Abstract: Disclosed herein are surgical impact tools and methods of use thereof. The surgical impact tools can include a roller assembly, an impact structure, and a tool holder. The roller assembly can be connected to a motor and include a plurality of rollers supported by a respective roller arm. The impact structure can define a spring and an impact cavity including forward and reverse impact surfaces. The impact structure can include a wall comprising a plurality of thread elements connected to the wall and engageable with the roller assembly. Each of the thread elements can include a pair of helical end surfaces and a pair of axially extending surfaces that are engaged by the plurality of rollers. During use rotation of the roller assembly against the helical ends of the thread elements can cause axial movement of the impact structure to apply a load on the spring and generate impact forces.

Abstract: Engines operating using multiple, different types of fuel are described. The engines may include components that control the introduction of fuels and/or reduce premature pre-ignition of fuels, such as a fuel comprising a percentage of hydrogen. The described hydrogen-fueled engines have a reduced carbon footprint.

Abstract: A vibratory tamping machine for compacting a ballast bed of a track has a vibration mechanism which is driven by means of an electric drive motor. The vibratory tamping machine has a vibration decoupling device, which defines a decoupling plane and separates a working side from an operating side, for the vibration-decoupling of at least one handle. The handles are arranged on the operating side, whereas the electric drive motor and the vibration mechanism are arranged on the working side.

Abstract: Electronic spindle lock for a power tool. One embodiment provides a power tool including a housing, a bit receiving portion provided on the housing for receiving a power tool bit, a motor within the housing configured to rotate the bit receiving portion, and a controller coupled to the motor. The controller is configured to enter an electronic spindle lock mode, and detect rotation of the bit receiving portion in a first direction. The controller is also configured to control motor to rotate in a second direction in response to detecting rotation of the bit receiving portion in the first direction.

Abstract: A stabilizer bar has a first connected position and a second disconnected position. One side-bar is fixed to a housing while the other side-bar is fixed to a tulip within the housing. The housing has a plurality of axial grooves. The tulip defines a plurality of slots which are aligned with the grooves when the vehicle is level. A nut has a plurality of pins that extend radially such that the nut is torsionally coupled to the housing. In a first connected position, the pins fit within the slots of the tulip to torsionally couple the nut and the housing to the tulip. To facilitate a second disconnected position, a motor driven actuator moves the nut axially such that the pins no longer engage the slots. When motor power is withdrawn, a spring pushes the nut back to the first connected position.

Abstract: A swash plate compressor has bosses on the inner faces of the bridges of its pistons that contact the outer face of the swash plate only between the edges to eliminate wear at the edges and to thereby increase the life of the compressor.

Abstract: Systems, instruments, and methods for operating a surgical instrument. The methods comprising: receiving at least a portion of an external object in a recess of a hollow shank; rotating a first shaft disposed within the hollow shank; using rotation of the first shaft to cause translational movement of a second shaft of the surgical instrument in a first direction away from the first shaft and along a central axis of the surgical instrument; applying a pushing force on the external object using the second shaft that is experiencing the translational movement; and causing translational movement of the second shaft in a second direction opposed from the first direction after the pushing force has been applied to the external object.

Abstract: Embodiments of the invention provide a pump assembly for a hydraulic tool. The pump assembly can include a reciprocating element that is configured to move between a retracted position and an extended position, a cam surface in the reciprocating element that can engage cam followers, a rotating element that can receive rotational input, and a base that can at least partially surrounds the rotating element. Movement of the cam followers along the cam surface can move the reciprocating element from the retracted position to the extended position.

Abstract: A clutch structure that includes a motor to directly drive a rotary disc of an actuation unit, and the actuation unit further directly act on a push unit, so as to achieve reduction of size. Further, the push unit has a spring holder that drives a push bracket to press against a clutching unit, and the push bracket and the clutching unit are rotatably in synchronization with each other and a group of balls is arranged between the push bracket and the spring holder, such that smooth rotation can be maintained even during the process of pressing to thereby effectively reduce pause and setback incurring in coupling and connection and also to efficiently establish a transmission clutching force to have the operability not affected by the delay.

Abstract: A compact drive unit is predominantly intended for traction vehicles, especially for rail vehicles. This invention allows significant reduction of volume and weight of drive units. The drive unit comprises high-speed electrical motor (1) with passive cooling, which is supplied by power electronics converter (2), whose rotor is supported by bearings (3) along with pinion gear (4) of the input spur/helical gear (5). The output shaft (6) of the gear (5) is a part of the next following gear (7). Output shaft of this gear (7) can be connected either directly or by using the coupling (12) to the axle (8) of the traction vehicle, or to the wheel (9). Alternatively, in case the higher transmission ratio is required, it can be connected to another gears (10), where the output shaft of the gears (10) is connected to the wheel (9), or to the axle (8) of the traction vehicle directly or by using the coupling (12). The drive unit can be equipped with brake (13).

