Abstract: In one embodiment, a robotic manipulator arm includes a robotic joint, a rotational position sensor, and a control system. The rotational position sensor is coupled to the main housing of the robotic joint. The control system is connected to the rotational position sensor. During normal rotational motion toward a commanded motor position of joint output, the control system determines that normal joint un-slipped motion is occurring with respect to the joint output in response to the motor input commands. Responsive to joint slip during commanded motor motion, the control system compares position data from the rotational position sensor to commanded motor position to generate an error value and, based on the error value, compensates for the joint slip.

Abstract: The present invention relates to a propulsion mechanism provided with two independent actuators, the first actuator being connected via a first connection member CD to a first converter ED, RLD mounted on a transmission shaft AT. Further, the second actuator is connected via a second connection member CG to a second converter EG, RLG mounted on the same transmission shaft AT.

Abstract: A printer comprising: a sheet media transport mechanism for transporting sheet media past a printhead; a pick-up roller arranged to be rotated so as to contact and pick-up sheet media from a supply of sheet media and deliver the picked sheet media to the sheet media transport mechanism; and a gear assembly for communicating a driving force of a motor to the pick-up roller so as to rotate the pick-up roller, wherein a first gear of the gear assembly is arranged to disengage from a second gear of the gear assembly substantially at the point of delivery of a leading edge of the picked sheet media to the sheet media transport mechanism so as to cease communication of the driving force of the motor to the pick-up roller.

Abstract: A vehicle drive train for transferring torque to first and second sets of wheels includes a first driveline adapted to transfer torque to the first set of wheels and a first power disconnection device. A second driveline is adapted to transfer torque to the second set of wheels and includes a second power disconnection device. A hypoid gearset is positioned within one of the first driveline and the second driveline in a power path between the first and second power disconnection devices. The hypoid gearset is selectively disconnected from being driven by either of the first driveline and the second driveline when the first and second power disconnection devices are operated in a disconnected, non-torque transferring, mode.

Abstract: A driving force transmission apparatus has a driving gear; a driven gear; a toothed clutch transferring the driving force from driving gear to driven gear and which includes driving-side and driven-side ratchets that are movable in the axial direction of the clutch; and a compression spring biasing driven-side ratchet toward driving-side ratchet. When the tip end of the pawl of the driven-side ratchet is at the same position as the tip end of the pawl of the driving-side ratchet in the axial direction of the toothed clutch, the compression spring biasing force acts on the driven-side ratchet. And when the driven-side ratchet fully engages the driving-side ratchet, the biasing force does not act on the driven side ratchet.

Abstract: A device (1) for transmitting torque from a first shaft (2) to a second shaft (3) of a transmission device, in particular a counter shaft transmission. The device (1) has a first gear (5) supported on the first shaft (2) by a bearing device (4) and which, in an assembled state, engages a second gear (6) arranged on the second shaft (3). The first gear (5) can be shifted into an activated state in which the first gear is connected in a rotationally fixed manner to the first shaft (2). A supporting mechanism (18) is associated with the first gear (5), next to the bearing device (4), via which tilting moments present and acting on the first gear (5), at least in a connected state, are transmitted to and supported by the first shaft (2).

Abstract: A drive apparatus for boarding and unboarding devices, in particular for passenger doors, boarding ramps, retractable steps and the like on public transport vehicles having an electric drive motor the driven element of which is connected to the input element of a first reduction gear the output element of which is coupled to the actuation devices for the boarding and unboarding devices where the drive apparatus is constructed as a compact drive where the electric drive motor, the first reduction gear and a second reduction gears as well as an energizable clutch are disposed axially behind each other inside a tubular housing between the first reduction gear and the second reduction gear.

