Ratcheting open jaw wrench

A ratcheting wrench includes a first jaw with a first jaw insert configured to move relative to the first jaw and a first spring configured to bias the first jaw insert in a first direction. The wrench also includes a second jaw with a second jaw insert configured to move relative to the second jaw and a second spring configured to bias the second jaw insert in a second direction opposite the first direction. When the first jaw insert moves relative to the first jaw and the second jaw insert moves relative to the second jaw, a space between the first jaw and the second jaw increases. This allows the jaws of the wrench to slip over corners of a fastener to achieve a ratcheting effect.

BACKGROUND

The disclosed embodiments relate to hand tools. More specifically, the disclosed embodiments relate to wrenches and adjustable wrenches having ratcheting features.

A wrench is a common tool widely used to tighten and loosen fasteners in a variety of applications. Some wrenches may be sold in sets with wrenches having jaws sized at various standard sizes. Other wrenches have adjustable jaws that allows the user to change the space between the jaws of the wrench to accommodate different sizes of fasteners using a single wrench.

Another common wrench is a socket wrench. Typically, this wrench may attach to several different sized sockets to drive a fastener. These wrenches often include a ratcheting feature that applies torque to the fastener when rotated in one direction and allow the wrench to rotate in a second opposite direction without transmitting torque to the fastener. This way, the socket does not need to be removed from the fastener while tightening or loosening the fastener.

When using such wrenches, it may sometimes be difficult to size the wrench while working in tight spaces. Further, it may be difficult to continually remove the wrench away from the fastener and find another appropriate angle relative to the fastener on which to again place the wrench onto the fastener. Further, some applications do not allow for the use of sockets due to protruding bolts or other size constraints. Thus, it would be desirable to have improved wrenches that are easily adjusted and that may provide ratcheting capabilities.

SUMMARY

Aspects of the present disclosure may be embodied as a device implemented as a laminated tool having a gearing mechanism. In some embodiments, the tool may have an elongated body comprising jaws and a handle. The jaws, in one example, include a fixed jaw and an adjustable jaw. The tool may include a worm gear coupled to the body so as to engage the adjustable jaw. The worm gear may be configured to drive the adjustable jaw toward the fixed jaw during rotation in a first direction. The tool may include a gearing mechanism coupled to the body so as to engage the worm gear via a belt. The gearing mechanism may be activated by actuation of a rocker arm. The gearing mechanism may be configured to rotate the worm gear in the first direction via the belt upon activation by compression of the rocker arm. As a result, during operation of the tool, compression of the rocker arm causes the adjustable jaw to move toward the fixed jaw.

According to other aspects of the disclosure, an adjustable, ratcheting wrench is provided comprising a fixed jaw comprising a fixed jaw insert slot and a first jaw insert. The first jaw insert includes a first flange that is disposed within the fixed jaw insert slot. The flange is configured to move within the fixed jaw insert slot. The first jaw insert also includes a first elongated hole formed in the first flange of the first jaw insert, and a first compression spring disposed in the first elongated hole.

The wrench further includes a first dowel disposed in the fixed jaw extending into the first elongated hole of the first flange. The first compression spring abuts against the first dowel to bias the first jaw insert in a first direction.

The wrench also includes an adjustable jaw having an adjustable jaw insert slot and a second jaw insert. The second jaw insert includes a second flange that is disposed within the adjustable jaw insert slot and is configured to move within the adjustable jaw insert slot. The second jaw insert further includes a second elongated hole formed in the second flange of the second jaw insert, and a second compression spring disposed in the second elongated hole.

The wrench also includes a second dowel disposed in the adjustable jaw extending into the second elongated hole of the second flange. The second compression spring abuts against the second dowel to bias the second jaw insert in a second direction opposite the first direction.

A handle portion is connected to the fixed jaw and the adjustable jaw. The handle portion includes a grip, a rocker arm extending from the grip, and a gearing mechanism. The gearing mechanism is disposed within the handle portion and is actuated by the rocker arm. The gearing mechanism is linked to the adjustable jaw to move the adjustable jaw towards the fixed jaw. The handle portion also has a push button configured to release the adjustable jaw from at least a portion of the gearing mechanism to allow the adjustable jaw to move away from the fixed jaw.

In some embodiments a third direction defines the movement of the adjustable jaw towards and away from the fixed jaw and the first and second direction are oblique relative to the third direction. When the fixed and adjustable jaws are in contact with a fastener and the handle portion is torqued in a first rotational direction, the first dowel and the second dowel prevent the first jaw insert and the second jaw insert from moving, thereby transferring torque to the fastener. When the fixed and adjustable jaws are in contact with the fastener and the handle portion is torqued in a second rotational direction opposite the first rotational direction, a reaction force from the fastener causes the first jaw insert and the second jaw insert to slide within the fixed jaw insert slot and the second jaw insert slot in the second direction and the first direction respectively, thereby allowing the fixed and adjustable jaws to slip over corners of the fasteners.

According to one embodiment, the adjustable jaw comprises teeth and the gearing mechanism comprises a worm gear configured to drive the adjustable jaw via the teeth. The worm gear is connected to a pinion gear via a belt, the pinion gear is driven by center gear connected to a one-way clutch, and the one-way clutch is driven by the actuation of the rocker arm.

The push button may be configured to release the center gear from the one-way clutch allowing a coil spring to drive the center gear. The adjustable jaw thus moves towards the fixed jaw when the center gear is connected to the one-way clutch, and the adjustable jaw moves away from the fixed jaw when the center gear is driven by the coil spring.

According to additional embodiments of the disclosure, a ratcheting wrench comprises a first jaw comprising a first jaw insert configured to move relative to the first jaw, and a first spring configured to bias the first jaw insert in a first direction. The wrench further comprises a second jaw comprising a second jaw insert configured to move relative to the second jaw, and a second spring configured to bias the second jaw insert in a second direction opposite the first direction. When the first jaw insert moves relative to the first jaw and the second jaw insert moves relative to the second jaw, a space between the first jaw and the second jaw increases.

