Abstract: A connecting rod including shaft with a major flange projecting outwardly from one of its ends and a minor flange projecting outwardly from the other of its ends. The major flange and the minor flange each have a number of holes for the passage of threaded fasteners. Abutting the minor flange is a ring with a transverse aperture. A number of threaded fasteners releasably join the shaft and the link together.

Abstract: The cam device of the invention includes individually rotatable first and second cam followers performing predetermined movement along a groove defined by first and second sidewalls. The cam followers are positioned so that their axes extend in the same direction. Movement of the first cam follower is restricted by at least part of the first sidewall, and movement of the second cam follower is restricted by at least part of the second sidewall.

Abstract: A two-step roller finger follower including an elongate body having side walls defining coaxially disposed shaft orifices, a pallet end and a socket end interconnecting with the side walls to define a slider arm aperture, and a latch channel. The socket end is mountable to an hydraulic lash adjuster, and the pallet end is matable with a valve stem. A slider arm for engaging a high-lift cam lobe is disposed in the slider arm aperture and has a first end pivotably mounted to the pallet end of the body and the second end forming a slider tip for engaging an activation/deactivation latch. The latch is slidably disposed in the latch channel, and the latch has a nose section for selectively engaging the slider tip. A spool-shaped roller having first and second roller elements fixedly attached to the shaft is rotatably disposed in the shaft orifices, the roller being adapted to follow the surface motion of low-lift cam lobes.

Abstract: An actuating system for a mode-switching rocker arm device includes an elongate actuator shaft having a central axis that is parallel with and spaced apart from a central axis of an engine camshaft. An actuator lever extends in a generally radial direction from the actuator shaft to engage a locking pin of the rocker arm device. A cam follower engages and is pivotally oscillated relative to the central axis of the actuator shaft by an actuator cam lobe of the engine camshaft. A clutch/brake assembly is associated with the actuator shaft and the cam follower. The clutch/brake assembly is operable to selectively transfer pivotal oscillation of the cam follower to pivotal movement of the actuator shaft and actuator lever to thereby translate the locking pin and cause the rocker arm device to switch mode.

Abstract: A method for automatically setting valve clearances in internal combustion engines (also known as “tappet setting” or “valve lash setting”) comprises a series of steps in which a rocker arm is set to a zero position that is recorded as a reference datum and an adjustment screw is then operated to set the rocker arm to a first reference position. The adjustment screw is then rotated through a predetermined angle so that the rocker arm is moved to a second reference position. The difference between the first and second reference positions and the predetermined angle are used to determine a coefficient relating the angular movement of the adjustment screw to linear movement of the rocker arm. The coefficient is then used to calculate the angular rotation of the adjustment screw required to set a predetermined valve clearance relative to the zero position.

Abstract: An output cam for a variable valve mechanism includes a body configured for being pivotally associated with and driven by an input shaft. A lift profile of the output cam includes a base circle portion, a cam portion and a fixed radius portion. The base circle portion is adjacent to and continuous with the cam portion, and the cam portion is adjacent to and continuous with the fixed radius portion. The base circle portion has a base radius, the cam portion has a cam radius and the fixed radius portion has a fixed radius. The base and fixed radii are substantially constant. The fixed radius is a predetermined amount greater than the base radius. The cam radius increases from a value approximately equal to the base radius adjacent the base circle portion to a value approximately equal to the fixed radius adjacent the fixed radius portion.

Abstract: A variable valve lift device according to the present invention includes a tappet case, a sway member and a sliding member. The tappet case makes contact with one of cams arranged at a camshaft driven rotationally due to a crankshaft of an internal combustion engine and which is driven reciprocally due to the rotation of the cam. The sway member is so supported in the tappet case as to allow sway of the sway member and has a sliding face displacing a valve stem in an axial direction of the valve stem. The sliding member is so arranged in the tappet case as to allow sliding of the sliding member and sways the sway member when the sliding member is slid.

