the second, movable structure <NUM> relative to the first, fixed structure <NUM> in various degrees of freedom. For example, with reference to <FIG>, a locking positioning system <NUM> is shown. As the locking positioning system <NUM> includes components that are the same or similar to components of the locking positioning system <NUM> discussed with regard to <FIG>, the same reference numerals will be used to denote the same or similar components. In this example, the locking positioning system <NUM> includes a bearing, such as a spherical bearing <NUM>, a lock ring <NUM>, the housing <NUM> (<FIG>), the attachment bolt <NUM>, and the plurality of lock assemblies <NUM> (<FIG>). The locking positioning system <NUM> is movable between the first, locked state and the second, unlocked state to enable the second, movable structure <NUM> (<FIG>) to be positioned in the desired orientation (rotation and translation) relative to the first, fixed structure <NUM> (<FIG>).

With reference to <FIG>, the spherical bearing <NUM> includes an inner race <NUM> and an outer race <NUM>. The spherical bearing <NUM> is composed of metal or metal alloy, and is cast, machined, forged, stamped, additively manufactured, etc. The inner race <NUM> is coupled to an inner bore <NUM> of the outer race <NUM>, and is movable relative to the outer race <NUM>. Generally, with reference to <FIG>, the inner race <NUM> rotates angularly within the inner bore <NUM> of the outer race <NUM> relative to a central axis CA1 of the outer race <NUM>, and also rotates about the central axis CA1. The central axis CA1 of the outer race <NUM> is substantially parallel and colinear with a center axis C1 of the locking positioning system <NUM>. With reference back to <FIG>, the inner race <NUM> includes an inner race bore <NUM>, an outer surface <NUM>, at least one or a plurality of inner race attachment bores <NUM> and at least one or a plurality of inner race slots <NUM>. The inner race bore <NUM> is cylindrical and defines an inner perimeter or circumference of the inner race <NUM>. The inner race bore <NUM> also defines the plurality of threads <NUM>. The plurality of threads <NUM> cooperate with the plurality of threads <NUM> defined on the housing <NUM> to enable the inner race <NUM>, and thus, the outer race <NUM> coupled to the inner race <NUM>, to translate relative to the housing <NUM>. The outer surface <NUM> defines the outer perimeter or circumference of the inner race <NUM>. The outer surface <NUM> is substantially smooth, and arcuate to enable the angular movement of the inner race <NUM> relative to the outer race <NUM>.

In this example, the inner race <NUM> defines three inner race attachment bores <NUM>. It should be noted that in other examples, the inner race <NUM> may be configured differently. Each of the inner race attachment bores <NUM> is cylindrical, and substantially smooth. In one example, with reference to <FIG>, each of the inner race attachment bores <NUM> includes a reduced diameter proximate a first side 220a of the inner race <NUM>. The first side 220a of the inner race <NUM> is opposite a second side 220b. The reduced diameter of each of the inner race attachment bores <NUM> defines the respective seat <NUM>.

With reference back to <FIG>, the inner race slots <NUM> are defined between the inner race attachment bores <NUM> and alternate with the inner race attachment bores <NUM>. In this example, the inner race <NUM> includes three inner race slots <NUM> that each alternate with the inner race attachment bores <NUM> about the circumference of the inner race <NUM>. The inner race slots <NUM> are arcuate, and reduce a mass of the inner race <NUM>. The inner race slots <NUM> extend from the first side 220a to the second side 220b, however, in other embodiments, the inner race slots <NUM> may not extend through the entirety of the inner race <NUM>.

The outer race <NUM> surrounds the inner race <NUM>. The outer race <NUM> includes the inner bore <NUM>, an outer race surface <NUM>, a plurality of coupling bores <NUM> and at least one or a plurality of outer race slots <NUM>. The inner bore <NUM> receives the inner race <NUM>, and defines the inner perimeter or circumference of the outer race <NUM>. The inner bore <NUM> has a smooth, arcuate surface, which cooperates with the outer surface <NUM> of the inner race <NUM> to enable the inner race <NUM> to move and articulate relative to the outer race <NUM>. The outer race surface <NUM> defines an outer perimeter or surface of the outer race <NUM>. In this example, the outer race surface <NUM> is discontinuous, or is interrupted by slots <NUM>. The slots <NUM> are defined through the outer race surface <NUM> and are in communication with the outer race slots <NUM>. In this example, the slots <NUM> are defined so as to be positioned between adjacent ones of the coupling bores <NUM>. The slots <NUM> provide a mass savings for the outer race <NUM>.