In some embodiments, the first jaw is a fixed jaw, and the second jaw is an adjustable jaw that is configured to move towards and away from the fixed jaw. A worm gear may be configured to drive the adjustable jaw towards and away from the fixed jaw.

The wrench may include a handle portion connected to the first jaw and the second jaw. The handle portion comprises a grip, a rocker arm extending from the grip, and a gearing mechanism disposed within the handle portion. The gearing mechanism may be actuated by the rocker arm and may be linked to the second jaw to move the second jaw towards the first jaw. The handle portion may further comprise a push button configured to release the second jaw from at least a portion of the gearing mechanism to allow the second jaw to move away from the first jaw.

In some embodiments, the second jaw comprises teeth and the gearing mechanism comprises a worm gear configured to drive the second jaw via the teeth. The worm gear may be connected to a pinion gear via a belt, the pinion gear may be driven by center gear connected to a one-way clutch, and the one-way clutch may be driven by the actuation of the rocker arm.

In some embodiments, the push button releases the center gear from the one-way clutch allowing a coil spring to drive the center gear. The second jaw moves towards the first jaw when the center gear is driven by the one-way clutch, and the second jaw moves away from the first jaw when the center gear is driven by the coil spring.

According to other embodiments, the first jaw comprises a first jaw insert slot. The first jaw insert comprises a first flange, and the first flange is disposed within the first jaw insert slot. Similarly, the second jaw comprises a second jaw insert slot. The second jaw insert comprises a second flange, and the second flange is disposed within the second jaw insert slot.

The first flange comprises a first elongated hole formed in the first flange of the first jaw insert, and the first spring is a compression spring disposed within the first elongated hole. Likewise, the second flange comprises a second elongated hole formed in the second flange of the second jaw insert, and the second spring is a compression spring disposed within the second elongated hole.

A first dowel may be disposed in the first jaw extending into the first elongated hole of the first flange. The first spring abuts against the first dowel to bias the first jaw insert in the first direction. A second dowel may be disposed in the second jaw extending into the second elongated hole of the second flange. The second spring abuts against the second dowel to bias the second jaw insert in the second direction.

The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. In the figures, like reference numerals designate corresponding parts throughout the different views.

DETAILED DESCRIPTION OF EMBODIMENTS

The description of elements in each figure may refer to elements of one or more proceeding figures. Like numbers refer to like elements in the figures, including alternate embodiments of like elements.

FIGS. 1-6illustrate various views of a tool and various components thereof in accordance with embodiments of the present disclosure.

In particular,FIG. 1illustrates one embodiment of a tool100in accordance with embodiments of the present disclosure.FIG. 1provides a view of an outer appearance of the tool100. As shown inFIG. 1, the tool100may include or be referred to as an adjustable wrench having a body102configured with a clamping jaw configuration105. This configuration combines a fixed jaw104and an adjustable jaw106with rack-worm construction of an open-ended adjustable wrench with a set of torque transmission members that may be configured to convert an arc-swing movement of a rocker arm114into movement of the adjustable jaw, such as by rotational movement of a bevel gear which then drives a bevel pinion to transmit a hand torque onto a worm via a synchronous belt connection. This action is configured to move the adjustable jaw106toward the fixed jaw104to thereby provide a selectably adjustable jaw opening within a specified capacity. In this configuration, hand torque transmitted via the rocker arm114may reduce use of direct thumb movement of a worm gear as provided with traditional adjustable wrenches and may replace it with an ergonomic hand-squeezing motion of paddling the rocker arm114to close the jaws104,106or depressing a push button506to open the jaws104,106.

The worm or worm drive, as will be described below in greater detail, may be fully or at least partially concealed inside the body102of the tool100. The adjustable jaw movement may be controlled by the rocker arm114, and the push button506, which is preferably accessible at the exterior of the body102, such as being positioned at one side thereof and near a midpoint of the body102. Further, the entire handle or body may be wrapped by molded plastic, or stamped/forged metal, cover plates107and a side grip103to provide a comfortable grip around a periphery of the body102. In some implementations, the side grip103may include a molded plastic material or rubber material for comfort. In other embodiments, the side grip103is formed of a metal-based material, and may be overmolded with a polymer-based material.

In some implementations, the adjustable jaw106refers to a movable portion of the tool100that contacts a fastener (not shown), such as, e.g., a bolt head. The fixed jaw104refers to a stationary portion of the tool100that also contacts the fastener. The rocker arm or paddle114refers to a movable portion of the handle or body102that transmits hand torque into a drive mechanism (as described herein) constructed within the body102of the tool100. Further, the push button506button is configured to open the adjustable jaw106when the push button506is depressed or compressed. These and various other aspects of the disclosure are described in greater detail herein.

FIG. 2Aillustrates a schematic view of the tool100in accordance with embodiments of the present disclosure. As shown inFIG. 2A, the tool100may include the handle or body102(i.e., base, barrel, structure, chassis, frame, etc.), which may be formed with an elongated shape. In various implementations, the tool100may be referred to as a device or apparatus in the form of a tool having the body102contoured as an elongated handle of the tool100.

The body102may include the fixed jaw104and the adjustable jaw106. The tool100may include a worm drive or a worm gear108, rotatably coupled to the body102so as to engage the adjustable jaw106. The worm gear108may be configured to drive the adjustable jaw106toward the fixed jaw104during rotation in a first direction (i.e., first rotary direction). The tool100may include a gearing mechanism110coupled to the body102so as to engage the worm gear108via a belt112(e.g., a timing belt). The gearing mechanism110may be activated by compression of the rocker arm114(e.g., a paddle or articulating paddle). The gearing mechanism110may be configured to rotate the worm gear108in the first direction via the belt112upon activation by compression of the rocker arm114.