Abstract: What is proposed is a lever-type cam follower (1) made of sheet metal, typically for a valve train of an internal combustion engine, said cam follower (1) comprising two parallel side walls (3a, 3b) connected by a crossbeam (2), an underside (4) of the crossbeam (2) having a support (6) for at least one gas exchange valve on one end (5), said support (6) being limited by guide walls (7a, 7b) extending parallel to the side walls (3a, 3b), wherein the one end (5) of the cam follower (1) is narrower than the rest of the length of the cam follower (1), and at least in the region of said one end (5), the side walls (3a, 3b) have a smaller mean wall thickness (DSM) than over the rest of said length, which wall thickness (DSM) increases at least in said region continuously from ends (8a, 8b) of the side walls (3a, 3b) in the direction of the crossbeam (2), and the thickness (DF) of the guide walls (7a 7b) is smaller than the mean wall thickness (DSM) in the region of the narrow one end (5).

Abstract: A lash adjuster is provided which can keep a constant valve lifting amount. An adjust screw is brought into threaded engagement in a threaded hole formed in the bottom surface of an end plate of a lifter body. The adjust screw is biased in the axial direction by an elastic member. The threads of female threads of the threaded hole and the male threads on the adjust screw are serrated. The surface roughness of the pressure flanks of the serrated threads is set to 0.4 or over to prevent the adjust screw from retracting while turning when push-in loads are applied to the adjust screw from the valve stem, thereby stabilizing the valve lifting amount. Also, a slide member is mounted between the adjust screw and the valve stem and a retaining device is provided to prevent the slide member from turning relative to the nut member while supporting it so as to be movable in the axial direction.

Abstract: A flexible bushing for a cam follower, comprising a substantially rigid inner sleeve including an inner cam follower engaging surface, a length of the inner sleeve being greater than a thickness of a ram into which the flexible bushing is inserted, a substantially rigid outer sleeve including an outer ram engaging surface, a length of the outer sleeve being substantially equal to the thickness of the ram, the inner and outer sleeves being substantially concentric, and a shock absorbing flexible material disposed between the inner and outer sleeves.

Abstract: A valve actuator assembly for an engine includes a movable engine valve. The valve actuator assembly also includes a movable roller finger follower contacting the engine valve, a rotatable cam, and first and second intermediate finger followers for contact with the roller finger follower and the cam. The valve actuator assembly also includes at least one first actuator operatively cooperating with the first intermediate finger follower to position the first intermediate finger follower relative to the cam to move the roller finger follower to position the engine valve at either one of a desired lift and phasing for a primary opening of the engine valve and at least one second actuator operatively cooperating with the second intermediate finger follower to position the second intermediate finger follower relative to the cam to move the roller finger follower to position the engine valve at either one of a desired lift and phasing for a secondary opening of the engine valve.

Abstract: There is provided a cam apparatus which operates an output shaft by converting a continuous rotational motion at a constant speed of an input shaft into a complex rotation super-positioning an oscillating rotational motion and a rotational motion at an inconstant speed. The cam apparatus comprises an input shaft (5); a first output shaft (7); rotational motion converting cam mechanism (21); a slider member (9); a relative rotation regulating cam mechanism (31); a cam link mechanism (41); a second output shaft (11); and a motion converting cam mechanism (51) engaged with and between the second output shaft and the slider member. The motion converting cam mechanism transforms the reciprocal rectilinear motion displacement of the slider member into the oscillating rotation of the second output shaft to transmit the same thereto, and transmits the rotational motion at an inconstant speed of the slider member to the second output shaft.

Abstract: A carton closure system including a cam having a rear face and a camming surface opposite the rear face, the cam being mounted for linear reciprocation between a position wherein there is applied pressure against partially infolded portions of the end side walls of a carton blank to effect a sealing pressure against such infolded portions and a position wherein no material pressure is applied to the partially infolded end side walls of the carton blank, the movement between such pressure and non-pressure applied positions being facilitated by means of a multi-faceted geometry of the camming face of the cam.

Abstract: Simple configuration in a low-gear-ratio type oscillating mechanism for realizing at high transmission efficiency improved lay in the line windings. Spinning reel oscillating mechanism (6), a mechanism that reciprocates the spool (12) in cooperation with rotation of handle (1), is furnished with gear piece (21) and slider (22). The gear piece rotates cooperatively with handle rotation, and is a component on whose one lateral face first and second cam portions (21a), (21b) are formed rim-wise. The slider is attached, immovably in the spool axial direction, at its tip to the rearward end of a spool shaft 20 for the spool, and has: a first cam engager (22a) that extends in a direction intersecting the spool shaft and engages with the first cam, and a second cam engager (22b) that extends in the same direction as the first cam engager and engages with the second cam; and is for reciprocating in the spool axial direction by engagement with either the two cams or the two cam engagers.