Abstract: A re-settable mechanical disconnect includes a fixed flange and a retracting flange, each including a plurality of ramped teeth that mate together. The incline of the ramp of each tooth may allow power to be transmitted from the engine to the generator at required speeds and may aid disengagement of the retracting flange form the fixed flange. The mechanical disconnect may be activated in the case of a generator failure and may be re-set and reused once the cause for activation is cleared. An actuator assembly may provide an external force in axial direction that may initiate disengagement and re-engagement of the retracting flange and the fixed flange. The mechanical disconnect may be suitable for, but not limited to, applications in the aircraft and aerospace industries, for example, for disengaging a variable frequency generator from an engine in the case of generator failure thus preventing damage to the gearbox.

Abstract: In a thermally transcribing printer including a frame, a roller shaft, a roller shaft drive gear and a motor, the roller shaft includes one end installed on an inner side of the frame and folded to bend in an L-like shape and other end fitted to a drawout preventing portion in a recess shape of the frame. The roller shaft drive gear includes a hook portion attached to the one end of the roller shaft, engaged with a portion of the roller shaft other than the fold-bend portion disposed a vicinity of the one end of the roller shaft and having an opening width smaller than a diameter of the roller shaft for restraining the roller shaft from being detached in the bended direction, and a pair of rotation preventing ribs for holding to squeeze the fold-bend portion of the roller shaft.

Abstract: A power transmission arrangement includes a shaft, a first gear mounted on the shaft, a plate supported by the shaft and rotatable between a first position and a second position, a second gear supported by the plate and engaged with the first gear, and a third gear supported by the plate and movable between a disengaged position and an engaged position with the second gear when the plate is rotated between the first position and the second position.

Abstract: An electro-mechanical actuator is provided that minimizes back drive effort by de-coupling the internal drive train of the actuator from the actuator output using a clutch. The clutch facilitates transfer of power to an output gear stage when the actuator motor is energized, but disengages the output gear stage when the actuator motor is de-energized. When the actuator output is manually operated, the clutch disengages the output gear stage, thereby reducing the number of gears that must be back driven by the manual actuation.

Abstract: A magnetic recording/reproducing apparatus or an electric apparatus includes a reel gear, an intermediate gear, a swing arm, an idler gear and an input gear. The swing arm, idler gear and input gear constitute an idler mechanism. The intermediate gear is arranged apart from the reel gear. The swing arm is arranged between the reel gear and the intermediate gear. The swing arm is swingable between the reel gear and the intermediate gear around a center axis. The idler gear is attached to the swing arm. The idler gear is continuously kept in contact with at least one of the reel gear and the intermediate gear. The input gear is rotatable about the center axis, and is brought into contact with the idler gear.

Abstract: An actuator including a rotatable gear wheel reversibly drivable by a motor, the gear wheel being operably connectable to an output element by a drive transfer device, the output element being moveable between a first and second position, in which the drive transfer device is operably disconnectable from the output lever to allow independent movement of the output lever.

Abstract: The length adjustment of an expandable rod is attained by a drive gear and a driven gear which is engaged with the drive gear and gear slots of an inner tube of the expandable rod. The inner tube is located inside an outer tube of the expandable rod by a locating member which is provided with a locating projection capable of locating in one of the gear slots of the inner tube.

Abstract: Methods and apparatus are provided for mating a first gear and a second gear, such as those utilized in drive mechanisms of mailing machine modules. A gear frame can mount a first gear on a first annular gear mount. A first end of a link can be pivotally mounted on a fulcrum and a second end can have a second gear mounted on a second annular gear mount. A normal force can be provided on the link in a direction opposing pivotal movement of the link. When the first gear and the second gear are brought together for mating, the link can pivot to allow the first gear and the second gear to mesh. The second annular gear mount can be guided into a channel in the gear frame to secure the second gear in a meshed position with the first gear.

Abstract: Methods and apparatus are provided for mating a first gear and a second gear, such as those utilized in drive mechanisms of mailing machine modules. A gear frame can mount a first gear on a first annular gear mount. A first end of a link can be pivotally mounted on a fulcrum and a second end can have a second gear mounted on a second annular gear mount. A normal force can be provided on the link in a direction opposing pivotal movement of the link. When the first gear and the second gear are brought together for mating, the link can pivot to allow the first gear and the second gear to mesh. The second annular gear mount can be guided into a channel in the gear frame to secure the second gear in a meshed position with the first gear.