The coupling bores <NUM> are each defined to extend along an axis substantially parallel to the central axis CA of the outer race <NUM>. In this example, each of the coupling bores <NUM> includes the threaded insert <NUM>, however, in other embodiments, the coupling bores <NUM> may include a plurality of internal threads. The threaded insert <NUM> includes the plurality of internal threads to receive the mechanical fastener, such as the bolt, to couple the outer race <NUM> to the second, movable structure <NUM> (<FIG>). The threaded insert <NUM> may be press-fit into the respective coupling bore <NUM>, for example. In this example, the outer race <NUM> has four coupling bores <NUM>, but the outer race <NUM> may have any desired number of coupling bores <NUM>.

The outer race slots <NUM> are defined through the outer race <NUM> from a first race end 222a to an opposite second race end 222b. In this example, the outer race <NUM> includes four outer race slots <NUM>, which are spaced apart about the circumference of the outer race <NUM>. In this example, the outer race slots <NUM> alternate with the coupling bores <NUM> about the circumference of the outer race <NUM>. The outer race slots <NUM> provide a mass savings for the outer race <NUM>. In this example, the outer race slots <NUM> are in communication with the slots <NUM>.

The lock ring <NUM> is coupled to the housing <NUM>. The lock ring <NUM> is movable between the first position, in which the inner race <NUM> and the outer race <NUM> are held in a fixed position and the locking positioning system <NUM> is in first, locked state; and a second position, in which the inner race <NUM> is movable relative to the housing <NUM> to adjust a position of the second, movable structure <NUM> relative to the first, fixed structure <NUM> (<FIG>) and the locking positioning system <NUM> is in the second, unlocked state. The lock ring <NUM> is composed of metal or metal alloy, and is cast, machined, forged, stamped, additively manufactured, etc. The lock ring <NUM> includes a lock ring body <NUM>, lock ring bores <NUM> and an inner lock ring bore <NUM>.

The lock ring body <NUM> is cylindrical, and extends from a first ring end 250a to an opposite second ring end 250b. The lock ring body <NUM> defines a graspable surface <NUM> about an outer perimeter or circumference of the lock ring <NUM> to enable a user to manipulate the lock ring <NUM>. In one example, the graspable surface <NUM> is textured, and includes knurling, but the graspable surface <NUM> may be smooth, dimpled, etc. The lock ring bores <NUM> are defined through the lock ring body <NUM> from the first ring end 250a to the second ring end 250b (<FIG>). In this example, the lock ring <NUM> includes three lock ring bores <NUM>, however, the lock ring <NUM> may include any number of bores that comports with the number of lock assemblies <NUM>. In this example, each of the lock ring bores <NUM> include a respective locking insert <NUM>. The locking inserts <NUM> are internally threaded, and threadably engage with a plurality of threads defined on a mechanical fastener, such as the shoulder bolt <NUM> of a respective one of the lock assemblies <NUM> (<FIG>). In certain examples, the locking inserts <NUM> may comprise the locking inserts <NUM>, if desired. Each of the lock ring bores <NUM> is coaxially aligned with a respective one of the inner race attachment bores <NUM> to receive the shoulder bolt <NUM> of the respective one of the lock assemblies <NUM> (<FIG>).

The inner lock ring bore <NUM> extends from the first ring end 250a to the second ring end 250b. In one example, the inner lock ring bore <NUM> is defined as a countersunk hole through the lock ring <NUM>. With reference to <FIG>, the inner lock ring bore <NUM> includes the plurality of lock teeth <NUM> defined about a perimeter or circumference of the inner lock ring bore <NUM> at the second ring end 250b. The tooth space <NUM> is defined between adjacent lock teeth <NUM>, and the tooth space <NUM> receives the respective tooth of the plurality of housing teeth <NUM> of the housing <NUM> when the lock ring <NUM> is in the first position and the locking positioning system <NUM> is in the first, locked state. Each of the housing teeth <NUM> is spaced apart from the respective tooth space <NUM> and the lock teeth <NUM> when the lock ring <NUM> is in the second position and the locking positioning system <NUM> is in the second, unlocked state.