Abstract: A piston-type internal-combustion engine having deactivatable, mechanically actuated cylinder valves that are respectively actuated by at least one camshaft via a roller drag lever (5) comprising two partial levers (5.1, 5.2) that are hinged to one another via an articulated shaft (6), on which the roller (7) associated with a cam (8) of the camshaft is rotatably seated. A locking mechanism (13) is provided to selectively couple or decouple the two partial levers (5.1, 5.2) to activate or deactivate the force transmission between the camshaft and the cylinder valve. The free end 5.11 of one partial lever (5.1) is supported on the cylinder valve (2), and the free end 5.21 of the other partial lever (5.2) is supported on the engine block (11).

Abstract: A housing (21) which comprises an input shaft (22) and a second output shaft rotatably supported in a housing (21), and a first output shaft (23) rotatably supported to be movable in the axial direction as well as the rotational direction, a first cam mechanism (25A) which transmits the rotation of the input shaft (22) to a rotation movement of the first output shaft (23), a second cam mechanism (25B) which converts the rotation of the input shaft (22) to an oscillating rotation of the second output shaft (24) and transmits it, a third cam mechanism (25C) which converts the rotation of the input shaft (22) to an oscillating rotation of the second output shaft (24) and transmits it, and the housing (21) is rotatably supported capable of oscillating to a fixed system such as a base by a supporting shaft, and a link mechanism for converting the oscillating rotation of the second output shaft (24) to an oscillating movement of the housing (21) is provided in between the second output shaft (24) and the fixed syst

Abstract: An electronic parts-mounting apparatus including a rotating vertical shaft and at least one mounting head arranged around the vertical shaft has a lift cam mechanism that operates to lift and lower an associated one of the at least one mounting head as each mounting head is rotated with the vertical shaft. The lift cam mechanism includes a cylindrical cam having an annular protruding portion concentrically disposed with respect to the vertical shaft that provides upper and lower cam surfaces. Upper and lower rolling cam followers are arranged respectively on the upper and lower cam surfaces of the protruding portion to sandwich the protruding portion therebetween. One end of a support member has one of the upper and lower cam followers mounted thereon and the other end of the support member has the associated one of the at least one mounting head connected thereto.

Abstract: In a valve train of an internal combustion engine, which valve train comprises an elongate anti-rotation bridge (6) comprising receptions spaced behind one another for receiving valve tappets configured as roller tappets (4), one of which tappets is arranged in each reception and is directed with a tappet roller (3) toward a cam (2) of a camshaft (1), the roller tappet (4) of the invention comprises on an outer peripheral surface, raised tappet contours (10, 11) that engage into retention grooves of the bridge (6) within the reception.

Abstract: A method for making a support (6) for a valve stem in a lever-type cam follower made of sheet metal is proposed. According to the invention, this support (6) with its guide walls (7, 8) is made by cold forging.

Abstract: A cam mechanism through which torque applied to an input shaft is converted into the bi-directional rotation and reciprocating axial movement of an output shaft. Two cam elements are utilized, one consisting of a roller gear cam attached to the input shaft, and the other of a recessed channel type cam formed on one side of the roller gear cam. Two power transfer mechanisms are also utilized, one consisting of a turret installed adjacently to the roller gear cam as means of imparting a rotational movement to the output shaft, and the other consisting of a reciprocating swing arm of which one end is driven by the channel type cam. The turret is connected to the output shaft through a sliding spline that allows the output shaft to move axially within the turret, by means of a movable connection with the reciprocating swing arm, while being rotationally driven by the splined connection.

Abstract: The invention proposes a switching element (1) for a valve train of an internal combustion engine, said switching element comprising an outer element (2) and an inner element (4) that is arranged for axial displacement in a bore (3) of the outer element (2), each of the outer element (2) and the inner element (4) comprising at least one reception (12, 9) aligned to each other in an axially distant relative position which is achieved through a lost motion spring (8), at least one piston (10) being arranged in at least one of the receptions (12, 9) for sliding toward the other of the receptions (12, 9) to couple the inner element (4) to the outer element (2) in said relative position, and a high-position stop for defining said relative position being arranged between the inner element (4) and the outer element (2).

