Power tool drive mechanism

A cantilevered flywheel for a motor having an inner rotor. A power tool having an electric motor which drives a cantilevered flywheel. A fastening device having a driver blade and/or driver profile which has a driving action energized by a transfer of energy from contact with a cantilevered flywheel. Methods of using a cantilevered flywheel in power tools and appliances.

FIELD OF THE INVENTION

The present invention relates to a power tool drive mechanism.

BACKGROUND OF THE INVENTION

Fastening tools, such as nailers, are used in the construction trades. However, many fastening tools which are available are insufficient in design, expensive to manufacture, heavy, not energy efficient, lack power, have dimensions which are inconveniently large and cause operators difficulties when in use. Further, many available fastening tools do not adequately guard the moving parts of a nailer driving mechanism from damage.

Many fastening tools which are available are inconveniently bulky and have systems for driving a fastener which have dimensions that require the fastening tool to be larger than desired. For example, drive systems having a motor which turns a rotor can require clutches, transmissions, control systems and kinetic parts which increase stack up and limit the ability of a power tool to be reduced in size while retaining sufficient power to achieve a desired performance.

There is a strong need for a fastening tool having an improved motor and drive mechanism.

SUMMARY OF THE INVENTION

In an embodiment, a power tool can have an electric motor having a rotor which has a rotor shaft. The rotor shaft can be coupled to a flywheel which can have a portion which is cantilevered over at least a portion of the rotor. The flywheel can also have a contact surface adapted to impart energy from the flywheel when contacted by a moveable member. The overlapping portion can be adapted to rotate radially about at least a portion of the motor. The power tool can have a motor which has an inner rotor, or a motor which has an outer rotor. The flywheel can have a portion which is cantilevered over at least a portion of said rotor.

In an embodiment, a power tool can have an electric motor having a motor housing and a rotor having a rotor shaft. The rotor shaft can be coupled to a flywheel which can have a portion which is cantilevered over at least a portion of the motor housing. The flywheel can also have a contact surface adapted to impart energy from the flywheel when contacted by a moveable member. The overlapping portion can be adapted to rotate radially about at least a portion of the motor housing. The power tool can have a motor which has an inner rotor, or a motor which has an outer rotor.

The power tool can have an overlapping portion which supports a flywheel ring which can have a contact surface. Optionally, the contact surface can have a geared portion. The contact surface can optionally have at least one grooved portion. The contact surface can optionally have at least one toothed portion.

In an embodiment, the power tool can have a flywheel ring and a rotor shaft which rotate in a ratio in a range of 0.5:1.5 to 1.5:0.5; such as in a range of 1:1.5 to 1.5:1. In an embodiment, the power tool can have a flywheel ring and a rotor shaft which rotate in a ratio of about 1:1. In an embodiment, the power tool can have a flywheel ring and a rotor shaft which rotate in a ratio of 1:1. The power tool can also have a flywheel ring which rotates at a speed in a range of from about 2500 rpm to about 20000 rpm. The power tool can also have a flywheel ring which rotates at a speed in a range of from about 5600 rpm to about 10000 rpm. In another embodiment, the power tool can have a flywheel ring which has a contact surface which has a speed in a range of from about 20 ft/s to about 200 ft/s. In yet another embodiment, the power tool can have a flywheel ring which has an inertia in a range of from about 10 J(kg*m^2) to about 500 J(kg*m^2).

In an embodiment, the power tool can have a flywheel ring which rotates in a plane parallel to a driver profile centerline plane. The power tool can also have a moveable member which is a driver blade which has a driving action which is energized by a transfer of energy from contact of the driver blade with the flywheel. The power tool can also have a moveable member which is a driver profile which has a driving action which is energized by a transfer of energy from contact of the driver profile with the flywheel.

The power tool can be a cordless power tool. The power tool can be a cordless nailer and can be adapted to drive a nail. The power tool can also be driven by a power cord, or be pneumatic or receive power from another source.

In an embodiment, a fastening device can have a motor having a cantilevered flywheel. The cantilevered flywheel can have a contact surface adapted for frictional contact with a driving member adapted to drive a fastener. The fastening device can have a motor which has an inner rotor, or a motor which has an outer rotor. The motor can be a brushed motor or a brushless motor. The motor can be an inner rotor motor which can be a brushed motor or an outer rotor motor which can be a brushed motor. The motor can be an inner rotor motor which can be a brushless motor or an outer rotor motor which can be a brushless motor.

In an embodiment, the fastening device can also have a cupped flywheel. The cupped flywheel can have a flywheel ring. In an embodiment, at least a portion of the cupped flywheel can be cantilevered over at least a portion of said motor and/or motor housing. The cupped flywheel can have a contact surface. The cupped flywheel can have a geared flywheel ring.

In an embodiment, the cupped flywheel can have a mass in a range of from about 1 oz to about 20 oz. In another embodiment, the fastening device can have a cantilevered flywheel which can have a diameter in a range of from about 0.75 to about 12 inches. The cantilevered flywheel can be adapted to rotate at an angular velocity of from about 500 rads/s to about 1500 rads/s. The cantilevered flywheel can be adapted to have a flywheel energy in a range of from about 10 j to about 1500 j.

In an embodiment, the fastening device can have a driving member which is driven with a driving force of from about 2 j to about 1000 j. In another embodiment, the fastening device can have a driving member which is driven at a speed of from about 10 ft/s to about 300 ft/s. The fastening device can have a driving member which is a driver blade. The fastening device can have a driving member which is a driver profile.

The fastening device can have a direct drive mechanism. In an embodiment, the direct drive mechanism can have a cantilevered flywheel. In another aspect, the fastening device can have a drive mechanism which is clutch-free.

The fastening device can be a nailer and can be adapted to drive a fastener which is a nail.

In an embodiment, a power tool can have a motor having a rotor and a flywheel adapted for turning by the rotor. The flywheel can have a flywheel portion which is positioned radially over at least a portion of the motor. In an embodiment, the flywheel portion can be at least a part of a flywheel ring, or can be a flywheel ring. In an embodiment, the flywheel portion can be at least a part of a flywheel body, or a flywheel body. In an embodiment, the flywheel portion can be at least a part of a cupped flywheel, or a cupped flywheel.

In an embodiment, the power tool can have a flywheel which is a cupped flywheel. The flywheel body can have a flywheel inner circumference which is configured radially about at least a portion of the motor. In another embodiment, the power tool can have a flywheel which is a cupped flywheel and which has a flywheel ring having at least a part which positioned radially over at least a portion of the motor.