The housing <NUM> defines the housing teeth <NUM> at the first housing end 114a and defines the slot <NUM> at the second housing end 114b. The housing <NUM> includes the plurality of threads <NUM> that extend from the first housing end 114a to the second housing end 114b and cooperate with the threads <NUM> of the inner race <NUM> to enable the inner race <NUM> to move relative to the housing <NUM> in the second position of the lock ring <NUM>. The housing teeth <NUM> extend axially from the first housing end 114a to engage with the lock ring <NUM>, as discussed. The housing teeth <NUM> also define the stop <NUM> at the first housing end 114a to limit the further advancement of the inner race <NUM> relative to the housing <NUM>. The housing tooth space <NUM> defined between adjacent housing teeth <NUM> receives the respective one of the lock teeth <NUM> when the lock ring <NUM> is in the first position and the locking positioning system <NUM> is in the first, locked state. Each of the lock teeth <NUM> is spaced apart from the respective housing tooth space <NUM> and the housing teeth <NUM> when the lock ring <NUM> is in the second position and the locking positioning system <NUM> is in the second, unlocked state. The slot <NUM> includes the slot serrations <NUM> that cooperate with the serrated washer <NUM> of the attachment bolt <NUM> to couple the attachment bolt <NUM> to the housing <NUM>.

The attachment bolt <NUM> is coupled to the housing <NUM> via the serrated washer <NUM>. The serrated washer <NUM> includes the washer serrations <NUM> that engage with the slot serrations <NUM> to maintain the position of the attachment bolt <NUM> relative to the housing <NUM>. The head 116a of the attachment bolt <NUM> includes the tool coupling feature <NUM> for coupling the attachment bolt <NUM> to the tool. The shank 116b of the attachment bolt <NUM> is coupled to the first, fixed structure <NUM>. In one example, the shank 116b includes threads and the attachment bore 102a is threaded to enable the attachment bolt <NUM> to be threadably coupled to the first, fixed structure <NUM> (<FIG>).

With reference to <FIG>, in this example, the locking positioning system <NUM> includes three lock assemblies <NUM>. Each of the lock assemblies <NUM> includes the shoulder bolt <NUM> and the biasing member or spring <NUM>. The head 180a provides the second seat <NUM> for the spring <NUM>. The shank 180b includes the smooth portion <NUM> that extends from the head 180a to the threaded portion <NUM>. The threaded portion <NUM> includes the plurality of threads to engage with the internal threads of a respective one of the locking inserts <NUM>. Generally, with reference to <FIG>, when the threaded portion <NUM> is engaged with and coupled to the locking inserts <NUM>, the head 180a of the shoulder bolt <NUM> extends beyond the second side 220b of the inner race <NUM>. By sizing the shank 180b such that the head 180a is external to the inner race <NUM>, additional travel of the shoulder bolt <NUM> is provided to ensure that the lock teeth <NUM> disengage with the housing teeth <NUM> in the second position of the lock ring <NUM>. The shoulder bolt <NUM> is inserted through a respective one of the inner race attachment bores <NUM> such that the spring <NUM> is received about the smooth portion <NUM> and retained within the respective inner race attachment bore <NUM> between the seat <NUM> and the second seat <NUM>. The spring <NUM> is compressible by the head 180a of the shoulder bolt <NUM> to enable the lock ring <NUM> to be spaced apart from the housing <NUM> in the second position. Once a force is removed from the lock ring <NUM>, the springs <NUM> expand, and engage the lock teeth <NUM> with the housing teeth <NUM> to return the lock ring <NUM> to the first position.

As the use and assembly of the locking positioning system <NUM> is similar or substantially the same as the use an assembly of the locking positioning system <NUM>, discussed with regard to <FIG>, the use and assembly of the locking positioning system <NUM> will be discussed briefly herein. Briefly, the inner race <NUM> is coupled to the outer race <NUM> so as to be movable relative to the outer race <NUM>. The threaded inserts <NUM> are coupled to the coupling bores <NUM> of the outer race <NUM>. The threads <NUM> of the housing <NUM> are engaged with the threads <NUM> of the inner race <NUM>. With the springs <NUM> positioned about the shoulder bolts <NUM>, the shoulder bolts <NUM> are inserted into the inner race attachment bores <NUM>. The locking inserts <NUM> are coupled to the lock ring <NUM>. The shoulder bolts <NUM> are engaged with the locking inserts <NUM> and the lock teeth <NUM> are engaged with the housing teeth <NUM>. With the lock teeth <NUM> engaged with the housing teeth <NUM>, the lock ring <NUM> is in the first position and the locking positioning system <NUM> is in the first, locked state.