Abstract: A tool bit assembly can include a housing comprising a channel at least partially extending into the housing, one or more interacting features in the channel, and a shaft configured to fit within a drill chuck to allow a drill to turn the shaft. The shaft can be at least partially disposed within the channel to rotate and slide relative to the housing. The shaft can include a striking structure configured to interact with the one or more interacting features in the channel to cause the housing to actuate linearly relative to the shaft if the shaft is rotated relative to the housing and the striking structure is positioned to interact with the one or more interacting features.

Abstract: A surgical circular stapler has a body, shaft, a stapling assembly, a motor, a cam assembly, and a firing assembly. The shaft extends distally from the body. The stapling assembly is secured to a distal end of the shaft. Longitudinal translation of the firing assembly causes the stapling assembly to drive a plurality of staples in a circular array to secure two lumens of tissue together. The stapling assembly may further drive a blade to sever any excess tissue interior of the circular array of staples. The motor is operable to rotate the cam assembly. Rotation of the cam assembly causes longitudinal translation of the firing assembly. A single rotation of the cam assembly is operable to drive the firing assembly from a proximal position to a distal position and back to a proximal position.

Abstract: A shiftable shaft connector that has a sliding sleeve that can be displaced axially between an engaged position and a disengaged position, a shifting gear (6) with a shifting contour (11) that is connected in an axially fixed manner to the sliding sleeve and can rotate in relation thereto, at least one support element corresponding to the shifting contour (11), and an actuator for rotating the shifting gear (6), in which the shifting contour (11) has a release stop (14) assigned to the disengaged position, and an engagement selection stop (15) and an engagement stop (16) assigned to the engaged position, a method for shifting such a shaft connector, wherein the shifting gear (6) is rotated in a releasing direction in order to displace the sliding sleeve into the disengaged position, until the at least one support element reaches the release stop (14) of the shifting contour (11), and is rotated in an engagement direction in order to displace the sliding sleeve into the engaged position of the shifting gear (6

Abstract: A cutting tool includes a housing, a head assembly disposed on the housing and carrying a first blade. A cam drive mechanism is disposed within the housing. The cam drive mechanism carries a second blade opposed to the first blade. A motor drives the cam drive mechanism. A battery pack is electrically connected to the motor. The cam drive mechanism moves the second blade towards the first blade, so that a wire disposed between the first and second blades receives a cutting force of less than 12 kiloNewton. The cam drive mechanism may include a spindle driven by the motor, a radial cam fixed to the spindle, a roller assembly contacting the radial cam, and a shuttle connected to the roller assembly, the shuttle being movable in a reciprocating motion and carrying the second blade.

Abstract: A linear actuator for driving an actuating member of an internal combustion engine of a motor vehicle, the linear actuator having two rolling bearings for scanning mutually opposing sides of a rib that is formed as a guide curve. The rib has a variable width, against which the two sensing bodies are biased to reduce or eliminate undesired reaction forces.

Abstract: The invention relates to a cam engine used in different field of the mechanical engineering, as internal-combustion engines, compressors, pumps etc. The cam engine comprises cylinders (26) with pistons (25), cylindrical tubular 3D cam (20) having a cam groove on the inner cylindrical surface and at least two asynchronously moving followers (1a and 1b) with arms (37) having main and additional rollers (3, 5).

Abstract: An axial cam with a plurality of followers mounted within its diameter drives the followers in both axial directions. The followers operatively actuate valves such as those of an internal combustion engine. The cam can be driven about its exterior perimeter, providing an axially compact embodiment. The phasing of select followers can be established by modifying the azimuth positions of those followers with the cam in operation. By providing the cam with a symmetric actuating profile its followers can be linked to alternately actuate same-function valves in different engine cylinders.

Abstract: A rotary drive member includes a longitudinal axis defining a length direction, a curved cam contact surface forming a closed contour around the longitudinal axis and extending in the length direction and a reciprocating member having a carrier movable in the length direction. At least one cam follower wheel is rotatably mounted on the carrier via a cam follower axis that extends in a direction transverse to the length direction. The wheel has a wheel contact surface engaging with the cam contact surface for rolling along the cam contact surface and driving the cam contact surface in rotation around the longitudinal axis. The cam follower axis is oriented at an angle ? with respect to the transverse direction for removing play between the wheels and the cam surface and preventing of jamming. In the event of axial loads on the rollers, no radial forces will be induced on the carrier.