In reference toFIG. 2A, the fixed jaw104may be part of a head assembly118that is coupled to the body102via one or more fasteners or fastening members116, such as screw s, (e.g., sheet metal screws). In some implementations, the head assembly118, including the fixed jaw104, may be formed and/or integrated as part of the body102. The head assembly118may include a channel120configured to receive the adjustable jaw106. The adjustable jaw106may be coupled to body102via the channel120, which may be formed as part of the head assembly118. The adjustable jaw106may be configured to slidably engage the channel120so as to move toward the fixed jaw104by sliding along the channel120. The head assembly118may be referred to as an adjustable clamping mechanism, wherein the fixed jaw104may be referred to as a first clamping member, and the adjustable jaw may be referred to as a second clamping member that may be configured as an adjustable or movable member.

The worm gear108may be rotatably mounted within the head assembly118(head portion) of the body102proximate to the fixed jaw104. The worm gear108may be configured to rotate within the head assembly118of the body102upon activation of the gearing mechanism110by compression of the rocker arm114. The worm gear108may be configured to drive the adjustable jaw106toward the fixed jaw104during rotation by engaging one or more teeth306(as shown inFIG. 3) formed as part of the adjustable jaw106. The worm gear108may also be referred to as a clamping gear.

The gearing mechanism110may include a first gear or bevel pinion122that is rotatably coupled to the body102. The bevel pinion122may be configured to engage the worm gear108via the belt112. The bevel pinion122may be configured to rotate the worm gear108in the first direction via the belt112upon activation of the gearing mechanism110by compression of the rocker arm114. The gearing mechanism110may include a second gear or center bevel gear124rotatably coupled to the body102via a center shaft126. The center bevel gear124may be configured to engage the bevel pinion122, and the center bevel gear124may be configured to rotate the bevel pinion122upon activation of the gearing mechanism110by compression of the rocker arm114. The bevel pinion122may be referred to as a driving gear.

The gearing mechanism110may include a connecting rod128and crank link or plate127. The connecting rod128may be coupled to the crank plate127, and the crank plate127may be coupled to the center shaft126. In this instance, the connecting rod128may be coupled to the center bevel gear124via the crank plate127, and the connecting rod128may also be coupled to the rocker arm114. With this linkage, the connecting rod128may be configured to rotate the center bevel gear124upon activation of the gearing mechanism110by compression of the rocker arm114. Further, the rocker arm114may be coupled to the body102at a pivot point130, and as such, the rocker arm114may be configured to pivot (e.g., rock back and forth) about the pivot point130. As shown inFIG. 2A, one end132of the rocker arm114may be biased with a spring or paddle spring134that is coupled to the body102. The rocker arm114may be referred to as a paddle or articulating paddle. As a user activates the rocker arm114by, for example, squeezing the rocker arm114, the squeezing motion is transferred about the pivot point130to the connecting rod128. The connecting rod128, subsequently, moves in an opposite direction as the squeezing motion, and causes the crank plate127to rotate. As such, a substantially linear motion by the user (i.e., squeezing the rocker arm114) is translated into a circular motion by the crank plate127.

The gearing mechanism110may include a ratchet assembly136having a pawl138mounted to the body102. In this instance, the pawl138may be configured to couple with the center bevel gear124to allow rotary motion in only one direction while inhibiting motion in an opposite direction. The pawl138may be referred to as a pivoting finger that is configured to engage one or more teeth of the center bevel gear124. The pawl138may be coupled to the body102at a pivot point140, and as such, the pawl138may be configured to pivot about the pivot point140. Further, the pawl124may be biased with a spring (not shown) that is coupled to the body102.

In some implementations, the center bevel gear124may be formed as a round gear with multiple teeth, and the pawl138may be implemented as a pivoting, biased finger that is configured to engage the teeth of the center bevel gear124. Each tooth may include a gradual sloping edge on one side and a steep stepped on the other side. Alternatively, each tooth may be symmetrically formed with a profile on each edge that is substantially symmetric. When the center bevel gear124is rotating, and the teeth are moving in an unrestricted rotary direction, the pawl138may easily slide along the gradual sloping edge of each tooth. With a spring-loaded biasing, the pawl138may be forced over a tip of each tooth to the steep step of the other edge each tooth. When the center bevel gear124is rotating oppositely, and the teeth are moving in a restricted rotary direction, the pawl138catches against the steep stepped edge of each tooth, to thereby lock the pawl138against each tooth and inhibit any further motion in the restricted direction.

The gearing mechanism110may include a clock spring142coupled to the body102. The clock spring142may be configured to bias the center bevel gear124during unrestricted rotation in the first rotary direction upon activation of the gearing mechanism110by compression of the rocker arm114. In one implementation, the center bevel gear124may resemble a spool having an inner gear308and an outer gear310with a center ring312disposed therebetween, e.g., as shown inFIG. 3.

During unrestricted rotation of the center bevel gear124, the clock spring142may be configured to wind around the center ring312and bias the center bevel gear124. In this instance, the gearing mechanism110may include a release assembly406(shown inFIGS. 4A-4B) having a push button506(as shown inFIGS. 5A-5B) mounted to the body102. In one implementation, the push button506may be configured to engage the pawl138so that upon compression of the push button506, the pawl138releases from contact with the center bevel gear124and allows the center bevel gear124to freely rotate in the opposite direction, i.e., restricted direction. In this instance, the adjustable jaw106is configured to move in a second direction opposite the first direction (i.e., the restricted direction) and return to a default open position upon release of the pawl138from contact with the center bevel gear124.

In another implementation, the push button506may be further configured to engage the center shaft124that is coupled to the center bevel gear124via connecting plate408, so that upon compression of the push button506, the center shaft126releases from contact with the center bevel gear124and allows the center bevel gear124to rotate in the opposite direction (i.e., the restricted direction). In this instance, the adjustable jaw106is configured to move in the second direction opposite the first direction and return to the default open position upon release of the center shaft126from contact with the center bevel gear124. These and other aspects are described further herein.