In the first, locked state, the locking positioning system <NUM> is coupled to the second, movable structure <NUM> (<FIG>). Fasteners are inserted through the attachment holes <NUM> (<FIG>) and into the threaded inserts <NUM> to couple the locking positioning system <NUM> to the second, movable structure <NUM> (<FIG>). With the serrated washer <NUM> coupled about the head 116a of the attachment bolt <NUM>, the attachment bolt <NUM> is inserted through the slot <NUM> and translated along the slot serrations <NUM> of the slot <NUM> until the second, movable structure <NUM> is located at a lateral position relative to the first, fixed structure <NUM> (<FIG>). In the first position and first, locked state, the inner race <NUM> and the outer race <NUM> are held in a fixed position, and thus, the position of the second, movable structure <NUM> relative to the first, fixed structure <NUM> is fixed and inhibited from movement during operation of the vehicle, for example, during flight of the aircraft.

In order to adjust a rotational or angular position of the second, movable structure <NUM> relative to the first, fixed structure, the lock ring <NUM> is moved from the first position to the second position. In the second position and the second, unlocked state, the inner race <NUM> is movable relative to the housing <NUM> to adjust a position of the second, movable structure <NUM> relative to the first, fixed structure <NUM>. In order to move the lock ring <NUM> to the second position, the force F (<FIG>) is applied along the center axis C of the locking positioning system <NUM> to move the lock ring <NUM> relative to the housing <NUM>. In one example, the force F is applied by a user gripping the lock ring <NUM> and pulling the lock ring <NUM> away from the housing <NUM>. As the lock ring <NUM> moves along the center axis C1, the shoulder bolts <NUM> translate within the inner race attachment bores <NUM> and compress the springs <NUM>. Once the lock ring <NUM> is moved such that the lock teeth <NUM> are spaced apart from the housing teeth <NUM>, the inner race <NUM> is rotatable by the movement of the lock ring <NUM>. In the second position, the lock ring <NUM> is manipulatable to move the second, movable structure <NUM> (<FIG>) angularly relative to the first, fixed structure <NUM> (<FIG>). The lock ring <NUM> is also rotatable in the second position, which enables the inner race <NUM> to be translated relative to the housing <NUM> along the center axis C1. The movement of the inner race <NUM> along the center axis C1 enables the second, movable structure <NUM> to be spaced closer to or further apart from the first, fixed structure <NUM> as the inner race <NUM> is coupled to the outer race <NUM> and the outer race <NUM> translates with the inner race <NUM>. Once the adjustment of the second, movable structure <NUM> relative to the first, fixed structure <NUM> is complete, the lock ring <NUM> is released by the user, and the springs <NUM> expand, pulling the lock ring <NUM>, and thus, the lock teeth <NUM> into engagement with the housing teeth <NUM>. The springs <NUM> bias the lock ring <NUM> in the first position and bias the locking positioning system <NUM> in the first, locked state.

Thus, the locking positioning system <NUM> enables adjustment of the second, movable structure <NUM> in multiple degrees of freedom. In this regard, the attachment bolt <NUM> cooperates with the slot <NUM> of the housing <NUM> to enable adjustment of the second, movable structure along an X-axis. The threads <NUM> of the inner race <NUM> cooperates with the threads <NUM> of the housing <NUM> to enable adjustment of the second, movable structure along a Y-axis, which is parallel to the center axis C1. The angular rotation of the inner race <NUM> relative to the outer race <NUM> enables adjustment of the second, movable structure <NUM> in a yaw direction, rotating about the Y-axis. The rotation of the inner race <NUM> relative to the outer race <NUM> also enables adjustment of the second, movable structure <NUM> in a roll direction, rotating about the Z-axis. The rotation of the inner race <NUM> relative to the outer race <NUM> enables adjustment of the second, movable structure <NUM> in a pitch direction, rotating about the X-axis.

It should be noted that in other embodiments, the locking positioning system <NUM> may be configured differently to enable movement of the second, movable structure <NUM> relative to the first, fixed structure <NUM> in various degrees of freedom. For example, with reference to <FIG>, a locking positioning system <NUM> is shown. As the locking positioning system <NUM> includes components that are the same or similar to components of the locking positioning system <NUM> discussed with regard to <FIG> and the locking positioning system <NUM> discussed with regard to <FIG>, the same reference numerals will be used to denote the same or similar components. In this example, the locking positioning system <NUM> includes a bearing, such as a spherical bearing <NUM>, a lock ring <NUM>, a housing <NUM> (<FIG>), the attachment bolt <NUM>, and the plurality of lock assemblies <NUM> (<FIG>). The locking positioning system <NUM> is movable between the first, locked state and the second, unlocked state to enable the second, movable structure <NUM> (<FIG>) to be positioned in the desired orientation (rotation and translation) relative to the first, fixed structure <NUM> (<FIG>).