Abstract: A variable valve actuating mechanism includes an output cam configured for being pivotally disposed upon an input shaft. A first link arm is pivotally coupled at a first end thereof to the output cam. A rocker arm is pivotally coupled at a first end thereof to a second end of the link arm. A first frame member is configured for being pivotally disposed upon the input shaft. Lash adjusting means pivotally couple together a first end of the first frame member and a second end of the rocker arm. The lash adjusting means adjusts the position of the rocker arm relative to the input shaft.

Abstract: A variable compound rocker system for varying the lift of intake valves of an internal combustion engine is provided. The system comprises a rocker shaft with eccentric rings non-rotatably attached thereto. Furthermore, the system includes primary rockers non-rotatably attached to the eccentric rings. The primary rockers have engaging surfaces for engaging rollers attached to secondary rockers. The rollers enable the primary rockers to actuate the secondary rockers, thus actuating the intake valves. The system further includes an actuator assembly adapted to incrementally rotate the rocker shaft, and thus the primary rockers. This incremental rotation of primary rockers changes their attitude causing the lift of the intake valves to vary, thus varying the engine performance characteristics.

Abstract: An adjustment system for a plate-like member includes a cam member formed with an appropriate cam curve in contact with front or rear surface of, for example, a reflector installed in an optical scanner to reflect a scanning beam of an optical scanner so that a reflecting direction of this reflector may be adjustably varied by rotating the cam member and optical and scanning characteristics of the optical scanner may be ensured.

Abstract: A valve pause mechanism of a four-stroke internal combustion engine includes a valve pause mechanism. A valve lifter fitted between a valve cam and a valve stem of a poppet valve is always pressed in a direction in which the valve lifter contacts the valve cam with a lifter spring. However, a slide pin is fitted into a slide pin holder fitted in the valve lifter so that a slide pin can slide in a direction perpendicular to the valve stem. A stem working face in contact with the valve stem of the poppet valve and a stem through hole that the valve stem pierces are both adjacently formed in the slide pin and a slide pin driving mechanism. The slide pin driving mechanism selectively makes the stem working face and the stem through hole face the valve stem by moving the slide pin. A side of the slide pin at the back of the stem working face is chamfered across the stem through hole.

Abstract: A mechanical linkage for attaching a first load-carrying member to a second load-carrying member includes an elongated race that defines an axis and at least one ball. The elongated race is formed with an aperture that is surrounded by two opposed faces and two opposed semi-circular surfaces. Importantly, each face is formed with a channel that extends in a direction that is substantially parallel to the direction of the axis of the race. The ball is formed with a cylindrical thru-hole that passes through the center of the ball to allow the ball to be attached to the first load-carrying member while disposed within the aperture of the race. The race holds the ball but allows for limited rotation of the ball and translational movement of the ball along the axis of the race. The race includes an extension for attachment to the second load-carrying member.

Abstract: A valve timing system for an internal combustion engine having a roller finger follower assembly including a lash adjustment mechanism. The roller finger follower assembly includes a base arm and a roller carriage that may be assembled to each other in a range of positions. The roller carriage supports a camshaft contact roller that may be moved by an adjustment mechanism to cause the camshaft contact roller to be contacted by the lobe of a camshaft in a range of angular relationships. The roller finger follower assembly includes a lash pin having a central section that is contoured to provide a secondary lash adjustment.

Abstract: A variable valve actuating mechanism includes an output cam pivotally disposed upon an input shaft. A first link arm is pivotally coupled at a first end thereof to the output cam. A rocker arm is pivotally coupled at a first end thereof to a second end of the link arm. A frame member is pivotally disposed upon the input shaft. Lash adjusting means include an eccentric pin and a force applying means. The eccentric pin pivotally couples together a first end of the frame member and a second end of the rocker arm. The force applying means applies a force upon the eccentric pin causing the eccentric pin to pivot which, in turn, adjusts the position of the rocker arm relative to the input shaft and thereby removes lash from the mechanism.