In an embodiment, the power tool can have a motor housing which houses at least a portion of the motor and a flywheel portion which is positioned radially over at least a portion of the motor housing.

In an embodiment, the power tool can have a flywheel adapted for clutch-free turning by the motor. In another embodiment, the power tool can have a flywheel adapted for transmission-free turning by the motor. In yet another embodiment, the power tool can have a flywheel which can be adapted for turning by the rotor in a ratio of 1 turn of the flywheel to 1 turn of the rotor. In even another embodiment, the power tool can have a flywheel which can be adapted for turning by the rotor in a ratio of 1.5 turn of the flywheel to 1 turn of the rotor to 1.0 turn of the flywheel to 1.5 turn of the rotor.

In an embodiment, the power tool can be a fastening device. In another embodiment, the power tool can be a fastening device adapted to drive a nail into a workpiece.

In an embodiment, a power tool can have a motor having a rotor axis and a flywheel adapted for turning by the motor. The flywheel can have a flywheel portion coaxial to the rotor axis and which is at least in part located over at least a portion of the motor. The power tool can have a flywheel body having a flywheel body portion which radially surrounds at least a portion of the motor. The power tool can have a cupped flywheel having a cupped flywheel portion which radially surrounds at least a portion of the motor. The power tool can have a cupped flywheel having a flywheel ring and in which a portion of the flywheel ring is adapted to rotate coaxial to the rotor axis. The power tool can have a flywheel portion which has a flywheel contact surface which is adapted to rotate coaxial to the rotor axis. In an embodiment, the flywheel contact surface which can be adapted to have a velocity of at least 10 ft/s and in which the flywheel contact surface can be adapted to revolve coaxially about the rotor axis.

In an embodiment, the power tool can have a flywheel portion which is a cantilevered portion. The power tool can have a flywheel portion which is cantilevered over at least a portion of the motor. The flywheel portion which is cantilevered over at least a portion of the motor can have a contact surface.

In another embodiment, the power tool can have a flywheel portion which is cantilevered over at least a portion of the motor and can have a geared flywheel ring. In yet another embodiment, the power tool can have a motor housing which houses at least a portion of the motor and in which the flywheel has a flywheel inner circumference which is configured radially about at least a portion of the motor and which has a flywheel motor clearance of greater than 0.02 mm.

The power tool can be a fastening device.

In addition to the disclosure of articles, apparatus and devices herein, this disclosure encompasses a variety of method of use and construction of the disclosed embodiment. For example, a method for driving a fastener, can have the steps of: providing a motor and a cantilevered flywheel adapted to be turned by the motor; providing a driving member adapted to drive a fastener into a workpiece; providing a fastener to be driven; configuring the cantilevered flywheel such that at least a portion of the cantilevered flywheel can be reversibly contacted with a portion of the driving member; operating the cantilevered flywheel at an inertia of from about 2 j to about 500 j; causing the driving member to reversibly contact at least a portion of the cantilevered flywheel; imparting a driving force in a range of from about 1 j to about 475 j to the driving member from the cantilevered flywheel; and driving the fastener into the workpiece. The motor which is provided can have an inner rotor or an outer rotor. Additionally, the motor provided can be a brushed motor or a brushless motor.

In an embodiment, the method of driving a fastener can also have the step of operating the cantilevered flywheel at a speed in a range of from about 2500 rpm to about 20000 rpm. In an embodiment, the method of driving a fastener can also have the step of operating the cantilevered flywheel at an angular velocity in a range of from about 250 rads/s to about 2000 rads/s.

In another embodiment, the method of driving a fastener can also have the steps of providing a fastener which is a nail; and driving the nail into the workpiece.

Throughout this specification and figures like reference numbers identify like elements.

DETAILED DESCRIPTION OF THE INVENTION

The disclosed fastening tool can have of a wide variety of designs and can be powered by a number of power sources. For example, power sources for the fastening tool can be manual, pneumatic, electric, battery, combustion, solar or use other (or multiple) sources of energy, such as battery and electric powered. The fastening can be cordless or can have a power cord. In an embodiment, the fasten can have both a cordless mode and a mode in which a power cord is used.

In an embodiment, the power tool can be driven by an inner rotor motor500and a flywheel700which can be a cantilevered flywheel899, such as a cupped flywheel702(e.g.FIG. 7). The inner rotor motor500can be a brushed motor501, a brushless motor, or of another type. The inner rotor motor500can be in instant start motor and can drive an instant start flywheel and/or fastening device driver.

The disclosed use of the cantilevered flywheel899, such as the cupped flywheel702achieve numerous benefits, such as allowing brushed motors to be used, significant reductions in manufacturing cost, smaller and lighter power tools. In embodiments, the inner rotor motor500with the flywheel700can drive a clutch-free (clutchless) and/or transmission-free direct drive mechanism. The inner rotor motor500with the cantilevered flywheel899achieves an efficient direct drive system for a flywheel to drive action in a power tool and/or fastening device.

The power tool drive mechanism disclosed herein can be used with a broad variety of fastening tools, including but not limited to, nailers, drivers, riveters, screw guns and staplers. Fasteners which can be used with the magazine100(e.g.FIG. 1) can be in non-limiting example, roofing nails, finishing nails, duplex nails, brads, staples, tacks, masonry nails, screws and positive placement/metal connector nails, rivets and dowels.

In an embodiment in which the fastening tool is a nailer. Additional areas of applicability of the present invention can become apparent from the detailed description provided herein. The detailed description and specific examples herein are not intended to limit the scope of the invention. This disclosure and the claims of this application are to be broadly construed.

FIG. 1is a side view of an exemplary nailer having a magazine viewed from the knob-side90(e.g.,FIG. 1andFIG. 3) and showing the pusher assembly knob140. The embodiment ofFIG. 1shows a magazine100which is constructed according to the principles of the present invention is shown in operative association with a nailer1. In this example,FIG. 1's nailer1is a cordless nailer. However, the nailer can be of a different type and/or a power source which is not cordless.

Nailer1has a housing4and a motor having an inner rotor, herein as “inner rotor motor500”, (e.g.FIG. 7) which can be covered by the housing4. In the embodiment ofFIG. 1, the inner rotor motor500drives a nail driving mechanism for driving nails which are fed from the magazine100. The terms “driving” and “firing” are used synonymously herein regarding the action of driving or fastening a fastener (e.g. a nail) into a workpiece. A handle6extends from housing4to a base portion8having a battery pack10. Battery pack10is configured to engage a base portion8of handle6and provides power to the motor such that nailer1can drive one or more nails which are fed from the magazine100.

