Abstract: A thrust ring, in particular an axial bearing thrust ring, for forming a running surface for rolling elements, for use in bearing systems for universal joints of cardan shafts. The ring has a first planar end side and a second end side, having two surface regions on the second end side which have been machined symmetrically with respect to a first axis of symmetry SD of the thrust ring, and also in terms of its profile in the circumferential direction as seen starting from the first axis of symmetry, in the circumferential direction, to a further, second axis of symmetry SSD which runs at right angles to the first axis of symmetry SD.

Abstract: A rotary drive mechanism for use with a timer/sequence switch in an appliance is presented. The mechanism converts linear motion from a cam tracker following a programmed cam track to rotary motion to drive a vent damper in an appliance. The rotary motion output is derived as a multiple of the input linear motion through a gear set. This input linear motion is translated to rotary motion imparted to a tracking rod, which is coupled through the gear set to an output actuating rod. Tracking by a tracking lobe is accommodated by a spring bias force applied though a bias lobe that counteracts the force applied by the cam track. Alternatively, tracking by a tracker is accommodated by a spring bias force applied through a torque arm of the tracking rod that also counteracts the force applied by the cam track.

Abstract: A hinge assembly has a tubular member having a longitudinal axis, a peripheral surface, and a slot formed in the peripheral surface. A button member extends into the tubular member to undergo sliding movement in an axial direction along the longitudinal axis of the tubular member and to undergo rotational movement relative to the tubular member. A pin member is connected to the button member and extends into the slot of the tubular member to undergo movement therein during sliding and rotational movement of the button member relative to the tubular member. The button member is biased in a preselected direction of rotation relative to the tubular member by a first biasing member. The button member is biased in an axial direction by a second biasing member.

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: An axial setting device comprising two plates (24, 29) which are relatively rotatable and coaxially supported relative to one another and between which balls are guided in pairs of ball grooves (34, 39) in the plates (24, 29), with the depth of said pairs of ball grooves (34, 39) being circumferentially variable; of the plates (24, 29), one is axially supported and one is axially displaceable against the elastic returning forces of spring means; at least one of the plates (24, 29) is drivable via a driveline by a driving motor (11). Within the driveline, between the driving motor (11) and the drivable plates (24, 29), there is inserted a switching coupling (83).

Abstract: A pick-up apparatus for picking up semiconductor chips comprising an integrated or a separately rotatable composite cam formed by a plurality of cylindrical cams, and a plurality of cylindrical pin holders having a plurality of push-up pins, and at least part of the pin holder is in contact with the composite cam. The rotation of the composite cam selects one of the pin holders suited for pushing up a desired semiconductor chip, and the counter rotation selects another pin holder suited for another semiconductor chip having a different size. In this manner, a plurality of semiconductor chips having different sizes can be properly picked up without replacing the pin holder.

Abstract: A device contains a super absorbent hydrophilic polymer in combination with a compatible liquid to form a thick, viscous gel-like colloidal fluid to provide high durability, low cost, and ready manufacture in footwear, medical applications, including surgical padding, flotation sleeping devices, and other applications for the dissipation of shock or load over time and/or an area.

Abstract: A cam having a front surface and a rear surface to reciprocate a double-headed piston of a compressor twice for every rotation of a drive shaft. A positioner is provided on the front and rear surface of the cam to position the cam on a fixture used for grinding of cam surfaces. The cam surfaces are formed by grinding the front and rear surface of the cam into a convex shape with the cam positioned to the fixture by the positioner. The front cam surface and the rear cam surface have identical shapes and their phases are offset by a predetermined angle with respect to one another. The positioner is arranged at the same position on the front and rear surfaces of the cam with respect to the cam shape.

Abstract: A double-headed piston type compressor has a disk plate. The disk plate is rotatably supported on a drive shaft for driving each piston along a reciprocating path. The plate is curved in a single direction to form a solid cam on its surface. The cam transforms a single rotation of the plate into two reciprocating movements of the piston. Cam followers provided between the plate and the piston are formed to be conform with the shape of the cam. The cam followers contact and roll on the piston, and slide on the cam.

Abstract: A wave cam type compressor is provided. The compressor has a wave cam body mounted on a rotary shaft for integral rotation and pistons operably contacting said cam body by way of shoes. The shoes are moveable relative to the cam body according to the rotation of the cam body. The shoes move on predetermined paths on cam surfaces of the cam body. The rotation therewith of the rotary shaft is converted into a reciprocation movement of the pistons between top dead center and a lower dead center in cylinder bores to compress fluid supplied into the cylinder bores. Each cam surface has a contour matching the locus of a predetermined smooth two-dimensional imaginary curve when the curve is translated from its plane in the direction perpendicular to the plane. A first portion is provided on the cam surface to drive the piston to the bottom dead center and a second portion is provided on the cam surface to drive the piston to the top dead center.