Abstract: A cam follower with roller of the present invention includes a cam follower body having a roller supporting portion integrated therein, a roller supporting shaft having both ends fixed to the roller supporting portion and a roller rotatably supported on the roller supporting shaft with a plurality of needle rollers interposed. At least one of the supporting shaft and the needle roller has a nitride layer on the surface thereof, and has a surface hardness of at least HV 650 and an amount of retained austenite of at least 25% by volume and at most 50% by volume. Thus, a cam follower with roller having excellent durability and fatigue life can be obtained.

Abstract: A deactivation hydraulic valve lifter includes an elongate lifter body having a substantially cylindrical inner wall. The inner wall defines at least one annular pin chamber therein. The lifter body has a first end configured for engaging a cam of an engine. An elongate pin housing includes a substantially cylindrical pin housing wall and pin housing bottom. The pin housing wall includes an inner surface and an outer surface. The pin housing bottom defines a radially directed pin bore therethrough. The pin housing is concentrically disposed within the inner wall of the lifter body such that the outer surface of the pin housing wall is adjacent to at least a portion of the inner wall of the lifter body. A plunger having a substantially cylindrical plunger wall with an inner surface and an outer surface is concentrically disposed within the pin housing such that the outer surface of the plunger wall is adjacent to at least a portion of the inner surface of the pin housing wall.

Abstract: A control device for folding movement of a stroller includes a safety button, a control button, two upper locking members and two lower locking members. The safety button can move left and right along an elongated opening of a housing member connected to the handle. The control button can move up and down through a lower hole of the housing, and has two pivotal bars having upper holes pivoted to a pivotal rod passing through upright elongated holes of lateral protrusions of the control button. When the safety button is pushed sideways to disengage the tops of the lateral protrusions, the control button can be pushed up for inner bottom curved surface to force the pivotal bars to pivot towards a respective edge of the control button. Steel ropes connected to the lower ends of the bars are pulled by the bars to lift upper locking members, which are provided to engage lower locking members pivoted to the frame of the stroller.

Abstract: In a flat sliding gear drive formed of flat panel-shaped sliding elements (1), (2), with a first sliding element (1) connected to a motor and a second sliding element (2) connected to a variable load, the first and second sliding elements (1), (2) have interacting wedge surfaces which are curved for providing a uniform torque loading of the driving motor.

Abstract: An assisting apparatus that uses power from a rotating member to assist the operation of a bicycle transmission includes a mounting member; a cam member coupled to the mounting member for rotation around a cam axis, wherein the cam member has a cam surface; a cam follower cooperating with the cam surface for moving in response to rotation of the cam member; a transmission actuating element coupling member for communicating movement of the cam follower to a transmission actuating element; a first coupling member coupled for rotation of the cam member, wherein the first coupling member moves between a first engaged position and a first disengaged position; an operating member for moving the first coupling member to the first engaged position; and a decoupling member that moves the first coupling member to the first disengaged position in response to a rotational position of the cam member.

Abstract: A tool or device is comprised of a generally cylindrical plunger that is retained in a generally cylindrical body. A spring fits inside the body to spring-load the plunger by means of a jam nut or other tensioning device. The plunger has tapped mounting holes with a pilot hole on the compression end for attaching various standard or custom components or attachments. The opposite tension end has a threaded extension also used for attaching devices. The body has a smooth outside diameter with at least one flat running the entire length. Due to the close fit of the plunger and body, the plunger has an axial groove on it upper surface to allow air inside the device to escape for smooth actuation. An optional splitclamp block is provided as a means of mounting. Also available as an option is a retracting lock.

Abstract: A tappet is provided including a foot having a cam contact surface and an axial bore formed therein; a tappet body having a body portion with an axially extending hub for reception in the axial bore of the foot; and a bearing assembly positioned between the foot and the tappet body, the bearing assembly operating to reduce friction as the foot separately rotates axially about a centerline of the tappet body.

Abstract: The invention relates to a roller tappet comprising an axle which supports the roller. The aim of the invention is to secure said roller in a simple manner in the roller bearings. To this end, the base body of the tappet is provided with a surrounding groove at pin level. A locking ring similar to a piston ring is arranged in the groove.