With reference to <FIG>, the spherical bearing <NUM> includes an inner race <NUM> and the outer race <NUM>. The spherical bearing <NUM> is composed of metal or metal alloy, and is cast, machined, forged, stamped, additively manufactured, etc. The inner race <NUM> is coupled to the inner bore <NUM> of the outer race <NUM>, and is movable relative to the outer race <NUM>. Generally, the inner race <NUM> rotates angularly within the inner bore <NUM> of the outer race <NUM> relative to the central axis CA1 of the outer race <NUM> (<FIG>), and also rotates about the central axis CA1. The central axis CA1 of the outer race <NUM> is substantially parallel and colinear with a center axis C2 of the locking positioning system <NUM>. The inner race <NUM> includes an inner race bore <NUM>, an outer surface <NUM> and at least one or a plurality of inner race attachment bores <NUM>. The inner race bore <NUM> is cylindrical and defines an inner perimeter or circumference of the inner race <NUM>. The inner race bore <NUM> also defines the plurality of threads <NUM>. The plurality of threads <NUM> cooperate with the plurality of threads <NUM> defined on the housing <NUM> to enable the housing <NUM> to move relative to the inner race <NUM>. A rotation of the inner race <NUM> causes a translation of the inner race <NUM> along the housing <NUM>, and thus, the outer race <NUM> coupled to the inner race <NUM>. The outer surface <NUM> defines the outer perimeter or circumference of the inner race <NUM>. The outer surface <NUM> is substantially smooth, and arcuate to enable the angular movement of the inner race <NUM> relative to the outer race <NUM>.

In this example, the inner race <NUM> defines twelve inner race attachment bores <NUM>. It should be noted that in other examples, the inner race <NUM> may be configured differently. Each of the inner race attachment bores <NUM> is cylindrical, and substantially smooth. In one example, with reference to <FIG>, each of the inner race attachment bores <NUM> includes a reduced diameter proximate the first side 320a of the inner race <NUM>. The first side 320a of the inner race <NUM> is opposite a second side 320b. The reduced diameter of each of the inner race attachment bores <NUM> defines the respective seat <NUM>.

The outer race <NUM> surrounds the inner race <NUM>. With reference back to <FIG>, the outer race <NUM> includes the inner bore <NUM>, the outer race surface <NUM>, the plurality of coupling bores <NUM> and the plurality of outer race slots <NUM>. The inner bore <NUM> receives the inner race <NUM> and cooperates with the outer surface <NUM> of the inner race <NUM> to enable the inner race <NUM> to move and articulate relative to the outer race <NUM>. The outer race surface <NUM> is discontinuous, or is interrupted by the slots <NUM>. The slots <NUM> are defined through the outer race surface <NUM> and are in communication with the outer race slots <NUM>. Each of the coupling bores <NUM> includes the threaded insert <NUM>, however, in other embodiments, the coupling bores <NUM> may include a plurality of internal threads. The threaded insert <NUM> includes the plurality of internal threads to receive the mechanical fastener, such as the bolt, to couple the outer race <NUM> to the second, movable structure <NUM> (<FIG>). The outer race slots <NUM> alternate with the coupling bores <NUM> about the circumference of the outer race <NUM>. The outer race slots <NUM> are in communication with the slots <NUM>.

The lock ring <NUM> is coupled to the housing <NUM>. The lock ring <NUM> is movable between a first position, in which the inner race <NUM> and the outer race <NUM> are held in a fixed position and the locking positioning system <NUM> is in first, locked state; and a second position, in which the inner race <NUM> is movable relative to the housing <NUM> to adjust a position of the second, movable structure <NUM> relative to the first, fixed structure <NUM> (<FIG>) and the locking positioning system <NUM> is in the second, unlocked state. The lock ring <NUM> is composed of metal or metal alloy, and is cast, machined, forged, stamped, additively manufactured, etc. The lock ring <NUM> includes a lock ring body <NUM>, lock ring bores <NUM> and the inner lock ring bore <NUM>.

The lock ring body <NUM> is cylindrical, and extends from a first ring end 350a to an opposite second ring end 350b. The lock ring body <NUM> defines the graspable surface <NUM> about an outer perimeter or circumference of the lock ring <NUM> to enable a user to manipulate the lock ring <NUM>. The lock ring bores <NUM> are defined through the lock ring body <NUM> from the first ring end 350a to the second ring end 350b (<FIG>). In this example, the lock ring <NUM> includes twelve lock ring bores <NUM>, however, the lock ring <NUM> may include any number of bores that comports with the number of lock assemblies <NUM>. In this example, each of the lock ring bores <NUM> include a respective locking insert <NUM>. The locking inserts <NUM> are internally threaded, and threadably engage with a plurality of threads defined on a mechanical fastener, such as the shoulder bolt <NUM> of a respective one of the lock assemblies <NUM> (<FIG>).