FIG. 2Billustrates another embodiment of the tool100in accordance with embodiments of the present disclosure. As shown inFIG. 2B, the tool110may include a button biasing spring206that may be configured to bias the push button506(as shown in FIGS. SA-SB) in an outward direction away from the body102. In one implementation, biasing the push button506outwardly from the body102with the button biasing spring206may allow for active compression of the push button506.

FIG. 3illustrates another embodiment of the tool100in accordance with embodiments of the present disclosure. As shown inFIG. 3, the tool110may be formed as a laminated tool where the body102is formed with multiple layers302A,302B,302C,302D and components thereof, including the head assembly118with the fixed jaw104and the gearing mechanism110with the adjustable jaw106. The multiple layers302A,302B,302C,302D may be coupled with fasteners or fastening members116,316, such as screws, such as, e.g., sheet metal screws. Further, a spacer336may be provided between layers302B and302C.

In some embodiments, the various components of the body including the head assembly118and layers302A,302B,302C,302D may comprise a metal-based material, such as, e.g., aluminum, steel, stainless steel, and/or any other type of metal material, including high-strength metals and various alloys of multiple different high-strength metals. In other embodiments, the body102and components thereof may comprise a high-strength, rigid polymer-based material. Further, portions of the body102and components thereof may comprise a coating of flexible and shock-absorbing type of polymer-based material, such as, e.g., an isoprene type polymer-based material, including polymer based rubber or any other type of flexible and shock-absorbing polymer-rubber based material.

In some embodiments, the coating may comprise thermos plastic rubber (TPR) or any other type of similar or comparable material, including, e.g., various polymer blends. For instance, various polymers blends may include some combination of one or more of polypropylene (PP), polyethylene (PE), block copolymer polypropylene (BCPP), rubber, and reinforcing filler(s). In some other embodiments, the materials used for forming, fabricating, and/or manufacturing the body102and components thereof may provide for strength, rigidity, and shock-absorbing characteristics to thereby improve reliability and longevity of the tool100.

Further, in reference toFIG. 3, the gearing mechanism110may include a clutch314that may be configured as a one-way clutch to assist with allowing rotary motion of the center bevel gear124in the only one direction while inhibiting motion in the opposite direction. As shown inFIG. 3, the clutch314may include one or more grooves318that are configured to couple and/or engage with one or more corresponding crank pawls420of the crank plate127(as shown inFIGS. 4A-4B). This configuration allows the clutch314to couple with the center bevel gear124, and with a one-way clutch effect, the clutch314only allows rotary motion in one direction while inhibiting motion in the opposite direction. Further, in some implementations, the push button506(as shown inFIG. 5) may be configured to disengage the clutch314via compression or movement of the center shaft126. In this instance, the center shaft126may have a tapered contour so that, when compressed or moved, the center shaft126is moved along the tapered contour to release the clutch314. This allows the biasing effect of the clock spring142to retract to thereby allow the adjustable jaw106to automatically return to the default open position.

As shown inFIG. 3, the head assembly118may include a spool recess or tray330that is configured to receive the center bevel gear124therein. In some implementations, the spool recess330may include a button aperture332formed therein that is configured to allow the center shaft126to pass through layer302C and contact the button biasing spring206(as shown inFIG. 2B), which biases the push button506(as shown inFIGS. 5A-5B).

FIGS. 4A-4Billustrate various views of the head assembly118of the tool100in accordance with embodiments of the present disclosure. In particular,FIG. 4Ashows a cut-away view of the release assembly406including the rocker arm114, the center bevel shaft124, and the clutch314.FIG. 4Bshows another view of the release assembly406including the rocker arm114, the center bevel shaft124, and the clutch314.

As shown inFIGS. 4A-4B, the gearing mechanism110may include the connecting plate408, which is coupled to the center shaft126(having a tapered section426) and a pawl release pin410(having a tapered section412). In one implementation, upon compression of the push button506(as shown inFIG. 5), the compressive force applied to the push button506may be transferred to the pawl release pin410via the connecting plate408and the center shaft126. This compressive force of the push button506may allow the tapered portion412of the pawl release pin to slide along the pawl138to thereby release tension on pawl138from contact with the teeth of the center bevel gear124. Further, in some implementations, upon compression of the push button506, this configuration allows the center shaft126to simultaneously release from contact with the center bevel gear124and allow the center bevel gear124to rotate in the opposite direction (i.e., restricted direction). In this instance, the adjustable jaw106is configured to move in the second direction opposite the first direction and return to the default open position upon release of the center shaft126from contact with the center bevel gear124.

Further, as shown inFIGS. 4A-4B, the gearing mechanism110may include the crank plate or link127, which may be coupled to the center shaft126and the connecting rod128. As described herein, the crank plate127may include the one or more crank pawls420that may be configured to couple and/or engage with the one or more corresponding grooves318formed on the exterior periphery of the clutch314. This configuration may allow the clutch314to couple with the center bevel gear124, and with a one-way clutch effect, the clutch314may only allow rotary motion in one direction while inhibiting motion in the opposite direction.

Further, in some implementations, the push button506(as shown inFIGS. 5A-5B) may be configured to disengage the clutch314via compression or movement of the center shaft126. In this instance, the center shaft126may have the tapered contour portion426so that, when compressed or moved, the center shaft126is moved along the tapered contour portion426to release the grooves318of the clutch314from the crank pawls420of the crank plate127. In some implementations, this configuration may allow the biasing effect of the clock spring142to retract and unwind from the center ring312of the center bevel gear124to thereby allow the adjustable jaw106to automatically return or retract to the default open position.