Abstract: Cam follower includes a cantilevered stud, and a bearing unit mounted on a head portion of the stud and having rollers and an outer ring. The outer peripheral surface of the outer ring constitutes a cam-driven surface. The cam-driven surface includes a central load-bearing region substantially parallel to the axis of the cantilevered stud, and a couple of load-reducing bearing regions indented radially inward from the central load-bearing region and located on opposite sides of the central load-bearing region axially symmetrically to each other. Mechanical stress acting on the inner surface of the outer ring, outer surface of the roller and outer surface of the stud's head portion presents a maximum intensity level at their respective points corresponding to a point of the outer ring which is subjected to maximum mechanical contact stress from a cam.

Abstract: A variable stroke crankshaft assembly includes a drive shaft surrounded by a sleeve. A crankshaft is disposed inside the drive shaft with the longitudinal axis of the crankshaft offset from the longitudinal axis of the drive shaft. A gear projecting outwardly from the crankshaft through a window in a drive shaft engages angled gear teeth on the inner surface of the sleeve allowing sliding movement of the sleeve relative to the drive shaft to rotate the crankshaft. A crankpin is attached to the crankshaft but offset from the rotational axis of the crankshaft. Rotational movement of the crankshaft with respect to the drive shaft thus pivots the crankpin with respect to the rotational axis of the drive shaft creating a crank stroke that may be varied by sliding the sleeve back and forth.

Abstract: A transmission mechanism for transmitting motion with a uniform speed transmission factor between first and second moveable elements comprises a set of cams adapted to rotate with the first moveable element about a revolving axis, and corresponding arrays of spaced-apart rollers connected to the second moveable element for movement therewith. The cams cooperate in relays with the corresponding arrays of spaced-apart rollers to continuously communicate motion between the first and second moveable elements. The cams are in rolling contact with the corresponding arrays of rollers, whereby torque and force transmission can be performed smoothly. Furthermore, the transmission mechanism allows for the reversal of both the direction of the input speed and the roles of the first and second moveable elements.

Abstract: In a combination of the shim 5 and cam 1 for use in a reciprocating mechanism portion, the shim 5 is made of a material having a hardness higher than that of the sliding surface of the cam 1 and the sliding surface of the shim 5 is finished to within a range of the surface roughness of Rz0.07-0.2 &mgr;m in 10-point mean surface roughness and further the sliding surface of the cam 1 is provided with open pores 1b. In the above combination, the generated torque and the wear of sliding portion are minimized by selecting a shim member whose surface roughness is difficult to deteriorate due to plastic deformation by a injection pump contact with a mating member and corrosion by various impurities mixed in lubricant and the like, and providing the surface of a cam member with an oil film holding function so as to maintain fluid lubrication of the sliding surface.

Abstract: Cam follower includes a cantilevered stud, and a bearing unit mounted on a head portion of the stud and having rollers and an outer ring. The outer peripheral surface of the outer ring constitutes a cam-driven surface. The cam-driven surface includes a central load-bearing region substantially parallel to the axis of the cantilevered stud, and a couple of non-load-bearing regions indented radially inward from the central load-bearing region and located on opposite sides of the central load-bearing region axially symmetrically to each other. Mechanical stress acting on the inner surface of the outer ring, outer surface of the roller and outer surface of the stud's head portion presents a maximum intensity level at their respective points corresponding to a point of the outer ring which is subjected to maximum mechanical contact stress from a cam.

Abstract: A mechanical timer to control multiple steps of a process comprising a first cam having a shaft, and a second cam having a shaft, wherein the shaft on the first cam extends into the shaft of the second cam. The rotational relationship between the first and second cams determines the length of time for at least one process step. First and second user adjustable elements are attached to the first and second cams. These user adjustable elements do not require any disassembly of the mechanical timer by the user or require any tools. A plurality of switches engage the cams to control various process steps.

Abstract: A tappet assembly for an internal combustion engine, the tappet assembly having a first end mechanically connected to a engine component and second end adapted to contact a cam lobe of a camshaft to displace the engine component, where the tappet assembly includes a tappet body having a recessed pocket positioned at one end thereof, the recessed pocket being defined by an extended peripheral lip of said tappet body, a ceramic wear pad at least partially received within the recessed pocket, and a mechanism for preventing the ceramic wear pad from rotating relative to the recessed pocket. The ceramic wear pad has a top surface for contacting the cam lobe, a bottom surface which is received in the recessed pocket, and a peripheral edge surface thereinbetween.