Nailer1has a nosepiece assembly12which is coupled to housing4. The nosepiece can be of a variety of embodiments. In a non-limiting example, the nosepiece assembly12can be a fixed nosepiece assembly300(e.g.FIG. 1), or a latched nosepiece assembly13(e.g.FIG. 4).

The magazine100can optionally be coupled to housing4by coupling member89. The magazine100has a nose portion103which can be proximate to the fixed nosepiece assembly300. The magazine100can engage the fixed nosepiece assembly300at a nose portion103of the magazine100which has a nose end102. In an embodiment, the fixed nosepiece assembly300can fit with the magazine100by a magazine interface380. In an embodiment, the magazine screw337can be screwed to couple the fixed nosepiece assembly300to the magazine100, or unscrewed to decouple the magazine100from the fixed nosepiece assembly300.

The magazine100can be coupled to a base portion8of a handle6at a base portion104of magazine100by base coupling member88. The base portion104of magazine100is proximate to a base end105. The magazine can have a magazine body106with an upper magazine107and a lower magazine109. An upper magazine edge108is proximate to and can be attached to housing4. The lower magazine109can have a lower magazine edge101.

The magazine100can include a nail track111sized to accept a plurality of nails55therein (e.g.FIG. 5). The nails can be guided by a feature of the upper magazine107which guides at least one end of a nail, such as a nail head. The lower magazine109can guide a portion of a nail, such as a nail tip supported by a lower liner95. The plurality of nails55can be moved through the magazine100towards nosepiece assembly12by a force imparted by contact from the pusher assembly110.

FIG. 1illustrates an example embodiment of the fixed nosepiece assembly300which has an upper contact trip310and a lower contact trip320. The lower contact trip320can be guided and/or supported by a lower contact trip support325. The fixed nosepiece assembly300can have a nose332which can have a nose tip333. When the nose332is pressed against a workpiece, the lower contact trip320and the upper contact trip310can be moved toward the housing4which can compress a contact trip spring330. A depth adjustment wheel340can be moved to affect the position of a depth adjustment rod350. In an embodiment, the depth adjustment wheel340can be a thumbwheel. The position of the depth adjustment rod also affects the distance between nose tip333and insert tip355(e.g.FIG. 3). A detail of a nosepiece insert410can be found inFIG. 3.

The magazine100can hold a plurality of nails55(FIG. 6) therein. A broad variety of fasteners usable with nailers can be used with the magazine100. In an embodiment, collated nails can be inserted into the magazine100for fastening.

FIG. 2is a side view of exemplary nailer1having a magazine100and is viewed from a nail-side58. Allen wrench600is illustrated as reversibly secured to the magazine100.

FIG. 3is a detailed view of a fixed nosepiece with a nosepiece insert and a mating nose end of a magazine.FIG. 3is a detailed view of the nosepiece assembly300from the channel side412which mates with the nose end102of the magazine100.

FIG. 3detail A illustrates a detail of the nosepiece insert410from the channel side412. The nosepiece insert410has the rear mount screw hole417for the nail guide insert screw421. Nosepiece insert410can also have a blade guide415and nail stop420. The driver blade54can extend from the drive mechanism into channel52. Nosepiece insert410can be fit to nosepiece assembly300and can have an interface seat425. Nosepiece insert410can also have a nosepiece insert screw hole422and a magazine screw hole336. Optionally, insert screw401for mounting the nosepiece insert410to the fixed nosepiece assembly300can be a rear mounted screw or a front mounted screw. Optionally, one or more prongs437respectively having a screw hole336for the magazine screw337can be used. In an embodiment, a nail channel352can be formed when the nosepiece insert410is mated with the nose end102of the magazine100.

FIG. 3detail B is a front detail of the face of the nose end102having nose end front side360. The nose end102can have a nose end front face359which fits with channel side412. The nose end102can have a nail track exit353. For example, a loaded nail53is illustrated exiting nail track exit353.FIG. 3detail B also illustrates a screw hole357for magazine screw337. In an embodiment, nosepiece insert410(FIG. 3) having nose400with insert tip355is inserted into the fixed nosepiece assembly300.

FIG. 4is a side view of another embodiment of exemplary nailer1viewed from the knob-side90. In this embodiment, the nosepiece assembly12is a latched nosepiece assembly13having a latch mechanism14. Also in this embodiment, the magazine100is coupled to the housing4and coupled to the base8of the handle6by bracket11.

FIG. 5is a side sectional view of the latched nosepiece assembly13having a nail stop bridge83. In an example embodiment, channel52can be formed from two or more pieces, e.g. nose cover34and at least one of groove50and nosepiece28(and/or nail stop bridge83). Nosepiece28has a groove50formed therein which cooperates with the nose cover34(when the nose cover34is in its locked position). The locking of nose cover34against groove50can form an upper portion of channel52. The driver blade54can extend from the drive mechanism into channel52. The driver blade54can engage the head of the loaded nail53to drive loaded nail53. Cam56prevents escape of driver blade54from the nosepiece28. The nail stop bridge83that bridges the channel52engages each nail of the plurality of nails55as they are pushed by the pusher112along the nail track111of the magazine100and into channel52. The tips of the plurality of nails55can be supported by the lower liner95, or a lower support.

FIG. 6illustrates the nail stop420, the nail stop centerline427, a longitudinal centerline927of the magazine100, a longitudinal centerline1027of the nail track111, a longitudinal centerline1127of the plurality of nails55and a longitudinal centerline1227of the nailer1.FIG. 6illustrates that in an embodiment having fixed nosepiece300having nosepiece insert410can be mated with the nose end102channel centerline429can be collinear with nail1centerline1029. Like reference numbers inFIG. 1identify like elements inFIG. 6. In an embodiment, the magazine100can have its longitudinal centerline927offset from a longitudinal centerline1227of nailer1by an angle G. Angle G can be 14 degrees. In an embodiment, nail stop centerline427can be collinear with a longitudinal centerline927of the magazine100. Additionally, in an embodiment, longitudinal centerline927of the magazine100can be collinear with a longitudinal centerline1027of the nail track111, as well as collinear with a nail stop centerline427. Longitudinal centerline1127of the plurality of nails55can be collinear with nail stop centerline427. Nail stop centerline427can be offset as shown inFIG. 6at an angle G measured from nailer1channel centerline429. In an embodiment, angle G aligns the longitudinal centerline1027of the nail track111with the centerline1127of the plurality of nails55and also nail stop centerline427.