Abstract: A rotary printing machine includes a first gearwheel, a second gearwheel, and a setting device for selectively adjusting the second gearwheel into a first position, in which the gearwheels are coupled to one another, and into a second position, in which the gearwheels are uncoupled from one another. The printing machine includes a traction mechanism for securing a staggered-teeth rotary-angle position of the second gearwheel relative to the first gearwheel when the second gearwheel is adjusted into the second position, and a first tension element for tensioning a rotatably arranged traction means of the traction mechanism. The first tension element is loaded by a spring. The traction means is assigned a second tension element, and in the second tension element is mounted so to be a selectively adjustable into a first switching position and a second switching position.

Abstract: A C-axis driving system for machine tools is disclosed that comprises a worm wheel mounted on a spindle that is rotatably supported by a headstock. The C-axis driving system also includes a worm shaft with a worm formed therein directed perpendicular to an axis of the spindle and placed so as to be pivotable about a pivotal shaft between an engagement position, and a disengagement position. The C-axis driving system also includes a C-axis driving motor connected to the worm shaft and serving to rotationally index the spindle to a specified rotational angle. The pivotal shaft is provided on the worm shaft base so as to be directed perpendicular to an axis of the worm shaft. Thus, the C-axis driving system for machine tools is capable of reducing the size of the C-axis unit as well as the cost while allowing a smooth engagement with the worm wheel.

Abstract: A spline connection is provided between a first part and a second part wherein a first set of internal splines is formed on an inner cylindrical surface of the first part and a second set of internal splines is formed on an inner cylindrical surface of the second part. Also included is a connector sleeve having first and second sets of external splines formed thereon. The connector sleeve is slideable between a pre-assembly position located fully within the second part and a fully assembled position in which a section of the connector sleeve is located in the first part and another section is located in the second part so that the first set of external splines engage the first set of internal splines and the second set of external spines engage the second set of internal splines.

Abstract: A packaging system includes a conveyor belt having a carrying surface for carrying an article to be packaged by a package film and an end sealing device including spaced upper and lower sealing blocks between which the article passes. A recessed chamber is formed in the carrying surface by extending the conveyor belt around specially arranged rollers. The end sealing device includes a machine frame slidably supported on rails. A driving system includes a motor and a reciprocating mechanism having an adjustable stroke coupling the machine frame to the motor. The rollers of the recessed chamber are attached to the machine frame to be movable therewith. The upper and lower sealing blocks are movably supported on the machine frame by upright posts with the lower sealing block accommodated in the chamber of the conveyor. Racks extend from the upper and lower sealing blocks with a toothed wheel matingly interposed therebetween for mechanically coupling the sealing blocks together.

Abstract: The disclosure teaches a flywheel power unit that can be inserted into a variety of machines. The standardization of the power unit means that the more expensive gearing, clutch and flywheel components do not have to be duplicated in each human powered machine. Standard bicycle gearing components can be assembled with a modified clutch for a typical motorcycle to create an inexpensive human powered flywheel power unit. As the user pedals, power is stored in the flywheel. The flywheel axle is connected to a transmission transfer gear that turns a transmission input gear for a transmission with multiple gears in a gearing ratio of 10:1 to 0.8:1 (which is typical for a motorcycle transmission.). A transmission input gear and the transmission transfer gear are approximately a 1:1 gearing ratio. A transmission output gear is attached to the transmission that provides power output from the flywheel only when a clutch within the transmission in engaged.

Abstract: A tri-modal—energy storage mode, fail-safe mode, and operating mode—fail-safe actuator with low overall power consumption and specifically low fail-safe power consumption due to energy storage pawling mechanisms. Stored energy is discharged at a controlled rate in fail-safe mode. The actuator's sequencing through its three modes is enabled by a dual-cam/clutch system which is powered separately from the operational (shaft control) system.