The inner lock ring bore <NUM> extends from the first ring end 350a to the second ring end 350b. The inner lock ring bore <NUM> is defined as a countersunk hole through the lock ring <NUM>. With reference to <FIG>, the inner lock ring bore <NUM> includes the plurality of lock teeth <NUM> defined about a perimeter or circumference of the inner lock ring bore <NUM> at the second ring end 350b. The tooth space <NUM> is defined between adjacent lock teeth <NUM>, and the tooth space <NUM> receives the respective tooth of the plurality of housing teeth <NUM> of the housing <NUM> when the lock ring <NUM> is in the first position and the locking positioning system <NUM> is in the first, locked state. Each of the housing teeth <NUM> is spaced apart from the respective tooth space <NUM> and the lock teeth <NUM> when the lock ring <NUM> is in the second position and the locking positioning system <NUM> is in the second, unlocked state.

The housing <NUM> defines the housing teeth <NUM> at a first housing end 314a and defines the slot <NUM> and an attachment flange <NUM> at a second housing end 314b, with the second housing end 314b opposite the first housing end 314a. The housing <NUM> is composed of metal or metal alloy, and is cast, machined, forged, stamped, additively manufactured, etc. With reference to <FIG>, the housing <NUM> is cylindrical, with an open perimeter at the first housing end 314a and a closed perimeter at the second housing end 314b. The housing <NUM> includes the plurality of threads <NUM> that extend from the first housing end 314a to the second housing end 314b and cooperate with the threads <NUM> of the inner race <NUM> to enable the inner race <NUM> to move relative to the housing <NUM> in the second position of the lock ring <NUM>. The housing teeth <NUM> extend axially from the first housing end 314a to engage with the lock ring <NUM>. The housing teeth <NUM> also define the stop <NUM> at the first housing end 114a to limit the further advancement of the inner race <NUM> relative to the housing <NUM>. The housing tooth space <NUM> defined between adjacent housing teeth <NUM> receives a respective one of the lock teeth <NUM> when the lock ring <NUM> is in the first position and the locking positioning system <NUM> is in the first, locked state (<FIG>). Each of the lock teeth <NUM> is spaced apart from the respective housing tooth space <NUM> and the housing teeth <NUM> when the lock ring <NUM> is in the second position and the locking positioning system <NUM> is in the second, unlocked state.

An interior surface of the housing <NUM> is substantially smooth. At the second housing end 314b, the slot <NUM> is defined to enable the attachment bolt <NUM> to pass through the housing <NUM> and into the first, fixed structure <NUM> (<FIG>). In this example, the slot <NUM> is elongated, and is defined along an axis that is substantially parallel to a housing central axis HCA1. The housing central axis HCA1 is substantially parallel and colinear with the central axis CA1 of the outer race <NUM> and the center axis C2 of the locking positioning system <NUM>. The slot <NUM> includes the plurality of slot serrations <NUM> defined about a perimeter of the slot <NUM> that cooperate with the serrated washer <NUM> to couple the attachment bolt <NUM> to the housing <NUM>.

With reference to <FIG>, the attachment flange <NUM> of the housing <NUM> extends radially outward from the housing <NUM> at the second housing end 314b. The attachment flange <NUM> is annular, and defines a plurality of housing bores <NUM>. In this example, with reference to <FIG>, the attachment flange <NUM> defines twelve housing bores <NUM>, one for each one of the shoulder bolts <NUM> associated with the lock assemblies <NUM>. Each of the housing bores <NUM> is coaxially aligned with a respective one of the inner race attachment bores <NUM> and lock ring bores <NUM> to receive the shoulder bolt <NUM> of the respective one of the lock assemblies <NUM> (<FIG>). Generally, once the locking positioning system <NUM> is assembled, each of the housing bores <NUM> surround the head 180a of the respective shoulder bolt <NUM> to guide a movement of the shoulder bolt <NUM> relative to the housing <NUM> during movement of the locking positioning system <NUM> between the first, locked state and the second, unlocked state.

With reference back to <FIG>, the attachment bolt <NUM> is coupled to the housing <NUM> via the serrated washer <NUM>. The serrated washer <NUM> includes the washer serrations <NUM> that engage with the slot serrations <NUM> to maintain the position of the attachment bolt <NUM> relative to the housing <NUM>. The head 116a of the attachment bolt <NUM> includes the tool coupling feature <NUM> for coupling the attachment bolt <NUM> to the tool. The shank 116b of the attachment bolt <NUM> is coupled to the first, fixed structure <NUM>. In one example, the shank 116b includes threads and the attachment bore 102a is threaded to enable the attachment bolt <NUM> to be threadably coupled to the first, fixed structure <NUM> (<FIG>).