Abstract: Methods and systems for micro transmissions for a micro machine may comprise an input shaft assembly coupled to a micro actuator, an output shaft assembly coupled to a micro shaft, and one or more power conversion elements operable to convert a first type of movement from the micro actuator into a second, disparate type of movement for the micro shaft.

Abstract: A preload unit module, which has at least one ramp disk and a cage, which carries a plurality of rolling bodies that are held axially against one another in a positively locking fashion. The cage is rotationally pivotable relative to the at least one ramp disk.

Abstract: An object of the present invention is to provide a compact motion conversion transmission apparatus which can set the transmission characteristic for motion or force as desired over a wide range. The apparatus includes input, intermediate, and output members which are fitted to one another while being aligned with an axis and move in relation to one another while being aligned with the axis. Further, the apparatus includes first transmission means which converts a first motion of the input member to a second motion and transmits the second motion to the intermediate member, the first motion being one of a rectilinear motion along the axis and a rotary motion about the axis, and the second motion being the other of the rectilinear motion along the axis and the rotary motion about the axis; and second transmission means which converts the second motion of the intermediate member to the first motion and transmits the first motion to the output member.

Abstract: A vibrational tool with tool axis rotational mass and method is disclosed, which may be utilized to assist in lowering a drill string into a wellbore. A reciprocating member and rotatable mass are mounted within a vibrational tool housing. A plurality of curved passageways are positioned to induce rotation in response to fluid flow through the tool housing. As the rotatable mass rotates, a mechanical interconnection causes the reciprocating member to reciprocate, and results in vibrational forces for moving a bottom hole assembly.

Abstract: A vibrational tool and method is disclosed, which may be utilized to assist in lowering a drill string into a wellbore. In one embodiment, a reciprocating member and a symmetrical rotating member are mounted within a vibrational tool housing. The reciprocating member is urged in one embodiment by a spring assembly toward the rotating member whereby engagement surfaces on the reciprocating member and rotating member encounter each other. As the rotating member rotates, variable surfaces on the engagement surface cause the reciprocating member to reciprocate as the variable surfaces follow or cam with respect to each other during rotation. The resistance to rotation by engagement surfaces and spring assembly, and mass of the rotating member, result in vibrational forces, when drilling fluid flows through the vibration tool housing.

Abstract: Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a main axle is adapted to receive a carrier assembly to facilitate the support of components in a CVT. In another embodiment, a carrier includes a stator support member and a stator interfacial member. In some embodiments, the stator interfacial member is configured to interact with planet subassemblies of a CVT. Various inventive planet subassemblies and idler assemblies can be used to facilitate shifting the ratio of a CVT. In some embodiments, the planet subassemblies include legs configured to have a sliding interface with a carrier assembly. Embodiments of a hub shell, a hub cover are adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces and braking features for a CVT are disclosed.

Abstract: A loading machine for feeding a receiver includes, but is not limited to, a drum cam that is configured to rotate. The drum cam includes, but is not limited to, a first cam path, and a second cam path. A rammer subassembly is positioned proximate the drum cam. The rammer subassembly includes, but is not limited to, a first member that is configured to engage the first cam path and to move longitudinally with respect to the drum cam upon a rotation of the drum cam, and a second member that is configured to telescopically engage the first member and further configured to engage the second cam path and telescopically move with respect to the first member upon the rotation of the drum cam.

Abstract: A lifting mechanism includes a lifting member, a first magnetic member, a rotating arm, a second magnetic member and a resilient member. The lifting member is pivoted to a first casing. The first magnetic member is fixed on the lifting member. The rotating arm is pivoted to a second casing. The second magnetic member is fixed on the rotating arm for attracting the first magnetic member as being rotated with the rotating arm to where the second magnetic member is aligned with the first magnetic member, so as to retract the lifting member inside the first casing. The resilient member resiliently abuts against the second casing and the lifting member for pushing the lifting member as being rotated with the rotating arm to where the second magnetic member is not aligned with the first magnetic member, so as to expand the lifting member out of the first casing.