FIG. 7is a perspective view of the cupped flywheel positioned for assembly onto an inner rotor motor500.FIG. 7illustrates the inner rotor motor500having a motor housing510and a first housing bearing520which bears a rotor shaft550driven by an inner rotor540(FIG. 10A). In an embodiment, the motor used can alternatively be a frameless motor which does not include a motor housing, or which can have only a partial motor housing which covers part of a longitudinal length of the motor.FIG. 7also illustrates a flywheel700which is a cantilevered flywheel899and which in the embodiment ofFIG. 7is the cupped flywheel702. The cupped flywheel702is shown in a disassembled state and in coaxial alignment with a rotor centerline1400. The cupped flywheel702is shown in an assembled state, for example inFIGS. 10A and 10B. In an embodiment, the cupped flywheel702can have a flywheel body710and at least one of a flywheel opening720and/or a plurality of flywheel openings720. Herein, both a single flywheel opening and a number of flywheel openings are designated by the reference numeral “720”. There is no limitation at to the number flywheel openings which can be used. Such openings achieve a reduction and/or tailoring of the mass of the flywheel to meet structural, inertial and power consumption specifications. In an embodiment, the cupped flywheel702can have a flywheel ring750which can be a geared flywheel ring760. Optionally, the cupped flywheel702can have a flywheel bearing770which interfaces with the rotor shaft550.

FIG. 8is a side view of the cupped flywheel positioned for assembly onto the inner rotor motor500. As illustrated inFIG. 8, the cupped flywheel can be positioned such that a flywheel axial centerline1410is collinear with a rotor centerline1400. In an embodiment, the cupped flywheel702can be frictionally attached to the rotor shaft550by means of fitting the flywheel bearing770onto a portion of the rotor shaft550. In other embodiments, the cupped flywheel702can be affixed to the rotor shaft550by other means, such as using a lock and key configuration, using a “D” shaped shaft portion mated with a “D” shaped portion of the flywheel bearing770, using fasteners such a screw, a linchpin, a bolt, a wed, or any other means which attached the cupped flywheel702to the rotor shaft550. In an embodiment, the inner rotor540and/or the rotor shaft550and the cupped flywheel702and/or the flywheel bearing770can be manufactured as one piece, or multiple pieces.

FIG. 9is a front view of the cupped flywheel702having a number of the flywheel opening720. The flywheel ring750is shown extending radially away from the center of the cupped flywheel702and the flywheel bearing770. There is no limitation to the number of flywheel rings which can be used. Optionally, one or more flywheel rings can be located along the length of the cupped flywheel702. Each flywheel ring can have a contact surface to impart energy to a moveable member. Multiple flywheel rings can power multiple members, or the same member.

FIG. 10Ais a side view of a drive mechanism having the cupped flywheel702which is frictionally engaged with a driver profile610. InFIG. 10A, the mating of the flywheel ring750with the driver profile610is shown. There is no limitation as to the means by which the flywheel700imparts energy to the driver600, driver profile610and/or driver blade54. In the example ofFIG. 10A, the flywheel ring750is a geared flywheel ring760having a first gear groove783and a second gear groove787which is shown in frictional contact with driver profile610and more specifically a first profile tooth611and a second profile tooth613. By this frictional contact, at least a portion of the rotational energy developed in the cupped flywheel702is imparted to the driver profile610propelling the driver profile through a driving action to cause the driver blade54born by the driver profile610to drive a nail53.

FIG. 10Bis a cross-sectional view of a drive mechanism having the cupped flywheel702which is frictionally engaged with the driver profile610. InFIG. 10B, the cross-sectional view illustrates the cantilevered nature of the flywheel ring750over at least a portion of the inner rotor motor500. In an embodiment, the flywheel ring750can be cantilevered over the entirety of the inner rotor motor500, or any portion of the inner rotor motor500. In the embodiment ofFIG. 10B, the cup shape of the cupped flywheel702when coupled to the rotor shaft550as illustrated inFIG. 10Bconfigures the flywheel ring750radially and in a cantilevered configuration about at least a portion of inner rotor motor500and/or motor housing510and/or rotor540. The flywheel ring750can be positioned along the rotor centerline1400at a position at which the flywheel ring750is positioned such that a portion of each of the motor housing510, the stator530, the inner rotor540and the rotor shaft550is radially within a flywheel ring inner circumference707. The flywheel ring inner circumference707can have a diameter which optionally is the same or different from the flywheel inner diameter706. The flywheel ring inner circumference707can be separated from the motor housing510by a flywheel motor clearance701. There is no limitation as to the dimension of the flywheel motor clearance701. The clearance701can be in a range of from less than a millimeter to one foot or more, such as 0.02 mm, 0.05 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 7.5 mm, 10 mm, 15 mm or 25 mm, or greater. For example, in an embodiment of a power tool the clearance can be in a range of from 0.02 mm to 10 mm can be used. In another non-limiting example for larger industrial equipment a clearance of 5 mm to 25 mm or greater, can be used.

In the example embodiment of FIB.10B, the flywheel ring inner circumference707can be the same as a flywheel inner circumference709. The flywheel inner circumference709can be the same or different from the flywheel ring inner circumference707. The flywheel inner circumference709can have any dimension which is separated from the motor housing510by a clearance. The flywheel inner circumference709can be at least in part over at least a portion of the inner rotor motor500and/or the motor housing510. The flywheel inner circumference709can at least in part radially encompass at least a part of inner rotor motor500and/or the motor housing510.

The driving action of the driver profile610can be used to drive a fastener, such as a nail53, into a workpiece.FIGS. 11, 12, 12B and 13disclose a selection of steps taking from a driving action of the driver profile610. The driver profile610can be driven by a frictional contact with the flywheel700which can be the cantilevered flywheel899. In an embodiment, the driver profile610can have a driver blade54which can be propelled to physically contact the fastener such that the fastener is driven into a workpiece. In an embodiment, the fastener can be a nail53. The driving action of the driver profile610can begin when the driver profile610makes contact with the flywheel700which can be a cantilevered flywheel899, such as the cupped flywheel702. Upon contact by the driver profile610with the flywheel700, the driver profile610can be propelled toward the nosepiece12and a fastener such as a nail53positioned in the nosepiece12for driving into a work piece. The driver profile610and/or the driver blade54can physically contact the fastener such that the fastener is driven into a workpiece. After the fastener is driven into the workpiece, the driver profile610can return to its resting position. In an embodiment, the driver profile610can be driven by means of frictional contact by the flywheel750of the cupped flywheel702.