With reference to <FIG>, in this example, the locking positioning system <NUM> includes twelve lock assemblies <NUM>. Each of the lock assemblies <NUM> includes the shoulder bolt <NUM> and the biasing member or spring <NUM>. The head 180a provides the second seat <NUM> for the spring <NUM>. The shank 180b includes the smooth portion <NUM> that extends from the head 180a to the threaded portion <NUM>. The threaded portion <NUM> includes the plurality of threads to engage with the internal threads of a respective one of the locking inserts <NUM>. Generally, with reference to <FIG>, when the threaded portion <NUM> is engaged with and coupled to the locking inserts <NUM>, the head 180a of the shoulder bolt <NUM> extends beyond the second side 320b of the inner race <NUM> and is surrounded by the respective housing bore <NUM>. By sizing the shank 180b such that the head 180a is external to the inner race <NUM>, additional travel of the shoulder bolt <NUM> is provided to ensure that the lock teeth <NUM> disengage with the housing teeth <NUM> in the second position of the lock ring <NUM>. The shoulder bolt <NUM> is inserted through a respective one of the inner race attachment bores <NUM> such that the spring <NUM> is received about the smooth portion <NUM> and retained within the respective inner race attachment bore <NUM> between the seat <NUM> and the second seat <NUM>. The spring <NUM> is compressible by the head 180a of the shoulder bolt <NUM> to enable the lock ring <NUM> to be spaced apart from the housing <NUM> in the second position. Once a force is removed from the lock ring <NUM>, the springs <NUM> expand, and engage the lock teeth <NUM> with the housing teeth <NUM> to return the lock ring <NUM> to the first position.

As the use and assembly of the locking positioning system <NUM> is similar or substantially the same as the use an assembly of the locking positioning system <NUM> and <NUM>, discussed with regard to <FIG>, the use and assembly of the locking positioning system <NUM> will be discussed briefly herein. Briefly, the inner race <NUM> is coupled to the outer race <NUM> so as to be movable relative to the outer race <NUM>. The threaded inserts <NUM> are coupled to the coupling bores <NUM> of the outer race <NUM>. The threads <NUM> of the housing <NUM> are engaged with the threads <NUM> of the inner race <NUM>. With the springs <NUM> positioned about the shoulder bolts <NUM>, the shoulder bolts <NUM> are inserted through the respective housing bores <NUM> and into the inner race attachment bores <NUM>. The locking inserts <NUM> are coupled to the lock ring <NUM>. The shoulder bolts <NUM> are engaged with the locking inserts <NUM> and the lock teeth <NUM> are engaged with the housing teeth <NUM>. With the lock teeth <NUM> engaged with the housing teeth <NUM>, the lock ring <NUM> is in the first position and the locking positioning system <NUM> is in the first, locked state.

In the first, locked state, the locking positioning system <NUM> is coupled to the second, movable structure <NUM> (<FIG>). Fasteners are inserted through the attachment holes <NUM> (<FIG>) and into the threaded inserts <NUM> to couple the locking positioning system <NUM> to the second, movable structure <NUM> (<FIG>). With the serrated washer <NUM> coupled about the head 116a of the attachment bolt <NUM>, the attachment bolt <NUM> is inserted through the slot <NUM> and translated along the slot serrations <NUM> of the slot <NUM> until the second, movable structure <NUM> is located at a lateral position relative to the first, fixed structure <NUM> (<FIG>). In the first position and first, locked state, the inner race <NUM> and the outer race <NUM> are each held in a fixed position, and thus, the position of the second, movable structure <NUM> relative to the first, fixed structure <NUM> (<FIG>) is fixed and inhibited from movement during operation of the vehicle, such as, during flight of the aircraft.