Abstract: A system for controlling a transmission throttle valve allows the transmission response to be correlated with changes in engine torque. The apparatus described herein solves the problem of older vehicles which utilize a fuel management device having a throttle lever that contains no ready attachment point for a throttle valve control device. The apparatus includes an eccentric mount which is installed on the rotatable throttle member of a the management device. The eccentric mount is positioned so as to have an axis of rotation nominally aligned with the axis of rotation of the throttle shaft. An eccentric having an attachment point for a throttle valve cable is installed on the eccentric mount, establishing a fixed mechanism so as to correlate the rate of the transmissions throttle valve travel via displacement of the cable as the throttle member rotates the eccentric.

Abstract: An ice pusher is provided. The ice pusher incorporates a cam and a linear actuation arrangement for removing ice from an evaporator plate of an ice-making machine. The cam provides a helix shaped ramp structure having a cam surface. The linear actuation arrangement has an input end and an output end. The input end is in slidable contact with the cam surface such that the linear actuation arrangement linearly moves relative to the housing upon rotation of the cam to effectuate the removal of ice from the evaporator plate.

Abstract: A prestressing unit which has a first ramp disk and a second ramp disk. Ramp contours are formed in one side of an annular face of the ramp disks. In the prestressing unit, the rolling bodies ascend and/or descend on the ramp contours as a result of rotational pivoting of one of the ramp disks in relation to the other ramp disk about an axis. The ramp contours are each formed as a single-part running face for the rolling bodies. The running face is inclined with respect to the axis.

Abstract: An axial piston pump has: a cylinder body that forms therein a cylinder chamber extending in an axial direction of a drive shaft and rotates integrally with a driven shaft; a piston that reciprocates in the axial direction of the drive shaft; and a cam device that rotates integrally with the drive shaft and has: a fixed cam member that has a cam surface capable of coming into contact with a cam follower coupled to the piston and is capable of rotating integrally with the drive shaft, with movement of the fixed cam member in the axial direction being restricted; and a movable cam member that has a cam surface capable of coming into contact with the cam follower and is capable of rotating integrally with the drive shaft, with movement of the movable cam member in the axial direction being allowed, irregularity differences in the axial direction of the cam surface of the fixed cam member and the movable cam member being different from each other.

Abstract: A push & lock unit includes cam sections mounted on an outer wall of a rotary body that is disposed on an underside of an operating body, and each one of the cam sections contacts a saw-tooth section disposed on a lower end of a rib on an inner wall of a cover and a projection disposed at a bottom center of a housing in response to an up and down movement of the operating body, whereby the rotary body is rotated. When the operating body is pushed, a push face thereof is locked at a position almost flush with an outer face of a panel. When the operating body is pushed once more, it is released from the lock, and restores to a state where the operating body projects from the outer face of the panel.

Abstract: This invention concerns an aircraft cargo loader for lifting cargo and freight onto and off an aircraft or plane by the loader comprises a longitudinal deck platform; a supporting assembly extending under the platform for supporting and moving the deck platform between a raised position and a lowered position; and an adjusting mechanism installed in connection with a front transverse shaft of the supporting assembly for transversally tilting the platform between a first tilt angular position where one of the longitudinal side of the platform is tilted with respect to the other longitudinal side; a neutral angular position; and a second tilt position where the other longitudinal side of the platform is tilted with respect to said one longitudinal side. The loader also comprises an actuator to actuate the rotational movement of the front transverse shaft.

Abstract: Mechanisms and methods for clamping force generation are disclosed. In one embodiment, a clamping force generator includes a spring coupled to a traction ring and to a load cam roller cage. The traction ring can be provided with a recess to receive the spring. In some embodiments, a relatively short spring is provided. In other embodiments, a spring couples to a wire and the spring-wire combination couples to the traction ring and the load cam roller cage. In some embodiments, the load cam roller cage is provided with tabs adapted to engage the wire and/or the spring. In yet other embodiments, the traction ring is configured to receive a dowel pin for coupling to the spring. One or more of the tabs can include a tab notch that cooperates with a stop pin coupled to the traction ring to provide adjustment of the travel of the load cam roller cage.

Abstract: A hand-held power tool includes a motor-driven percussion mechanism. The percussion mechanism includes a guide tube (21) and a reciprocating driving member (22) displaceable in the guide tube (21) for driving, via a gas spring, an impact member (23) likewise displaceable in the guide tube (21). The percussion mechanism further includes a motor-driven eccentric wheel (17) rotatable about an axis (D) which is spaced from the percussion mechanism axis (S) in a direction perpendicular to the percussion mechanism axis (S) by a distance (X). A connection rod (29) is eccentrically supported on the eccentric wheel (17) and connected to the driving member (22) for converting a rotational movement of the eccentric wheel (17) into a reciprocating movement of the driving member (22).