Abstract: An apparatus for moving a part, in particular in a motor vehicle, with an adjusting mechanism that has a motor (10), a gear (12), and at least power takeoff part (14) which is operatively connected to the part (16) to be moved, characterized in that the power takeoff part (14) is supported separately from the gear (12).

Abstract: A declutchable manual override gearbox, comprising a casing, and a drive shaft mounted for rotation within the casing. The drive shaft has an input end and an output end, the input end of the drive shaft adapted to engage the output of a rotary actuator and the output end of the drive shaft adapted for attachment to a device or mechanism, for example the drive linkage for a damper valve, to be driven by the actuator. A manual override is provided for manually rotating the drive shaft, the gearbox also including a clutch arrangment for selectively rendering the manual override inoperative. Attachments associated with a base portion of the casing enable mounting of the gearbox on an underlying support stand.

Abstract: A reverse drive for a small vehicle includes a primary driven gear through which an external motor imparts a rotary motion to a first shaft. A worm gear is mounted on and rotates with the first shaft. A worm wheel is mounted on and rotates with a second shaft. The worm wheel engages and is rotated by the worm gear with a gear reduction being effected through engagement of the worm gear and the worm wheel so that the second shaft rotates at a slower speed than the first shaft. A clutch is mounted on the second end of the second shaft, which can be moved between an engaged position and a disengaged position.

Abstract: Driving device for a closing arrangement of a vehicle-tank filler neck, having a housing (1), an input shaft (2), which is intended for the connection of a drive motor (3), an output shaft (5), which is intended for driving the closing arrangement, and a gear mechanism (11, 12) which is arranged in the housing (1) and acts between the input shaft (2) and the output shaft (5), the gear mechanism (11, 12) being a worm wheel/worm mechanism with a self-locking action in the direction from the output shaft to the input shaft, a clutch (13-17) being arranged between the gear mechanism (11, 12) and the output shaft (5), and a manual actuating arrangement (18-24) with a predetermined actuating travel being provided which, over a first part (FIGS. 3b-4b) of the actuating travel, moves the clutch (13-17) into the disengaged position and, over a second part (FIGS. 4b-4c) of the actuating travel, drives the output shaft (5).

Abstract: A ceiling support for an X-ray source with a decouplable tomogram drive, has a transverse carriage suspended so as to be displaceable along a longitudinal ceiling running rail with the tomogram drive. The tomogram drive has a driven gearwheel on the drive shaft of a drive motor which is rigidly secured to the transverse carriage. The tomogram drive has a displacement gearwheel that meshes therewith and that is seated on a rocker which is pivotable around the drive shaft. The rocker can be pivoted by a switchable drive element into engagement with a toothed rack secured to the longitudinal ceiling running rail.

Abstract: A device for the back rounding of book blocks in a book binding machine cooperating with a conveyor device. The device includes a driving arrangement and rounding elements driven in rotation by the driving arrangement. The rounding elements taking up the book block following release of the book block by the conveyor device. The rounding elements acting on both sides of the book block through pressurized rotational movement thereof. When the book blocks are gripped by the rounding elements, the rounding elements may selectively travel in a lifting movement which is separate from the rotational movement into preselectable, defined vertical positions.

Abstract: A device is provided for a system for displacing (e.g. lifting, transporting, lowering, etc.) persons between various positions or areas such as for example between a bed and a chair, a bed and a bathroom etc. The device comprises a winch assembly whereby a reel component and a motor may be decoupled so as to allow for the manual paying out of an elongated flexible support member to facilitate the attachment thereto of a harness holding a person.

Abstract: A process for forming complex microelectromechanical (MEM) devices having five layers or levels of polysilicon, including four structural polysilicon layers wherein mechanical elements can be formed, and an underlying polysilicon layer forming a voltage reference plane. A particular type of MEM device that can be formed with the five-level polysilicon process is a MEM transmission for controlling or interlocking mechanical power transfer between an electrostatic motor and a self-assembling structure (e.g. a hinged pop-up mirror for use with an incident laser beam). The MEM transmission is based on an incomplete gear train and a bridging set of gears that can be moved into place to complete the gear train to enable power transfer. The MEM transmission has particular applications as a safety component for surety, and for this purpose can incorporate a pin-in-maze discriminator responsive to a coded input signal.