FIG. 11is a side view of a drive mechanism having the cupped flywheel702and a driver profile610which is in a resting state. InFIG. 11, the driver profile610has a portion proximate to but not touching the flywheel ring750of the cupped flywheel702. InFIG. 11, the driver blade54is shown extending from its seating in the driver profile610to the latched nosepiece assembly13and its parts, such as the nosepiece28. The flywheel700can rotate at a speed and an angular velocity.

Numeric values and ranges herein, unless otherwise stated, are intended to have associated with them a tolerance and to account for variances of design and manufacturing. Thus, a number is intended to include values “about” that number. For example, a value X is also intended to be understood as “about X”. Likewise, a range of Y-Z, is also intended to be understood as within a range of from “about Y-about Z”. Unless otherwise stated, significant digits disclosed for a number are not intended to make the number an exact limiting value. Variance and tolerance is inherent in mechanical design and the numbers disclosed herein are intended to be construed to allow for such factors (in non-limiting e.g., ±10 percent of a given value). Likewise, the claims are to be broadly construed in their recitations of numbers and ranges.

In the embodiment ofFIG. 11, the cantilevered flywheel899is shown to be the cupped flywheel702. There is no limitation regarding the diameter or dimensions of any of the various embodiments of the flywheel700disclosed herein, such as the cantilevered flywheel899which can be the cupped flywheel702, or other type of cantilevered flywheel having at least a portion projecting over at least a portion of the inner rotor motor500. In other example embodiments, the flywheel700can have a number of flywheel struts713(FIG. 18G), or flywheel700can have a flywheel mesh structure740(FIG. 18F), or other structure. Any of the flywheels disclosed herein can have a diameter from small to quite large, such as in a range of from less than 0.5 inches to greater than 24 inches. For example cupped flywheel702can have a portion, such as a flywheel body portion710and/or a flywheel outer diameter704(FIG. 19A) having a diameter which can be 0.05 in, 1.0 in, 1.5 in, 2.0 in, 3.0 in, 4.0 in, 5.0 in, 6.0 in, 7.0 in, 8.0 in, 9.0 in, 10.0 in, 11.0 in, 12.0 in, 12.6 in, 15 in, 18 in, 24 in. The flywheel ring750can also have an outer diameter751which can be 0.05 in, 1.0 in, 1.5 in, 2.0 in, 3.0 in, 4.0 in, 5.0 in, 6.0 in, 7.0 in, 8.0 in, 9.0 in, 10.0 in, 11.0 in, 12.0 in, 12.6 in, 15 in, 18 in, 24 in. Additionally, there is no limitation to the structural supports for the flywheel ring750.

There is no limitation to the speed at which any of the many types and variations of flywheels operate. For example, any of the flywheels disclosed herein can be operated at any rotational speed in the range of from 2500 rpm to 20000 rpm, or greater. In an embodiment, cupped flywheel702can be operated at a rotational speed of from less than 2500 rpm to 20000 rpm, or greater. For example, cupped flywheel702can be operated at a rotational speed of 1000 rpm, 2500 rpm, 5000 rpm, 5600 rpm, 7500 rpm, 8000 rpm, 9000 rpm, 10000 rpm, 12000 rpm, 12500 rpm, 13000 rpm, 14000 rpm, 15000 rpm, 17500 rpm, 18000 rpm, 20000 rpm, 25000 rpm, 30000 rpm, 32000 rpm, or greater.

There is also no limitation to the angular velocity at which any of the many types and variations of flywheels operate. For example, any of the flywheels disclosed herein can be operated at any rotational speed in the range of from 250 rads/s to 3000 rads/s, or greater. In an embodiment, the cupped flywheel702can be operated at a rotational speed of from less than 250 rads/s to 3000 rads/s, or greater. For example, the cupped flywheel702can be operated at a rotational speed of 200 rads/s, 300 rads/s, 400 rads/s, 500 rads/s, 600 rads/s, 700 rads/s, 800 rads/s, 900 rads/s, 1000 rads/s, 1200 rads/s, 13000 rads/s, 1400 rads/s, 1500 rads/s, 1600 rads/s, 1750 rads/s, 2000 rads/s, 2200 rads/s, 2500 rads/s, 3000 rads/s, or greater.

There is also no limitation to the velocity of a flywheel portion and/or a portion of the contact surface715at which any of the many types and variations of flywheels operate. For example, any of the flywheels disclosed herein can be operated such that the velocity of a flywheel portion and/or a portion of contact surface715is in a range of from less than 5 ft/s to 400 ft/s, or greater. For example cupped flywheel702can be operated such that velocity of a flywheel portion and/or a portion of contact surface715is 2.5 ft/s, 5 ft/s, 7.5 ft/s, 9 ft/s, 10 ft/s, 15 ft/s, 20 ft/s, 25 ft/s, 30 ft/s, 50 ft/s, 75 ft/s, 90 ft/s, 100 ft/s, 125 ft/s, 150 ft/s, 175 ft/s, 190 ft/s, 200 ft/s, 250 ft/s, 300 ft/s, 350 ft/s, 400 ft/s, or greater.

There is no limitation to the inertia of any of the many types and variations of flywheels. For example, any of the flywheels disclosed herein can be operated to have any inertia in the range of from less than 10 J(kg*m^2) to 500 J(kg*m^2), or greater. For example cupped flywheel702can have an inertia of less than 5 J(kg*m^2), 7.5 J(kg*m^2), 10 J(kg*m^2), 25 J(kg*m^2), 50 J(kg*m^2), 75 J(kg*m^2), 90 J(kg*m^2), 100 J(kg*m^2), 150 J(kg*m^2), J(kg*m^2), 200 J(kg*m^2), 250 J(kg*m^2), 300 J(kg*m^2), 350 J(kg*m^2), 400 J(kg*m^2), 450 J(kg*m^2), 500 J(kg*m^2), 600 J(kg*m^2), or greater.