FIGS. 5A-5Billustrate various views of the tool100in accordance with embodiments of the present disclosure. In particular, as shown inFIGS. 5A-5B, the tool100may be formed as a laminated tool having the body102with the multiple layers302A,302B,302C,302D and components thereof, including the head assembly118with the fixed jaw104and the gearing mechanism110.

As previously described herein, the gearing mechanism110may include the release assembly406having the push button506mounted to the body102. The push button506may be configured to engage the pawl138so that, upon compression of the push button506, the pawl138is configured to release from contact with the center bevel gear124thus allowing the center bevel gear124to rotate in the opposite direction (i.e., restricted direction). Further, the push button506may be configured to engage the center shaft126that is coupled to the center bevel gear124, so that upon compression of the push button506, the center shaft126releases from contact with the center bevel gear124thus further allowing the center bevel gear124to rotate in the opposite direction (i.e., the restricted direction). As a result, the adjustable jaw106may be configured to move in the second direction (i.e., restricted direction) opposite the first direction (i.e., unrestricted direction) and return to the default open position upon release of the center shaft126from contact with the center bevel gear124.

FIG. 6illustrates another embodiment of the tool100in accordance with embodiments of the present disclosure. As shown inFIG. 6, the tool110may include the belt or timing belt112. In one implementation, the belt112may include teeth606that are configured to couple and engage to corresponding teeth (not shown) of the worm drive108and further couple and engage with corresponding teeth608of the bevel pinion122.

As previously described herein, the gearing mechanism110may be coupled to the body102so as to engage the worm gear108via the belt112, and the gearing mechanism110may be activated, e.g., by compression of the rocker arm114. Further, the gearing mechanism110may be configured to rotate the worm gear108in the first direction via the belt112upon activation of the gearing mechanism110by compression of the rocker arm114. The configuration of the engagement of the teeth606of the belt112to both the teeth (not shown) of the worm drive108and the teeth608of the bevel pinion112allows the compressive driving force to be transferred between the rocker arm114and the center bevel gear124to thereby move the adjustable jaw106toward the fixed jaw104upon activation of the gearing mechanism110by compression of the rocker arm114.

In various implementations, the belt112may be formed of a flexible, high strength polymer, such as, e.g., a polymer-based rubber or any other type of flexible, high strength polymer-rubber based material. In some embodiments, the belt112may comprise any suitable material that is flexible and stretch resistant. In some instances, the belt112may include radial metal fibers, such as, e.g., steel reinforcing fibers, strands, wires, etc., encapsulated within flexible, high-strength polymer-rubber based material so as to provide additional strength while maintaining flexibility. In other implementations, the materials used for forming, fabricating, and/or manufacturing the belt112may provide for flexibility and high-strength characteristics to thereby improve reliability and longevity of the tool100.

FIGS. 7-9illustrate process flow diagrams of methods for manufacturing the tool100in accordance with embodiments of the disclosure.

In particular,FIG. 7illustrates a process flow diagram for a method700of manufacturing the tool100in accordance with implementations described herein. It should be understood that while method700indicates a particular order of execution of operations, in some examples, certain portions of the operations might be executed in a different order, and on different systems. In some other examples, one or more additional operations and/or steps may be added to method700. Similarly, some operations and/or steps may be omitted. Further, in reference to method700ofFIG. 7, steps710-730are described with reference toFIGS. 1-6.

At block710, method700may fabricate a body having a fixed jaw and an adjustable jaw. In some embodiments, the body may be formed or integrated as part of a device, apparatus, or tool, and the body may be contoured as an elongated handle of the device, apparatus, or tool.

At block720, method700may fabricate a worm gear coupled to the body and the adjustable jaw. In various embodiments, the worm gear may be configured to drive the adjustable jaw toward the fixed jaw during rotation in a first direction.

At block730, method700may fabricate a gearing mechanism coupled to the body so as to engage the worm drive via a belt and activated by compression of a rocker arm. In various embodiments, the gearing mechanism may be configured to rotate the worm gear in the first direction via the belt upon activation by compression of the rocker arm. In this instance, the worm gear may be configured to rotate within the body upon activation of the gearing mechanism by compression of the rocker arm.

FIG. 8illustrates a process flow diagram for a method800of manufacturing the tool100in accordance with implementations described herein. It should be understood that while method800indicates a particular order of execution of operations, in some examples, certain portions of the operations might be executed in a different order, and on different systems. In some other examples, one or more additional operations and/or steps may be added to method800. Similarly, some operations and/or steps may be omitted.

Further, in reference to method800ofFIG. 8, steps810-830are described with reference toFIGS. 1-6.

At block810, method800may provide an elongated body having an adjustable clamping mechanism with a fixed member and a movable member. In some embodiments, the elongated body may be formed or integrated as part of a device, apparatus, or tool, and the elongated body may be contoured as an elongated handle of the device, apparatus, or tool.

At block820, method800may provide a gear assembly coupled to the body. In some implementations, providing the gear assembly may include providing a clamping gear coupled to the movable member. The clamping gear may be configured to drive the movable member toward the fixed member during rotation in a first direction.

At block830, method800may provide a driving gear coupled to the clamping gear via a belt. In some implementations, providing the gear assembly may include providing the driving gear coupled to the clamping gear via a belt. The driving gear may be configured to rotate the clamping gear in the first direction via the belt.

At block840, method800may provide a gearing mechanism coupled to the driving gear and an articulating paddle. In some implementations, providing the gear assembly may include providing the gearing mechanism coupled to the driving gear and an articulating paddle. The gearing mechanism may be configured to rotate the driving gear when activated by compression of the articulating paddle.

FIG. 9illustrates a process flow diagram for a method900of manufacturing the tool100in accordance with implementations described herein. It should be understood that while method900indicates a particular order of execution of operations, in some examples, certain portions of the operations might be executed in a different order, and on different systems. In some other examples, one or more additional operations and/or steps may be added to method900. Similarly, some operations and/or steps may be omitted.

Further, in reference to method900ofFIG. 9, steps910-930are described with reference toFIGS. 1-6.