Abstract: One embodiment of the horsepower amplifier module (FIG. 2) proofs the usefulness of a new approach to mechanical interventions. Mechanical advantage principles and the laws of leverage are fully exploited to increase energy efficiency while operating any horsepower producing means. Newly designed pressure ring (60), and pressure ring (61), are mounted respectably on rotary assemblies (FIG. 2B) and (FIG. 2C). Rotational energy applied to assemblies prompts the lateral displacement of components (60) and (61). A more powerful force is created and is directed to collector (78). Multiple modules supplying energy to same shaft (as shown in FIG. 3) offer a variety of options for effective operation of adopted application. A second embodiment (FIG. 4) is described as a possible arrangement available to enhance the overall capabilities of the horsepower multiplier module.

Abstract: A low pressure fluid powered motor or pump comprises a non-rotatable cover (k); an undulating lobe cam track (e) attached to the cover (k) and defining multiple crests and troughs; a rotatable cylinder block (c); at least three reciprocating pistons (d) each housed within a bore of the cylinder block (c) and each providing at one end a crown (d1), and at the other end a spherical seating cup (d2); a ball (f), adapted to engage with the cam track (e); a non-rotatable manifold block (n) incorporating a plurality of ports (s), each being radially disposed at equal intervals in an end face of the manifold block adjacent the pistons (d), with the ports (s) linked to galleries connected to a higher pressure delivery circuit, and a lower pressure return circuit, with the angular arrangement of the ports (s) being such that the higher pressure is supplied to the crown (d1) of each piston (d) only while the piston (d) is moving from a crest to a trough of the cam track (e), with a switch to the lower fluid pressure ci

Abstract: To enable a pedal system equipped with an actuator to reduce power consumption and put a pedal at an appropriate position when there is no need to operate the pedal. A system state control unit changes pedal position to an end position or original position before deactivating the pedal system. It deactivates the pedal system based on information from a pedal position detection unit, pedal state detection unit, power supply state detection unit, and vehicle motion detection unit and activates the pedal system based on information from a power supply state detection unit. It shifts pedal position toward the original position after activation of the pedal system.

Abstract: Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a main axle is adapted to receive a shift rod that cooperates with a shift rod nut to actuate a ratio change in a CVT. In another embodiment, an axial force generating mechanism can include a torsion spring, a traction ring adapted to receive the torsion spring, and a roller cage retainer configured to cooperate with the traction ring to house the torsion spring. Various inventive idler-and-shift-cam assemblies can be used to facilitate shifting the ratio of a CVT. Embodiments of a hub shell and a hub cover are adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces and braking features for a CVT are disclosed.

Abstract: A rotational to linear displacement conversion mechanism comprises: an assembly including a plurality of driver discoidal elements and a plurality of driven discoidal elements mounted alternately on a common central axis to form an interleaved stack. Each discoidal element has a ramped surface, the ramped surfaces of adjacent elements being complementarily shaped and opposed so that, when in contact and completely interengaged, they form a stack of minimum length. A coupling means is provided for coupling the driver discoidal elements for rotation together about the axis by an externally applied force while permitting them to translate along the axis. The driven elements are mounted in such a way as to permit translation along the common axis while preventing rotation of the driven elements about the common axis.

Abstract: A latch including a housing, a rotary pawl, catch means for releasably holding the pawl in a closed configuration, and means for operating the catch means are disclosed.

Abstract: Disclosed is a high-durability cam wheel assembly, which includes a fixed member, which has a center axle hole and one pair of first interference members symmetrically disposed at one side thereof, and a movable member, which has a center mounting hole axially aimed at the center axle hole of the fixed member, a pair of guide axially symmetrically extending from one side of the periphery of the center mounting hole and inserted into the center axle hole of the fixed member for guiding rotation of the movable member relative to the fixed member, and a pair of second interference member arranged on one side thereof around the guide rods and the center mounting hole and disposed in contact with the first interference members of the fixed member for causing a torsional force upon rotation of the movable member relative to the fixed member through an angle.

Abstract: Provided is a motion converter which comprises a housing, a cam plate reciprocal to the housing, a lower link and an upper link. The cam plate has a groove which extends diagonally across the width thereof. The lower link is pivotably mounted to the housing and has a cam pin and a slot formed at a free end thereof. The cam pin is engageable to the groove of the cam plate. The upper link is also pivotably mounted to the housing in offset relationship to the lower link. A free end of the upper link has a link pin which is engageable to the slot. The motion converter is configured such that the lower link pivots in response to slidable movement of a cam pin within the groove during reciprocation of the cam plate. The upper link is configured to pivot in response to the slidable movement of the link pin within the slot during pivoting in a lower link.