FIG. 12Ais a side view of a drive mechanism having the cupped flywheel702and a driver profile610which is in an engaged state. InFIG. 12A, the driving process is shown at a point of the sequence in which the driver profile610is frictionally engaged with the cupped flywheel702. At this stage the cupped flywheel702will impart energy to the driver profile610which bears the driver blade54. This energy will propel the driver profile toward the nosepiece12, which in the example ofFIG. 12Ais the latched nosepiece13.

There is no limitation to the torque generated by the inner rotor motor500. For example, any of the flywheels disclosed herein can be driven by the inner rotor motor500which can generate a torque in the range of from less than 0.005 Nm to 10 Nm, or greater. For example, the inner rotor motor500can generate any torque in the range of from less than 0.005 Nm, 0.01 Nm, 0.05 Nm, 0.075 Nm, 0.09 Nm, 0.1 Nm, 1.5 Nm, 2 Nm, 2.5 Nm, 3 Nm, 3.5 Nm, 4 Nm, 4.5 Nm, 5 Nm, 6 Nm, 7 Nm, 10 Nm, or greater.

There is no limitation to the velocity of the driver profile610at which any of the many types and variations of flywheels operate. For example, any of the driver profile610disclosed herein can be operated at any velocity in the range of from less than 10 ft/s to 400 ft/s, or greater. For a power tool and/or fastening device having the cupped flywheel702can have the driver profile610which can have a velocity of for example, 2.5 ft/s, 5 ft/s, 7.5 ft/s, 9 ft/s, 15 ft/s, 20 ft/s, 25 ft/s, 30 ft/s, 50 ft/s, 75 ft/s, 90 ft/s, 100 ft/s, 125 ft/s, 150 ft/s, 175 ft/s, 190 ft/s, 200 ft/s, 250 ft/s, 300 ft/s, 350 ft/s, 400 ft/s, or greater.

FIG. 12Bis a side view of a drive mechanism having the cupped flywheel and a driver which are in an engaged state and shows an embodiment in which the flywheel ring centerline plane1600is coplanar with the driver centerline plane1500.FIG. 12Bprovides a detailed illustration of the geometry of the example embodiment disclosed inFIG. 12A. In an embodiment, a cantilevered flywheel member such as the flywheel ring750can be positioned along its rotational plane to have a flywheel ring center line plane1600coplanar to a driver centerline plane1500. There is no limitation to the geometries and configurations which can be used to coordinate a portion of the flywheel700to contact the driver profile610. In the embodiment shown inFIG. 12A, the cupped flywheel702has a cantilevered position of a portion of cupped flywheel body710and flywheel ring750such that they are projected over at least a portion of the inner rotor motor500.

In the example ofFIG. 12B, the alignment of the flywheel ring center line plane1600coplanar to the driver centerline plane1500can further be positioned coplanar to a plane extending from the channel centerline429shown inFIG. 6. In the embodiment ofFIG. 12B, the radial centerline1602of the flywheel ring750, the driver profile centerline1502, driver blade centerline1554and the channel centerline429can be coplanar.

In an embodiment, the radial centerline1602of the flywheel ring750and the centerline of the driver profile centerline1502can be parallel. In an embodiment, the radial centerline1602of the flywheel ring750and the centerline of the channel centerline429can be parallel. In an embodiment, the driver profile centerline1502and the channel centerline429can be parallel. In an embodiment, the driver profile centerline1502and the driver blade centerline1554can be parallel. In an embodiment, the driver profile centerline1502and driver blade centerline1554can be collinear. In an embodiment, the driver profile centerline1502, the driver blade centerline1554and the channel centerline429can be collinear.

There is no limitation to the geometries that can be used regarding the coordination of the components of the drive mechanism disclosed herein. In another embodiment, the driver blade centerline1554can be coplanar with the flywheel ring centerline plane1600. This allows for many configurations of the driver blade54and flywheel700to achieve a successful driving of the driver blade54. In another embodiment, the driver profile centerline1502can be coplanar with the flywheel ring center line plane1600. Many configurations of the driver profile610and flywheel700can achieve a successful driving of the driver profile610. In another embodiment, the channel centerline429can be coplanar with the flywheel ring center line plane1600. Many configurations of the channel52and flywheel700can achieve a successful driving of a nail53.

While the embodiment ofFIG. 12Bshows the radial centerline1602of the flywheel ring750and the driver profile centerline1502in a coplanar arrangement, arrangements which are not coplanar can also be used. For example, configurations can be used in which the driver blade centerline1554is not coplanar with the radial centerline1602of the flywheel ring750. In other examples, configurations can be used in which the radial centerline1602of the flywheel ring750and the channel centerline429are not coplanar. In another embodiment, the driver blade centerline1554is not collinear with the driver profile centerline1502.

There is also no limitation to an angle of contact which generates friction and/or otherwise transfers energy between the flywheel700and the driver profile610and/or driver blade54.FIG. 12Billustrates a tangential contact between a portion of the driver profile610and the flywheel ring750. Any angle sufficient to allow a transfer of energy from the flywheel700to the driver profile610and/or directly to the driver blade54can be used. For example, a contact between the flywheel700can be configured such that the flywheel ring centerline plane1600intersects the driver centerline plane1500at an angle, such as at an angle less than 90°, or less than 67°, or less than 45°, or less than 34°, or less than 25°, or less than 18°, or less than 15°, or less than 10°, or less than 5°, or less than 3°.

FIG. 13is a side view of a drive mechanism having the cupped flywheel and a driver profile610which has progressed in its driving action to a position striking a fastener.FIG. 13illustrates the driver profile610at a position in which is still engaged with the flywheel ring750, yet is near the end of its driving motion which terminates when the driver profiles motion toward the nosepiece assembly12ceases and the motion of profile610toward the nosepiece12stops and/or when recoil begins of the driver profile610back toward its original configuration as show inFIG. 11. Arrow2000indicates the direction of motion of the driver profile610during a driving action.

FIG. 14is a side view of a drive assembly having the cupped flywheel702.FIG. 14shows an example embodiment of a nailer drive mechanism at the state in which the driver profile610has initially and tangentially made frictional contact with the flywheel ring750. This is a position analogous to that depicted inFIG. 12.FIG. 14illustrates an embodiment of the driver assembly800including an activation mechanism820which has an activation member830which by its movement can impart a force along the engagement axis1800(also illustrated inFIG. 12Bas a +y and −y axis) which causes the driver profile610to come into frictional contact with flywheel700to effect a driving motion of driver profile610. The engagement movement of activation member830is reversible and illustrated by a double pointed engagement movement arrow835.FIG. 14also illustrates an embodiment of a driver profile return mechanism1700which absorbs recoil energy and guides the driver profile610back to its resting state, prior to another driving action.