Abstract: A structural component (21) is moved axially back and forth with the aid of a closed cam (40A) arranged on a rotating cam carrier (33) for mechanically entraining cam follower rollers carried by the structural component. At least one roller (26) of a pair of rollers contacts one cam surface of said closed cam with a controlled contact force. For this purpose the contact force between the cam follower rollers and the respective cam surface is varied during one cam revolution in such a way that in an angular range (41) of the reversing point (O.T., U.T.) the contact force of at least one cam follower roller that transmits the motion in the respective direction, is increased to such an extent that this force corresponds at least to the inertia force resulting from the brake application or acceleration of the component to be moved. Outside of the angular range (41) the cam follower rollers (26, 27) are kept in contact with the cam surfaces with a minimal force.

Abstract: A wave cam type compressor is described. Cylindroid blocks are provided to support a drive shaft and to contain a plurality of cylinder bores centered around the drive shaft. A wave cam attached to the drive shaft has cam surfaces on the front side and the rear side. The cam surfaces are composed of convex surfaces only. Pistons in the cylindroid blocks are operated by the wave cam through shoes. Each shoe has a spherical surface and a flat surface. The spherical surface is fitted in a recess formed on the piston, while the flat surface makes line contact with the cam surface of the wave cam. The shoes move relative to the wave cam on a predetermined circular path on the cam surfaces. The rotation of the wave cam together with the drive shaft is converted to reciprocating motions of the pistons in the cylinder bores with the aid of the shoes and wave cam, thus achieving compression of a fluid supplied to the cylinder bores.

Abstract: A wave cam type compressor includes cylinder blocks. A drive shaft is rotatably supported in the center cylinder blocks. A plurality of cylinder bores are defined about the drive shaft in the cylinder blocks. A wave cam, mounted on the drive shaft, comprises opposing cam surfaces. A width of second portions which move a piston to its bottom dead center position is more narrow than a width of first portions which move a piston to its top dead center position. The pistons are connected to the wave cam by way of shoes. The shoes move along a predetermined path on the cam surfaces. The shoes and the wave cam convert the integral rotation of the drive shaft and wave cam to a reciprocating movement of the pistons to compress fluid introduced into the cylinder bores.

Abstract: An attachment for a hand tool for converting rotary motion to reciprocating motion to an air bathed tool holding chuck.

Abstract: The present invention provides a crystal ball which move upwardly and downwardly, wherein the convex surface of the planetary gears which is used to drive the revolving disk is a bevel to form a bulgy state, and a mantle surrounding said bulgy convex surface is on the upper side of the revolving disk; and the dynamic phenomena including revolution, rotation and moving upwardly and downwardly performed by the doll inserted into said mantle are driven by the rotation of the revolving disk and the planetary gears.

Abstract: Disclosed is a compressor having a plate rotatable about an axis of a rotary shaft and a piston connected to the plate, wherein the plate causes the piston to reciprocate between a top dead center and a bottom dead center of its stroke in accordance with the rotation movement of the plate. A cam surface is provided with the plate for actuating the piston. A shoe engages with the plate for transmitting the rotation movement of the plate to the piston. A recess is formed on the piston for restricting rolling of the shoe on the plate for causing the shoe to slide on the plate to reduce the pressure caused by the contact between the cam surface and the shoe.

Abstract: An anti-blockage bearing for use in rotary core drilling of rock or other hard earth. Situated between the upper end of a freely suspended core barrel assembly and the core barrel coupling, the invention consists of spherical bearings retained within an upper and a lower annular housing, one or both of which are provided with a thrust race comprising a plurality of indentations and intervening ridges. During normal drilling, the core barrel is freely suspended within the outer tube of the lower end of the drill string. In the event of blockage, the core barrel will automatically be pushed upwards causing the thrust race of the lower housing member to bias the bearings against the thrust race of the upper housing member. As the bearings encounter the ridges and indentations of the thrust races, a jarring vibration action is imparted to the core barrel, dislodging the blockage.

Abstract: A variable valve actuating device and method are disclosed, the device including a rotatable cam having a selectively configured cam face engagable with a worm drive at an outer engaging surface of the cam, the worm drive being configured for both rotary and axial movement, rotary movement imparting rotational motion to the cam face, and axial movement changing relative valve timing. The device preferably includes a plurality of such rotatable cams engagable with different ones of a plurality of worm drives to thus provide selective variation of valve opening and valve closing times independently of one another, with open-valve duration being variable to occur at any point in an overall operating cycle of the system.

Abstract: A drive mechanism for converting a rotational drive motion into a linear back and forth motion comprising driven member (21) for performing said back and forth motion, and a rotational drive member (33) for applying a driving force to the driven member. The drive member has a cam track (40, 43) cooperating with a cam follower (34, 35) of the driven member. The cam track has straight sections and motion direction reversing zones (41, 42) interconnecting the straight sections to provide an uninterrupted cam track. The cam track straight sections have back-tapered cam surfaces arranged in such a manner that the cam follower does not engage the respective cam surface which faces in a direction opposite to an instantaneous linear motion direction of the driven member, whereby the cam follower engages only cam surfaces facing in the instantaneous motion direction, except in said motion direction reversing zones.