At block910, method900may provide a handle. In some embodiments, the handle may be formed or integrated as part of a device, apparatus, or tool, and the handle may be contoured as an elongated body of the device, apparatus, or tool.

At block920, method900may provide a head assembly coupled to the handle. In some embodiments, the head assembly includes a first clamping member and a second clamping member. Further, the head assembly may include a worm gear rotatably coupled thereto so as to engage and drive the second clamping member toward the first clamping member during rotation of the worm drive.

At block930, method900may provide a gearing mechanism coupled to the head assembly and the worm gear via a belt. In some embodiments, the gearing mechanism is activated by compression of a paddle, and the gearing mechanism may be configured to rotate the worm gear via the belt upon activation by compression of the paddle.

At block940, method900may provide a ratcheting mechanism coupled to the head assembly and the gearing mechanism. In some embodiments, the ratcheting mechanism may be configured to couple with the gearing mechanism to thus allow rotary motion in a first direction while inhibiting motion in a second direction that is opposite the first direction.

FIG. 10is a side view diagram illustrating one embodiment of a tool1000with a drive mechanism for a hand tool. As used herein, the phrase “drive mechanism” refers to a combination of components that include a drive shaft. In the depicted embodiment, the drive mechanism1002includes various components, some of which have been described above, for transferring a user-supplied force from a rocker lever1004to a moveable jaw1006. The drive mechanism1002, in one embodiment, transfers a rocking, or oscillating, movement (such as applied to the rocker lever1004) into a linear movement of the moveable jaw1006.

The rocker lever1004pivots about pivot point1010and is biased by spring1008. The default position of the rocker lever1004is, as depicted, extended away from the hand tool frame1012. When a user pushes on one end of the rocker lever1004, as illustrated by arrow1014, the other end of the rocker lever extends out of the frame (arrow1016) and pulls a linkage arm1018. As will be discussed in greater detail below, the linkage arm1018is coupled to a drive shaft via a one-way bearing or clutch. The drive shaft turns a center ring that is coupled to a pinion gear. The pinion gear drives a belt, which as is described above, turns a worm gear that advances the moveable jaw1006.

As discussed above with reference toFIGS. 1-9, the hand tool1000may be a laminated hand tool. Stated differently, the hand tool1000may be formed having multiple sheets of material that form the frame or exterior of the hand tool1000. In the depicted embodiment, different components of the drive mechanism1002may be mounted on one or both base plates1020. For example, a one-way bearing mount1022may be coupled with one of the base plates1020.

FIG. 11is an exploded view diagram illustrating one embodiment of the drive mechanism1002, andFIG. 12is a schematic view illustrating an embodiment of the drive mechanism1001, in accordance with embodiments of the present disclosure. In the depicted embodiment, the components of the drive mechanism1002are generally positioned concentrically with a longitudinal axis of the drive or center shaft1102. In other words, the other components of the drive mechanism1002are coupled to or engage the center shaft1102in a manner that the center shaft1102extends through the center of the components.

In one embodiment, the center shaft1102couples with a base plate1104. A lock ring1106couples with the base of the center shaft1102and maintains the position of the center shaft1102with respect to the base plate1104. In one embodiment, the lock ring1106prevents the center shaft1102from traveling “upward” (i.e., “upward” used as reference toFIG. 11) towards a button1108. However, the lock ring1106is configured to allow the center shaft1102to move in an opposite direction towards a spring holder1110. As will be described in greater detail below, a user may push on the button1108which in turn causes the center shaft1102to move towards the spring holder1110and thereby disengage the center shaft1102from the one-way bearings. Spring1112biases the center shaft1102and urges the center shaft1102away from the spring holder1110. In other words, in one embodiment, the center shaft1102is in a default position of engagement with the one-way bearings, and transitions to a position of disengagement when the button1108is pressed.

The base plate1104is disposed between the lock ring1106and a center gear1114. The center shaft1102may be formed with flat areas1117for engaging a corresponding area of the center gear1114. As such, a rotation of the center shaft1102is transferred to the center gear1114, and the coil spring1116. In an alternative embodiment, when the center shaft1102is pressed downward, and out of engagement with the one-way bearings and center gear1114, the center gear1114may rotate freely with reference to the center shaft1102. In this situation, and because the center gear1114may be coupled with the coil spring1116, the coil spring1116exerts a force on the center gear1114as the coil spring1116unwinds. This causes the center gear1114to return to a “home” or default position. As will be described below, the center gear1114causes the moveable jaw to move, and accordingly, when the coil spring1116unwinds, the moveable jaw opens.

In the depicted embodiment, the center shaft1102has a graduated profile. In other words, the center shaft1102has a greater diameter near the base than near the tip. This helps with alignment of the center shaft1102as it moves in and out of engagement with the one-way bearings and the center gear1114.

A first one-way bearing1118or clutch may be disposed within a crank arm1120. The crank arm1120is coupled with the linkage arm1018that is coupled with the rocker lever1004depicted inFIG. 10. In operation, the crank arm1120pivots back and forth as the rocker lever1004rocks about the rocker pivot point1010(depicted inFIG. 10). This pivoting motion, in one embodiment, does not encompass a full 360 degree rotation, but instead encompasses movement in the range of between about 5 and 50 degrees. The one-way bearing1118transfers the crank arm1120movement from the linkage arm1018to the center shaft1102.