FIG. 15is a top view of a partial drive assembly having the cupped flywheel.FIG. 15shows the driver profile610at a resting state.FIG. 15also illustrates the parallel and/or coplanar configuration of driver profile centerline1502, the flywheel ring centerline plane1600and the driver blade centerline1554.

FIG. 16Ais a perspective view of a drive assembly having the cupped flywheel702shown in conjunction with the magazine100feeding the plurality of nails55.FIG. 16Aillustrates a driver assembly800in conjunction with the driver profile610and cantilevered drive1900. The cantilevered drive can have an inner rotor motor500and the cupped flywheel702, as well as a geared flywheel ring760which can frictionally engage the driver profile610when activated by the activation mechanism820. In this example embodiment, the power tool is a nailer1having the latched nosepiece assembly13and a magazine100feeding a plurality of nails55.

FIG. 16Bis a sectional view of the drive assembly shown inFIG. 16having the cupped flywheel sectioned along the longitudinal centerline plane of the rotor shaft.FIG. 16illustrates a cross section of the activation mechanism820and driver profile610bearing driver blade54. In this embodiment, the driver profile610is engaged by the flywheel ring750. The cupped flywheel702, the flywheel ring750, the inner rotor motor500, the rotor shaft550and flywheel bearing770are shown in cross section.FIG. 16Balso illustrates a bearing support ring920which in the cross section is shown as a ring of extra material having a thickness provided to strengthen the transition of shape (the approximate 90 degree angle) between the flywheel bearing770longitudinal axis and the plane of the flywheel face703. The bearing support ring920can be of a single body construction strengthening the transition of material between the bearing770and flywheel face703.

FIG. 17is a sectional view of a drive assembly having the cupped flywheel702taken along the driver centerline plane1500of the driver profile.FIG. 17is a sectional view of the driver assembly800example ofFIG. 16A, which inFIG. 17is shown in a cross sectional view taken along the flywheel ring centerline plane1600. In the example ofFIG. 17, the driver centerline plane1500and the flywheel ring centerline plane1600are shown in a coplanar configuration.FIG. 17illustrates an example of the alignment of the flywheel ring750, the driver profile610and the driver blade54in conjunction with the activation mechanism820. The stator530and inner rotor540of inner rotor motor500are shown in cross section.

FIGS. 18A-Gshow a variety of embodiments of cantilevered flywheel designs. There is no limitation to the design of the cantilevered flywheels or regarding the means of supporting such flywheels or transferring their energy to a moveable member, such as the driver profile610. The various cantilevered flywheel designs can have contact surface715, as shown in non-limiting example inFIGS. 18A, 20, 21, 22 and 23. The contact surface715can be any portion of the flywheel which contacts another member and which imparts energy to another member.

The contact surface715in its many types and variations can impart energy to the driver profile610and/or driver blade54. The interface between the contact surface715and the driver profile610and/or driver blade54can have a breadth of variety. For example, the interface can produce a frictional contact (e.g.FIG. 20) or a geared contact (e.g.FIGS. 10A, 10B and 21). The shape of the contact surface715can range from flat or flattened, to rough or patterned, to having large gearing. The shape of the contact surface in an axial direction along the −x to +x axis (FIG. 12B) can be any shape in the range of concave to convex. Additionally, the contact surface715can have a surface which is sinusoidal, grooved, adapted for a lock and key interface, pitted, nubbed, having depressions, having projections, or any of a variety of topography which can adapt the contact surface715to impart energy to another object and/or item, such as the driver profile610and/or driver blade54, or moveable member, gear or other member.

FIG. 18Ais a perspective view of the cupped flywheel702having the geared flywheel ring760. In the example ofFIG. 18A, the contact surface715is shown as a geared surface of the geared flywheel ring760. In the example ofFIG. 20, the contact surface715is a flattened surface which can cause another member to rotate or otherwise move. In the example ofFIG. 22, the contact surface715is a grinding surface of a flywheel ring grinder portion which can remove material from another article. In the example ofFIG. 23, the contact surface715is a saw tooth portion of flywheel ring saw portion767. In the many and varied embodiments, the contact surface715can be in a position cantilevered to rotate radially about at least a portion of the motor housing510and inner rotor motor500.

FIG. 18Bis a view of the cupped flywheel having a number of flywheel openings in the flywheel face. In the example ofFIG. 18B, a number of a flywheel openings720are present and pass through the flywheel face703. There is no limitation regarding the shape of the openings which are used with the cupped flywheel702. If the flywheel cup material is sufficiently thick, grooves or other features which can reduce the weight of the cupped flywheel702can be used whether or not an opening is created in any portion of the cupped flywheel702.

FIG. 18Cis a view of the cupped flywheel702having a number of flywheel slots in a flywheel body710. The cupped flywheel can have a flywheel slot725or a number of flywheel slots. Herein, a number of flywheel slots are also collectively referenced by the numeral725.FIG. 18Cshows the cupped flywheel702which has the number of flywheel slots725present in the flywheel body710. The number of the flywheel slots725can reduce the weight of the flywheel700, achieve a desired rotation balance of the flywheel, achieve inertial specifications of the flywheel700and meet performance specifications for the flywheel700. The number of flywheel slots725in the cupped flywheel702can be used to achieve design benefits, such as weight control and improved performance, analogous to those achieved by using a number of the flywheel openings720, or openings of other shapes.

FIG. 18Dis a view of the cupped flywheel702having the number of slots725present in the flywheel body710as well as present in the flywheel face703.

FIG. 18Eis a view of the cupped flywheel having a number of flywheel round openings in a flywheel body710and flywheel face703. In the example ofFIG. 18E, the cupped flywheel702has a number of a flywheel round openings730present in the flywheel body710, as well as present in the flywheel face703. WhileFIG. 18Eillustrates an example having a round opening, there is no limitation regarding the shape of the openings that can be used with any variety of the flywheel700disclosed herein. For example, openings can be round, oval, oblong, irregular, slots, decoratively shaped, patterned, or any desired shape and/or pattern.

FIG. 18Fis a view of the cupped flywheel having a mesh flywheel body and mesh flywheel face. There is no limitation as to the nature of the material which supports the contact surface715and imparts energy and/or rotational motion from the inner rotor motor500. Any material which supports the contact surface in a cantilevered position about at least a portion of the inner rotor motor500and/or the motor housing510can be used.FIG. 18Fillustrates an example embodiment in which a flywheel mesh structure740is used to support the flywheel ring750having a contact surface715which is a geared surface.