Abstract: An accessory gear drive for gas turbine engine utilizes a radially extending, floating tower shaft which is unrestrained against radial movement, but includes a resilient biasing means for normally holding the tower shaft in power driving interengagement between the central drive shaft of the engine and an external accessory gear box. For engine maintenance, the tower shaft may be readily accessed and shifted radially outwardly by compressing the biasing means in order to facilitate easy engine disassembly and assembly.

Abstract: A fishing reel attachment for use on a rod-and-reel combination. The attachment includes an electric motor which is selectively usable to replace or assist the hand crank for the reel. The device is particularly adapted for use by an individual having the full use of only one hand.

Abstract: A system for use in a press machine includes a drive assembly in the form of a pinion gear that selectively engages the flywheel to enable operative driving rotation of the pinion gear by the flywheel. A load system in the form of a hydraulic pump is arranged in operative driving relationship with the pinion gear. Accordingly, rotational energy withdrawn from the flywheel becomes available for use in driving the hydraulic pump, which is preferably arranged in fluid communication with the press machine to supply a flow of oil for lubrication purposes. An adjustment assembly is arranged to controllably reversibly displace the pinion gear to effect its selective engagement with the flywheel. The pinion gear is provided with a geared peripheral surface for intermeshing engagement with the flywheel at a geared periphery thereof. The system may also be operated in reverse to drive the flywheel.

Abstract: A vertical/horizontal spindle head for machine tools having a main transmission shaft with a first bevel gear secured thereon, a lower rotatable housing having a bevel gear axle secured therein, an upper seat having a push/pull apparatus for axially moving the lower rotatable housing relative to the upper seat, a main shaft having a second bevel gear secured thereon, third and fourth bevel gears coaxially arranged on the bevel gear axle, and a curved coupling between the upper seat and the lower rotatable housing. Between the third and fourth bevel gears are springs to move the third bevel gear axially and maintain it in engagement with the first bevel gear. A slidable spline device is provided between the third bevel gear and the bevel gear axle. The slidable spline device is disengaged in a first position where the curved coupling is coupled and is engaged in a second position when the lower rotatable housing is pushed away from the upper seat by the push/pull apparatus and the curved coupling is uncoupled.

Abstract: A selectively engageable motor-drive assembly operable for moving a vehicle door or ramp to enable manual operation or motorized operation is provided, having a motor, a pulley drawing a cable attached to the door or ramp, a torque-multiplying arrangement positionable between a fully-engaged position and a partially-disengaged position, and an actuator mechanism for positioning the torque-multiplying arrangement in accordance with a selection of manual or motorized operation. The actuator mechanism may be actuated by a solenoid that is activated by an operator through a control unit. Also, a cam may be provided to define the movement of the actuator mechanism.

Abstract: A device for mechanically disengaging and re-engaging a driven axle from a hydraulic transmission allows the driven axle to "free wheel" independently. In normal operation, a set of internal splines on an end of a rotor is engaged with splining on an end of a hollow coaxial drive train shaft, the rotor and drive train shaft held in rotational engagement by the biasing force of a spring. A pin, positioned coaxially within the hollow center of the drive train shaft and having one end bearing upon the rotor, can be externally moved to overcome the biasing force and disengage the rotor from the drive train shaft. Once the external force moving the spring is removed, the set of internal splines and splines are re-engaged.

Abstract: An improved wheelchair wheel and hub assembly is described that interposes reduction gearing between the handring or rotatable hand wheel and the drivewheel of the assembly. This gearing provides some mechanical advantage to users who may lack sufficient strength to propel themselves in a conventional wheelchair, especially in a home environment. A single speed assembly is described which is operated conventionally by rotating handrings either forward or rearward to produce a corresponding rotation of the drive wheel but, unlike conventional wheels, a complete revolution of the handring results in only a partial revolution of the drive wheel. In the hub of the assembly is a wheel locking mechanism which enables the wheel to be easily and positively locked for the safety of the user, preventing rotation of the wheel in either direction. Additionally, a ratcheting mechanism is incorporated into the hub design which can be engaged to allow forward rotation but prevent rearward rotation of the drive wheels.