The one-way bearing1118is formed having an inner and an outer surface, also known as inner race and outer race. By definition, a one-way bearing allows the inner race and the outer race to move in only a single direction, with respect to each other. In other words, both surfaces may move together in a clockwise direction, but not in separate directions. If one of the surfaces is fixed, the other surface may still rotate in a single direction. Accordingly, the rocking, or back and forth, movement of the crank arm1120causes the center shaft1102to advance in a single direction. As the crank arm1120moves forward (i.e., in a clockwise direction) so does the center shaft1102. However, as the crank arm1120retreats (i.e., in a counter-clockwise direction) the inner race of the one-way bearing1118spins freely and does not drive the center shaft1102. The second one-way bearing1122prevents the center shaft1102from retreating with the crank arm1120. The one-way bearings1118,1120, in one embodiment are arranged to only allow movement of the center shaft1102in a single direction (i.e., either clockwise or counter-clockwise). This is achieved by fixing the outer surface of the one way bearing1122with reference to the base plate1020. A clutch mount1022that is coupled with the base plate1020may fixedly couple the outer race of the one-way bearing1122. In other words the outer race of the one way bearing1122is rotationally fixed, it does not rotate.

As described above, the push button is in engagement with the center shaft such that a pushing force on the push button causes the center shaft to compress the compression spring and move the center shaft towards the coil spring holder. This movement causes the graduated center shaft to disengage from both one-way bearings (i.e., 1-way roller clutch). Once the center shaft is disengaged from the one-way bearings, and potential energy stored in the coil spring causes the coil spring to relax (i.e., unravel) and also rotate the center gear. As a result, the center gear turns the pinion gear.

In another embodiment, a modified tool head is provided that achieves a “ratcheting” effect during use.FIG. 13illustrates a tool1300that has a tool body1012and rocker arm1004similar to those described above. The tool1300has gearing (not shown) similar to the tools1002,100described above and a description will not be repeated hear. Thus, similar to tools1002,100, an adjustable jaw1306may be moved towards a fixed jaw1304by manipulation of the rocker arm1004via the gearing mechanism. The adjustable jaw1306may return to an open position by pressing a push button1108, as described above.

The fixed jaw1304comprises a first jaw insert1308. The first jaw insert1308may comprise teeth1309or other interfacing surface to interface with a work piece such as a polygonal bolt head. Similarly, the adjustable jaw1306comprises a second jaw insert1310. The second jaw insert1310may comprise teeth1310or other interfacing surface to interface with a work piece such as a polygonal bolt head.

FIG. 14shows a cut-away, schematic view of the tool1300. InFIG. 14, the second jaw insert1310of the adjustable jaw1306comprises a flange1412that is housed at least partially within and can slide within a slot1414of the adjustable jaw1306. The flange1412comprises an elongated aperture1416, recess or the like that houses a compression spring1418. A dowel1420, or a pin or other stop, is provided that extends through both the adjustable jaw1306and the elongated aperture1416. The dowel1420prevents the second jaw insert1310from sliding towards the tool body1012. The dowel1420interacts with the compression spring1418to bias the second jaw insert1310towards the tool body1012while allowing movement away from the tool body1012when a sufficient force acts on the jaw insert1310.

Similarly, the first jaw insert1308of the fixed jaw1304comprises a flange1422that is housed at least partially within and can slide within a slot (not shown) of the fixed jaw1304. The flange1422comprises an elongated aperture1424, recess or the like that houses a compression spring1426. A dowel1428, pin or other stop is provided that extends through both the fixed jaw1304and the elongated aperture1424. The dowel1428prevents the first jaw insert1308from sliding away from the tool body1012. The dowel1428interacts with the compression spring1426to bias the first jaw insert1308away from the tool body1012while allowing movement towards the tool body1012when a sufficient force acts on the first jaw insert1308. Additionally, a lateral compression spring1430is provided to balance the first jaw insert1308during use. The later spring1430provides stability to the jaw insert1308so that the jaw insert moves smoothly along the intended direction of travel of the jaw insert1308.

The “ratcheting” mechanism of the tool1300is described with reference toFIG. 15. The tool1300may be used to tighten a fastener1502. Here, the fastener1502is shown as having a hexagonal head. When the tool1300is torqued by a user in a first direction shown as arrow T1, the first and second jaw inserts1308,1310of the fixed jaw1304and adjustable jaw1306remain in their initial positions P1as biased by the compression springs1418,1426. This is because when the tool1300is torqued in the direction T1, the jaw insert1308of the fixed jaw1304experiences a reaction force opposite F1away from the tool body1012. The dowel1428and flange1422prohibit movement of the first jaw insert1308in this direction, and thus the jaw insert1308remains fixed and transfers the torque T1to the fastener1502. Similarly, when the tool1300is torqued in the direction T1, the second jaw insert1310of the adjustable jaw1306experiences a reaction force opposite F2towards the tool body1012. The dowel1420and flange1412within the slot1414prohibit movement of the second jaw insert1310in this direction, and thus the second jaw insert1310remains fixed and transfers the torque T1to the fastener1502.

Alternatively, when the tool1300is torqued by a user in a second direction shown as arrow T2, the first and second jaw inserts1308,1310of the fixed jaw1304and adjustable jaw1306slide within respective slots and relative to the fixed jaw1304and adjustable jaw1306to a position P2, allowing the fixed and adjustable jaws1304,1306to slip over the fastener1502. In this manner, the tool1300can operate in a “ratcheting” fashion where the tool1300tightens a fastener in a single direction without adjusting (e.g. opening) the adjustable jaw1306or removing the tool1300from the fastener1502.

Specifically, when the tool1300is torqued in direction T2, the first jaw insert1308of the fixed jaw1304experiences a reaction force of F1towards the tool body1012. When F1exceeds the force of the compression spring1426, the first jaw insert1308slides within the slot towards the tool body1012from position P1towards position P2. As the tool is turned, the first jaw insert1308continues to move. The angle at which the first jaw insert1308moves is oblique relative to the plane of the teeth1309or interaction surface of the fixed jaw insert1308as shown by angle α. Thus, as the first jaw insert1308moves towards the tool body1012to position P2, the space between the fixed jaw1304and the adjustable jaw1306increases.