In order to adjust a rotational or angular position of the second, movable structure <NUM> relative to the first, fixed structure, the lock ring <NUM> is moved from the first position to the second position. In the second position and the second, unlocked state, the inner race <NUM> is movable relative to the housing <NUM> to adjust a position of the second, movable structure <NUM> relative to the first, fixed structure <NUM> (<FIG>). In order to move the lock ring <NUM> to the second position, with reference to <FIG>, the force F is applied along the center axis C2 of the locking positioning system <NUM> to move the lock ring <NUM> relative to the housing <NUM>. In one example, the force F is applied by a user gripping the lock ring <NUM> and pulling the lock ring <NUM> away from the housing <NUM>. As the lock ring <NUM> moves along the center axis C2, the shoulder bolts <NUM> translate within the inner race attachment bores <NUM> and compress the springs <NUM>. Once the lock ring <NUM> is moved such that the lock teeth <NUM> are spaced apart from the housing teeth <NUM>, the inner race <NUM> is rotatable by the movement of the lock ring <NUM>. In the second position, the lock ring <NUM> is manipulatable to move the second, movable structure <NUM> (<FIG>) angularly relative to the first, fixed structure <NUM> (<FIG>). The lock ring <NUM> is also rotatable in the second position, which enables the inner race <NUM> to be translated relative to the housing <NUM> along the center axis C2. The movement of the inner race <NUM> along the center axis C2 enables the second, movable structure <NUM> to be spaced closer to or further apart from the first, fixed structure <NUM> as the inner race <NUM> is coupled to the outer race <NUM> and the outer race <NUM> translates with the inner race <NUM>. Once the adjustment of the second, movable structure <NUM> relative to the first, fixed structure <NUM> is complete, the lock ring <NUM> is released by the user, and the springs <NUM> expand, pulling the lock ring <NUM>, and thus, the lock teeth <NUM> into engagement with the housing teeth <NUM>. The springs <NUM> bias the lock ring <NUM> in the first position and bias the locking positioning system <NUM> in the first, locked state.

Thus, the locking positioning system <NUM> enables adjustment of the second, movable structure <NUM> in multiple degrees of freedom. In this regard, the attachment bolt <NUM> cooperates with the slot <NUM> of the housing <NUM> to enable adjustment of the second, movable structure along an X-axis. The threads <NUM> of the inner race <NUM> cooperates with the threads <NUM> of the housing <NUM> to enable adjustment of the second, movable structure along a Y-axis, which is parallel to the center axis C. The angular rotation of the inner race <NUM> relative to the outer race <NUM> enables adjustment of the second, movable structure <NUM> in a yaw direction, rotating about the Y-axis. The rotation of the inner race <NUM> relative to the outer race <NUM> also enables adjustment of the second, movable structure <NUM> in a roll direction, rotating about the Z-axis. The rotation of the inner race <NUM> relative to the outer race <NUM> enables adjustment of the second, movable structure <NUM> in a pitch direction, rotating about the X-axis. In addition, the use of the twelve lock assemblies <NUM> ensure the locking positioning system <NUM> remains in the first, locked state when experiencing high torque. In this regard, in the first position, the lock teeth <NUM> and the housing teeth <NUM> are engaged while the heads 180a of the shoulder bolts <NUM> are also engaged in the housing bores <NUM> of the attachment flange <NUM>. This may be beneficial for an application in which an extremely high torque is expected on the outer race <NUM>.

Thus, the locking positioning system <NUM>, <NUM>, <NUM> couples the first, fixed structure <NUM> (<FIG>) to the second, movable structure <NUM>, but enables the second, movable structure <NUM> to be adjusted relative to the first, fixed structure <NUM> in various degrees of freedom. By enabling the adjustment of the second, movable structure <NUM> (<FIG>) in various degrees of freedom, misalignment between the first, fixed structure <NUM> and the second, movable structure <NUM> can be reduced or eliminated, which in the example of an aircraft, may reduce drag. In addition, by enabling the adjustment through the movement of the lock ring <NUM>, <NUM>, <NUM>, a user can adjust the second, movable structure <NUM> by hand and without the use of special tools. This enables adjustments to be made easily, and at various locations. Generally, the locking positioning system <NUM>, <NUM>, <NUM> enables adjustments between the second, movable structure <NUM> and the first, fixed structure <NUM> when tool access or visual access is difficult, limited, or substantially impossible.

Claim 1:
A locking positioning system, comprising:
a bearing (<NUM>, <NUM>, <NUM>) including an inner race (<NUM>, <NUM>, <NUM>) and an outer race (<NUM>, <NUM>, <NUM>), the outer race coupled to the inner race, the outer race to be coupled to a second structure (<NUM>);
a housing movably coupled to the inner race, the housing (<NUM>, <NUM>) to be coupled to a first structure (<NUM>); characterized by
a lock ring (<NUM>, <NUM>, <NUM>) coupled to the housing, the lock ring movable between a first position, in which the inner race is held in a fixed position, and a second position, in which the inner race is movable to adjust a position of the second structure relative to the first structure.