Abstract: A transmission unit mounted on the machine base of an office automation machine and covered with a cover and controlled to turn a first roller and a second roller, including a gear transmission mechanism, a first roller transmission mechanism driven and a second roller transmission mechanism respectively driven by the gear transmission mechanism to turn the rollers, wherein the gear transmission mechanism includes a motor, a rounded seat raised from the machine base, a drive gear mounted on the rounded seat and coupled to the motor, an annular gear holder revolvably mounted around the rounded seat and having an upright gear shaft, an upright axle raised from the machine base adjacent to the rounded seat, a crank having a pivot hole at one end coupled to the upright axle and a gear shaft at an opposite end, a first planet gear revolvably mounted around the gear shaft of the crank and driven by the drive gear to turn the first roller transmission mechanism, a second planet gear revolvably mounted around the gea

Abstract: A gear box assembly for automatically engaging and disengaging an output gear which is non-rotatably concentrically mounted on a driven axle shaft attached to plural wheels in a children's ride-on toy is described. The assembly includes an electric motor with a pinion driving plural driven gears, and a yoke which is pivotable between two positions and provides a mount for at least one of the plural driven gears. In one position, the yoke pivotally engages the output gear and drives the vehicle's wheels, and in another position, the yoke pivotally disengages the output gear thereby allowing the vehicle's wheels to freely rotate without driving or back-driving the motor or other gears. In the preferred embodiment, the yoke is counterbalanced for rotation about a defined axis. In alternative embodiments, the yoke includes a friction member for developing friction between one of the driven gears to rotate the yoke into engagement.

Abstract: A child's riding vehicle employing a unique and novel gear assembly and engagement structure includes a frame having plural wheels, and a gear assembly fixed on the frame which includes an output gear non-rotatably connected to at least one of the vehicle's wheels. A motor on the frame is mounted on an arm which is movable between an engaged position and a disengaged position, and a segment gear mounted on the frame adjacent the gear assembly engages the motor's pinion and defines a path between the engaged and disengaged position. Unique and novel gear tooth profiles are employed in both the gear assembly and the engagement structure to prevent the same from jamming during transition between the engaged and disengaged positions and vice versa.

Abstract: A switch machine for railroad tracks is provided having a low vertical profile without increasing the axial length of existing switch machines. Also, the capability of being operated by an electric motor, hand crank or hand throw operation has been retained within these new dimensional constraints. A particular electric motor and gearbox combination permits a low overall profile due to its compact size. A worm gear shaft serves the dual purpose of driving a worm wheel and coupling to a hand crank, thus maintaining the low profile while increasing the functionality of the shaft. In addition, a hand throw drive shaft is provided adjacent to a crank drive shaft in order to provide a hand throw operation while further maintaining the low profile of the switch machine.

Abstract: A rotating and driving system for a survey instrument, wherein a driven wheel is mounted on a shaft of a movable unit and a slide baseplate is disposed on the shaft so as to be movable in a direction perpendicular to the axis of the shaft. A gear, driven by a motor, is mounted on the slide baseplate in such a position that the gear can be engaged with the driven wheel when the slide baseplate is pushed in the proper direction. By providing engaging force between the driven wheel and the gear, backlash is suppressed, and positioning can be achieved at higher accuracy.

Abstract: In cooperating cylinders, in particular cylinders of a printing mechanism which are in a drive connection via gear wheels and form a feed gap, at least one of the gear wheels is formed by a toothed rim and a wheel body which are connected with one another in a positive engagement via an overload coupling.