Similarly, when the tool1300is torqued in the direction T2, the second jaw insert1310of the adjustable jaw1306experiences a reaction force of F2away from the tool body1012. When F2exceeds the force of the compression spring1418, the second jaw insert1310slides within the slot1414away from the tool body1012from position P1towards position P2. As the tool is turned, the second jaw insert1310continues to move. The angle at which the second jaw insert1310moves is oblique relative to the plane of the teeth1311the adjustable jaw insert1310as shown by angle α. Thus, as the second jaw insert1310moves away from the tool body1012, the space between the fixed jaw1304and the adjustable jaw increases.

When the space between the fixed jaw1304and the adjustable jaw1306is sufficient, the jaws1304,1306slip over the fastener1502. That is, the space created by the movement of the first and second jaw inserts1308,1310allows the jaws1304,1306to clear the corners of the head of the fastener1502(e.g. corners of the hexagonal head) and advance to the next sides of the head of the fastener1502(e.g. sides of the hexagonal head). When the jaws1304,1306clear the corners, the compression springs1418,1426push the first and second jaw inserts1308,1310back to their original positions (e.g. back to position P1from position P2). Thus, where the adjustable jaw1306is sized to fit around sides of the fastener1502, the space between the jaws1304,1306will return back to the original spacing to achieve the same fit. This movement and slipping feature of the first and second jaw inserts1308,1310allows a user to operate the tool in a “ratcheting” manner.

In particular, as illustrated inFIG. 15, because the first jaw insert1308is moving upwardly as it moves rearwardly (moving along the slot in the fixed jaw1306, where that slot extends at an angle relative to the top of the fastener1502), the distance between the first jaw insert1308and the second jaw insert1310at the location of the fastener1502increases, thus increasing the space between the fixed jaw1304and the adjustable jaw1306. Likewise, because the second jaw insert1310is moving downwardly as it moves forward (moving along the slot1416in the adjustable jaw1306, where that slot extends at an angle relative to the bottom of the fastener1502), the distance between the second jaw insert1310and the first jaw insert1308at the location of the fastener1502increases. Ultimately, the distance between the first and second jaw inserts1308,1310becomes sufficiently large at the location of the fastener1502that they can clear the corners of the sides of the fastener1502as the tool is rotated relative to the fastener1502.

In the above-described configuration, the change in distance between the jaws1304,1306is achieved by generally lateral movement of the first and second jaw inserts1308,1310relative to the jaws (e.g. movement generally along the slots). It will be appreciated that the change in distance between the jaws at the location of the fastener may be achieved by having the first and second jaw inserts1308,1310move along sloping slots and/or by the jaw inserts having a depth (from the teeth to the jaw to which it is mounted) which changes along the length of the jaw insert (whereby the “slope” of the jaw inserts themselves allows the distance between the jaws to change relative to one another at the location of the fastener). It is also possible for at least a portion of the change in distance between the jaws1304,1306to result from movement of the first and second jaw inserts1308,1310in and out relative to the jaws and fastener.

Of course, the tool1300might be used with fasteners other than 6-sided or hexagonal fasteners, such as four sided or square fasteners, eight sided or octagonal fasteners or the like.

In one embodiment, compression springs1426,1418are used to bias the first and second jaw inserts1308,1310. Other means for biasing might be used, including resilient polymer inserts, other types of springs and the like. In some embodiments, the means for biasing might be positioned between a portion of the jaw insert1308,1310and its respective jaw1304,1306, rather than in a recess or aperture in the jaw insert1308,1310.

Likewise, instead of a dowel or pin1420,1428, other types of stops might be provided for limiting the travel of the first and second jaw inserts1308,1310. Such stops might comprise, for example, flanges or the like which extend outwardly of the jaw inserts1308,1310for contact with portions of the fixed and adjustable jaws1304,1306.

It is also possible for the first and second jaw inserts1308,1310to be mounted for movement relative to the first and adjustable jaws1304,1306in other manners. For example, instead of moving along slots, the jaw inserts1308,1310might define slots that accept extensions of the fixed and adjustable jaws1304,1306or the first and second jaw inserts1308,1310might travel along slides, on a track, along a rail or the like.

As described, the tool1300includes a ratcheting-type mechanism which allows a user to apply a force to tighten a fastener when rotating the tool1300in a first direction (such as clockwise), but which allows the user to reposition the tool1300relative to the fastener without manually adjusting or changing a position of the jaws thereof, by simply rotating the tool1300in a reverse (counter-clockwise) direction. Of course, the tool1300might be configured so that the ratcheting-type mechanism is reversed, thus allowing a user to apply a force to loosen a fastener when rotating the tool1300in a first direction (such as counter-clockwise), but which allows the user to reposition the tool1300relative to the fastener without manually adjusting or changing a position of the jaws thereof, by simply rotating the tool1300in a reverse (clockwise) direction.

It is noted that in embodiments of the invention described herein the fixed jaw is described and illustrated as being located at a top of the tool head and the adjustable jaw is described and illustrated as being located at a bottom of the tool head. It will be appreciated that the positions of the fixed jaw and the adjustable jaw might be reversed.

In a preferred embodiment of the invention the ratcheting-type mechanism has been described relative to a tool which includes an adjustable wrench which includes a “squeeze” type jaw drive mechanism. The ratcheting-type mechanism might be applied to other types of tools which do not have such a mechanism, however, such as traditional adjustable wrenches (where the user moves the adjustable jaw by manual manipulation of a worm gear or the like), or other types of wrenches having open jaws, such as tongue and groove pliers (such as those marketed under the name Channellock), open end wrenches or the like.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many other embodiments may become apparent to those of skill in the art upon reading and understanding the above description. Although the present disclosure has been described with reference to specific embodiments, it should be recognized that the present disclosure is not limited to the embodiments described, but may be practiced with modification and/or alteration within the scope of the appended claims. Accordingly, the specification and drawings should be regarded in an illustrative sense rather than a restrictive sense. Moreover, the scope of the present disclosure should, thus, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.