Abstract: A valve lifter apparatus is provided including a valve lifter body with predetermined oil paths for increase lubrication to a rolling member for engaging a lobe of a camshaft. An anti-rotation member for prevent rotation of the valve lifter in the lifter bore of the engine block as the valve lifter reciprocates is also provided. The valve lifter apparatus may be employed in high revolutions per minute engines to decrease valve lifter wear and increase performance.

Abstract: In a case where crowning is provided on a contact surface of a tappet roller by the combination of, for example, two circular arcs, a logarithmic crowning is determined in which an edge load does not occur in the bearing pressure even if its inclination with respect to the cam is {fraction (5/1,000)} or thereabouts, and a crowning profile is set between two logarithmic crownings. In addition, the crowning profile is defined so as to be present between the logarithmic crownings in a case where the axial position x with the center in the direction of a bus set as an origin is at a position 0.85-fold and at a position 1.0-fold the half Le of the effective contact length, respectively.

Abstract: The invention relates to a gear transmission with a steplessly adjustable translation ratio for converting of rotary speeds and of torques of shafts. The uniform rotary motion of a drive shaft is transferred to a driven shaft with the aid of time staggered operating gear transmission units. The rotary motion is transformed by a cam transmission initially into a uniform translational motion and in the following this uniform translational motion is transformed into another, also uniform translational motion, with a speed depending on the translation ratio setting with a translation device. Finally this translational motion is transferred again into a uniform rotary motion by a further planar cam transmission and transferred to the driven shaft.

Abstract: A cam-guided adjustable pedal actuator assembly for a vehicle includes a housing for connection to vehicle structure and a linear actuator operatively connected to the housing. The cam-guided adjustable pedal actuator assembly also includes a pedal operatively connected to the linear actuator for adjusting a position of the pedal relative to the housing. The pedal has a cam surface to cooperate with the housing as a force is applied to the pedal such that the housing and the pedal effectively act as one solid member to transfer force to an actuating member in a manner of a conventional pedal.

Abstract: An electronic component mounting apparatus includes a plurality of pickup nozzles (1) which are attached to the periphery of a rotary table, that intermittently rotates. The apparatus also includes a cylindrical cam (105) having a cam groove (106, 107a, 107b) which allows the pickup nozzles (1) to move up and down. A first roller (5) is attached to a first slide portion (4a), which is equipped with the pickup nozzles 1. The first roller runs within the cam grooves (106, 107a, 107b) to make the pickup nozzles 1 move up and down. A second roller (6) is attached to a second slide portion 4b, which is attached to the pickup nozzles (1). The second roller runs within the cam grooves (106, 107a, 107b) to make the pickup nozzles move up and down together with the first roller. Also, springs (9) are provided for biasing the first and second rollers (5, 6) into contact with the two side surfaces, respectively, of the cam grooves (106, 107a, 107b).

Abstract: Retention of a roller follower shaft in a follower body is provided by keyed ends formed by flats on the shaft with which a follower roller forms an assembly, together with additional bearings if needed. Slots are provided extending from shaft bore openings through spaced arms of the body to distal ends of the arms. The roller follower assembly is inserted in a pocket between the arms by sliding the keyed ends of the shaft through the slots of the arms to axially align the shaft with the shaft openings. The shaft is then turned about 90 degrees in the openings in which a slight interference fit retains the shaft against lateral motion.

Abstract: A corrosion resistant cam follower bearing assembly which includes a cam follower shaft, an outer bearing ring disposed about the shaft which defines an inner roller raceway, a sleeve fixedly mounted on the cam follower shaft and defining an inner roller raceway, a plurality of rollers interposed between said raceways, and seals at opposite axial ends of said outer bearing ring for protectively containing the roller elements and raceways. The outer bearing ring and sleeve are formed of heat treated corrosion resistant steel such that the raceways are hardened to at least 58 HRC, the outer bearing ring external exposed surfaces have a chrome plating for improved corrosion resistance in a working environment, and the cam follower shaft which also can be exposed to corrosive contaminants in a working environment is formed of a different and substantially more corrosion resistant material than the material of the sleeve and the outer bearing ring that defines the inner and outer bearing races.