Abstract: A differential power transmission device used for digital audio tape recorders and video cassette tape recorders. The device comprises a connecting gear adapted to move vertically for selectively engaging with a driving pulley gear, so as to selectively transmit the rotation force of the pulley gear to a driven gear. A vertical pivot member is provided for vertically moving the connecting gear so as to engage it with the pulley gear, so that the driven gear is driven by the rotation force of the pulley gear transmitted via the connecting gear. With this arrangement, the rotation force of the pulley gear can be more surely transmitted to the driven gear, without any malfunction.

Abstract: The invention involves a machine, e.g., a walking dragline having a drive gear, a driven member which loads (and wears) gear teeth unequally and an interconnecting shaft. The quill-mounted gear is separately supported by bearings. The shaft can be moved axially and when so repositioned, it is also separately supported by other bearings. When the gear needs to be "indexed," (due to unequal tooth wear) the shaft is moved axially out of connection with the gear but remains connected to the eccentric. The gear can then be indexed using its drive motor and the shaft can be re-engaged with the quill without the necessity of auxiliary lifting equipment and without disengaging the shaft from the eccentric.

Abstract: A drive mechanism for a motor vehicle windshield wiper device has a crank which is driven in a rotating manner and produces a pivoting movement of a windshield wiper via a drive rod. If the movement of the windshield wiper is obstructed by a snow wedge building up in the wiper socket, the drive mechanism provides for an obstruction evading movement of the drive rod in such a way that the crank can fully rotate unimpeded. In order to obtain a low loading of the drive rod and its joints in the event of obstruction of the windshield wiper and to obtain a uniform wiping zone in normal wiping operation, the novel drive mechanism for the drive rod is firmly coupled to the crank and a lost motion drive means is arranged on the wiper shaft.

Abstract: In the preferred form a locking plate comprises a small rigid sheet of metal having a longitudinal axis of symmetry along which a generally rectangular central aperture extends. The central aperture has transversely opposed internal side edges and longitudinally opposed arcuate end edges. The central aperture defines a pair of spaced apart longitudinal side straps bent upwardly from the plane of the locking plate and a pair of spaced apart transverse arcuate end bases. Each base plate is formed with an arcuate slot with the slots having a common center of curvature located at the axis midpoint and subtending a predetermined central angle. The central aperture internal side edges juxtaposed diametrically opposite side flanks of the hex-head enabling a fastener to be received in each arcuate slot and an underlying one of a pair of diametrically opposed threaded bores so as to lock the hex-head in its tightened position.

Abstract: An engaging lever lock for rotor turning gear in a steam turbine includes a selectable lock that is disposed to hold the lever at its engaged position and control circuitry for activating the selectable lock. With a first embodiment, the selectable lock includes an electromagnet. On the other hand, with a second embodiment, the selectable lock includes a plunger-pin arrangement that is activated by a solenoid to extend into a hole formed in the lever, and is biased toward a retracted position away from the hole by a spring which is disposed around the pin between the plunger and the solenoid.

Abstract: An apparatus for transmitting the turning force of a capstan flywheel for video cassette recorders by which the turning force of the capstan flywheel driven by a capstan motor is transmitted to the reel disk selectably at high speed and low speed. The apapratus includes a slider gear provided with a clutch gear slidably mounted to a shaft and located between the capstan flywheel having a geer portion and a connector gear. The shaft is moved up and down by mean of a slider lever which is interlocked with a clutch lever pivotally mounted by a pinch lever.

Abstract: A turning gear apparatus mounted adjacent the bull gear of a large turbomachine rotor has a carriage pivotably mounted to the frame, a first pinion rotatably mounted on the carriage, and a second pinion continuously engaging the first pinion and rotatably mounted to the frame coaxial with the carriage pivoting axis. The improvement comprises locating the carriage on the side of the bull gear where it rotates in an upward direction, with the axis of the second pinion located such that when the carriage is pivoted and the first pinion engages the bull gear, the axis of rotation of the first pinion is located on a selected angle below the horizintal substantially equal to the pressure angle of the bull gear tooth, resulting in substantially vertical reaction forces.