This disclosure is not limited to a cup-shaped flywheel. The flywheel700can be any type of flywheel which supports the contact surface715in a cantilevered position about at least a portion of the inner rotor motor500and/or the motor housing510.

FIG. 18Gis a view of a cantilevered flywheel ring supported by a number of flywheel struts713. In the example shown inFIG. 18G, the contact surface715is the surface of the geared flywheel ring760. In this embodiment, the geared flywheel ring760is supported by a number of flywheel struts713. In this example, the number of flywheel struts713can be coupled to flywheel bearing770which can be driven by the rotor shaft550.

There is no limitation regarding the relative geometries of the features of the cupped flywheel702.FIG. 19Ais a perspective view of the cupped flywheel having dimensions. The example embodiment ofFIG. 19illustrates the flywheel700which is the cupped flywheel702having a flywheel outer diameter704and a flywheel inner diameter706. The cupped flywheel702is born by the flywheel bearing770having a flywheel bearing length772and a flywheel bearing thickness815. In an embodiment, a bearing support ring920having a bearing support ring width926of material can be used to transition the flywheel face703material and the flywheel bearing770between a bearing support ring outer diameter811(also shown as support outer diameter922) and the flywheel inner diameter706. As shown inFIG. 19A, the bearing support ring920and the flywheel bearing770can be supported by material at an interfacing portion which can be of one body in construction and which can extend between the bearing support ring inner diameter924and bearing support ring outer diameter811. The flywheel bearing770can be coupled to rotor shaft550at an interface between flywheel bearing inner diameter813and rotor shaft550having a rotor outer diameter552. The cupped flywheel702can have a flywheel body outside diameter708from which a flywheel ring can extend radially in a direction away from the rotor shaft550and have a flywheel ring height752as measured inFIG. 19Abetween the flywheel outer diameter704and the flywheel body outside diameter708. The flywheel ring750can also have an outer diameter751.

The cupped flywheel702can have a flywheel length711which in projection can be composed of a flywheel ring length754, a flywheel body length712of flywheel body710and a flywheel bearing length772. A flywheel cup length714can have a length which in its projection can be composed of the flywheel ring length754and the flywheel body length712. Optionally, the flywheel bearing can be flat with the flywheel face703, not have a projection and not contribute to the flywheel length711. In other embodiments, the flywheel bearing is not used and has no contribution to the flywheel length711.

FIG. 19Aillustrates the cupped flywheel702having the flywheel ring750which has the contact surface715which is grooved and/or geared forming the geared flywheel ring760. There is no limitation to the type of gearing, grooving or surface characteristics of the contact surface715. In the embodiment ofFIG. 19A, the geared flywheel ring760has flywheel ring length754and a number of gear teeth. As shown inFIG. 19A, the geared flywheel ring760has a first gear tooth781having first gear tooth width791, a second gear tooth785having second gear tooth width795, and a third gear tooth789having third gear tooth width799. The first gear tooth781can be separated from the second gear tooth785by a first gear groove783having first gear groove width792. The second gear tooth785can be separated from the third gear tooth789by a second gear groove787having second gear groove width797.

FIG. 19Bis an example of cupped flywheel having a narrow cup and wide flywheel ring.FIG. 19Bis an example of another dimensional configuration of the cupped flywheel702having the flywheel ring750. In the embodiment of19B the flywheel body outside diameter708is less than that of the embodiment illustrated inFIG. 19Aand the flywheel ring height752is greater than that of the embodiment illustrated inFIG. 19A. Any dimension of the flywheel700and the cupped flywheel702can be set to meet any design specifications.

The application and use of a flywheel700which is a cantilevered flywheel899, such as cupped flywheel702is not limited by this disclosure. In addition to a nailer1, the cantilevered flywheel899which can be driven by an inner rotor motor500can be used with any power tool which can receive power from a flywheel directly or by means of a mechanism receiving power from the cantilevered flywheel899.FIGS. 20 and 21show examples to drive mechanisms which can use the cantilevered flywheel899.FIGS. 22, 23 and 24show examples types of power tool applications which can use the cantilevered flywheel899. Power tools which can use the technology of this disclosure include but are not limited to fastening tools, material removal tools, grinders, sanders, polishers, cutting tools, saws, weed cutters, blowers and any power tool having a motor, such as in non-limiting example an inner rotor motor, whether brushed or brushless.

FIG. 20is an embodiment of the cupped flywheel roller drive mechanism. In the example ofFIG. 20, the flywheel ring750is a flywheel ring having flattened contact surface761having the contact surface715which is flattened in shape and which drives a first drive wheel897which drives a second drive wheel898.

FIG. 21is an embodiment of the cupped flywheel702having a flywheel ring750having axial gears. In the example ofFIG. 21, the flywheel ring750is a flywheel ring having axial gears763which drives a gear779.

FIG. 22is an embodiment of the cupped flywheel702having the flywheel ring750which has a flywheel ring grinder portion765.

FIG. 23is an embodiment of the cupped flywheel702having the flywheel ring750which has a flywheel ring saw portion767.

The cantilevered flywheel899can be used in any appliance which can receive power from a flywheel.FIG. 24is an embodiment of the cupped flywheel702having the flywheel ring750which has a flywheel ring fan portion769. The cantilever flywheel899can also be used in appliances such as fans, humidifiers, computers, printers, devices with brushed inner rotor motors, devices with brushless inner rotor motors and devices with motors having outer rotors. The cantilever flywheel899can also be used in automobiles, trains, planes and other vehicles. The cantilever flywheel899can be used in any device having an inner rotor motor.

The scope of this disclosure is to be broadly construed. It is intended that this disclosure disclose equivalents, means, systems and methods to achieve the devices, activities and mechanical actions disclosed herein. For each mechanical element or mechanism disclosed, it is intended that this disclosure also encompass in its disclosure and teach equivalents, means, systems and methods for practicing the many aspects, mechanisms and devices disclosed herein. Additionally, this disclosure regards a motor having a cantilevered flywheel and its many aspects, features, elements uses and applications. Such a device can be dynamic in its use an operation, this disclosure is intended to encompass the equivalents, means, systems and methods of the use of the tool and its many aspects consistent with the description and spirit of the operations and functions disclosed herein. The claims of this application are likewise to be broadly construed.