Abstract: An axial piston pump has: a cylinder body that forms therein a cylinder chamber extending in an axial direction of a drive shaft and rotates integrally with a driven shaft; a piston that reciprocates in the axial direction of the drive shaft; and a cam device that rotates integrally with the drive shaft and has: a fixed cam member that has a cam surface capable of coming into contact with a cam follower coupled to the piston and is capable of rotating integrally with the drive shaft, with movement of the fixed cam member in the axial direction being restricted; and a movable cam member that has a cam surface capable of coming into contact with the cam follower and is capable of rotating integrally with the drive shaft, with movement of the movable cam member in the axial direction being allowed, irregularity differences in the axial direction of the cam surface of the fixed cam member and the movable cam member being different from each other.

Abstract: A multiple-stroke hydrostatic axial piston machine has a plurality of piston-shaped displacement bodies (13) that can each move longitudinally in a displacement chamber (12) and are each supported by a roller body on a track (9) that is provided with axial cams (10) that generate a reciprocal motion. Each of the roller bodies is a roller (14) which is located in a recess (A) of the displacement body (13) that restricts radial and axial relative movements of the roller (14) with respect to the displacement body (13). The displacement body (13) can be configured as a cage of the roller (14).

Abstract: An axial adjusting device comprising two discs which are rotatable relative to one another, which are supported coaxially relative to one another and between which there are guided balls in pairs of ball grooves whose depth varies across the circumference. Of the discs, one is axially supported and one is axially displaceable against resilient returning forces of spring means. At least one of the discs is rotatingly drivable by a driving motor. For load reducing purposes, at least two balls are guided in each of the pairs of ball grooves.

Abstract: Under one aspect of the present invention, a liquefied gas pump assembly is coupleable to a source of liquefied gas. A cooling assembly is positioned generally adjacent to a pump module. The cooling assembly has a converging pump-head-receiving aperture, a fluid inlet line and a fluid outlet line in fluid communication with the source of liquefied gas and in fluid communication with the pump-head-receiving aperture. A pump head assembly is removably retained in the pump-head-receiving aperture so that a portion of the cooling assembly is between the pump head assembly and the pump module. The pump head assembly has a converging shape and being sized to engage the cooling assembly in a wedged configuration when the pump assembly is in an installed position in the cooling assembly. The pump head assembly has a fluid inlet pathway abutting in sealable engagement with the fluid inlet line of the cooling assembly.

Abstract: An advancing/retracting mechanism having a pair of cams is disclosed. The advancing/retracting mechanism includes a first cam, a second cam, and a barrel. The first cam includes an angled surface and a shoe, and the second cam includes an angled surface and a slider. The shoe engages with a helical surface in the barrel, and the slider engages with a straight surface in the barrel. The first cam travels a first distance along the longitudinal axis of the barrel from a first to a second state, and the second cam travels a second distance that is greater then the first distance along the longitudinal axis of the barrel from the first to the second state.

Abstract: A medium pump for a motor includes a pump case with a pump cylinder and a pump piston positioned displacaebly in the pump cylinder in the direction of a pump axle. The pump piston rotates about the pump axle by running off an oblique control surface and realizes axial pump movements against the pressure of a first spring. A pump lift adjusting device is removably positioned in a guide placed transversely to the pump axle and fixedly connected with the pump case.

Abstract: An over-mold lever in particular for use in a clamping mechanism for a vehicle steering column, is preferably made primarily of plastics material and includes a main portion (1) a head (5) and a hand grip (4). The head (5) is molded over an integrated camming surface (2), which is provided with one or more, preferably four, raised camming portions (2A). The camming surface (2) is arranged for engagement with a corresponding camming surface of another cam component to operate the clamping mechanism.

Abstract: An advancing/retracting mechanism having a pair of cams is disclosed. The advancing/retracting mechanism includes a first cam, a second cam, and a barrel. The first cam includes an angled surface and a shoe, and the second cam includes an angled surface and a slider. The shoe engages with a helical surface in the barrel, and the slider engages with a straight surface in the barrel. The first cam travels a first distance along the longitudinal axis of the barrel from a first to a second state, and the second cam travels a second distance that is greater then the first distance along the longitudinal axis of the barrel from the first to the second state.