Abstract: An improved gate valve having a body with a chamber and an inlet and an outlet extending therethrough into said chamber, a gate mounted for reciprocation in said chamber between open and closed positions, a pressure responsive actuator having a housing, a piston, a connection to the gate and an actuating stem extending from the housing, a supplemental actuator having a connection to the actuator housing, an operating stem connected to the actuating stem, the operating stem having a shoulder facing in the direction opposite to the direction of closing movement of the gate, roller levers pivotally mounted to be in engagement with the exterior of the operating stem and a spring urging the roller levers into tight engagement with the operating stem, the roller levers pivoting on engagement with the stem shoulder to exert a closing force on the stem.

Abstract: An improved gate valve having a body with a chamber and an inlet and an outlet extending therethrough into said chamber, a gate mounted for reciprocation in said chamber between open and closed positions, a pressure responsive actuator having a housing, a piston, a connection to the gate and an actuating stem extending from the housing, a supplemental actuator having a connection to the actuator housing, an operating stem connected to the actuating stem, the operating stem having a shoulder facing in the direction opposite to the direction of closing movement of the gate, roller levers pivotally mounted to be in engagement with the exterior of the operating stem and a spring urging the roller levers into tight engagement with the operating stem, the roller levers pivoting on engagement with the stem shoulder to exert a closing force on the stem.

Abstract: A transfer feeder for operating to successively transfer articles from a certain position to a next position by clamping, lifting, advancing, lowering and unclamping repeatedly articles with a pair of parallel feed bars. The transfer feeder is provided with a mechanism for driving the feed bars comprising a single cam shaft rotatably supported through a feeder box, clamping cams, a lifting cam and advancing cams carried on the cam shaft, cam levers cooperating with wherementioned cams for operating the feed bars supported by a special structure as to guide the feed bars to move in the above manner. This transfer feeder is advantageous in that the total weight of operating sections is reduced and the smooth operation can be ensured.

Abstract: An anti-rolling structure for a double headed piston of a disc cam type reciprocative compressor, comprising a cylinder block (1) through which a plurality of pairs of front and rear cylinder bores (4) are provided in parallel to a drive shaft (3) rotatably secured in the center of the cylinder block (1), and a double headed piston (8) slidably inserted in the respective pair of cylinder bores (4) for reciprocation in the longitudinal direction. A disc cam (13) having opposite sinuous surfaces (13') and rotatably accommodated within a cam chamber (5) is fixedly secured to the drive shaft (3), and a pair of front and rear cam rollers (14F, 14R) are arranged between the disc cam (13) and the piston (8) in a slidable and rotatable manner so as to nip the disc cam (13) between both cam rollers (14F, 14R) to transmit the rotation of the disc cam (13) to the piston (8) as a reciprocation in the longitudinal direction thereof.

Abstract: A cigarette pack accumulator assembly utilizes a rotating pack accumulating drum having a plurality of cigarette pack accumulating columns equally spaced about its periphery. Each such column guides a pack support pedestal for movement either downwardly during pack accumulation, or upwardly during pack discharge. A lead screw is rotatably supported within the accumulator drum and can be driven at varying speeds and directions to either raise or lower the pack support pedestals. Packs of cigarettes may be removed from a production line and accumulated, they may be stored, or they may be removed from the accumulating columns and returned to the production line.

Abstract: The device comprises a stopper having an operating head (10), an intermediate portion (12) bearing a sealing ring, and a tail (14) formed with radial ribs which co-operate with slopes in the orifice in which the stopper is to be mounted, a portion (30) of said radial ribs being obliquely oriented so that rotation of the stopper about its axis gives rise to longitudinal translation along said axis. The invention is particularly applicable to devices for bleeding or for emptying the radiators of motor vehicles.

Abstract: Apparatus for interconverting reciprocating and rotative motion is comprised of a disc shaped rotative slant having a first continuous groove formed on its top surface and a second continuous groove formed in its bottom surface. The first and second continuous grooves have an elliptical configuration and they are defined by harmonic curves. An axle passes through the center of the rotative slant and the rotative slant makes an acute angle with respect to the longitudinal axis of the axle. At least one ball is adapted to ride in the first and second continuous grooves of the rotative slant and each of these pairs of balls have a coupling slide with structure for capturing the balls in these grooves while permitting free rotation therein. Within the housing for the apparatus is a track assembly for each of the coupling members that permit the coupling to travel in a reciprocal motion.

Abstract: An electric knife having a housing, a motor fixed in the housing having a drive shaft disposed for rotation about a drive axis, a spur gear fixed to the end of the drive shaft, a flange fixed to the motor including an integrally formed, axially-projecting output shaft coaxial to an output axis and parallel to the drive axis, an output gear in meshing engagement with and driven by the spur gear disposed on the output shaft for rotation about the output axis, a tubular element coaxially engaging the output gear for rotation therewith about the output axis, the tubular element including a cylindrical cam in the outside surface thereof, and a pair of blade holders disposed in the housing in adjacent, opposed relation for independent, linear reciprocation parallel to and on opposite sides of the output axis.

Abstract: The lens holder of a lens focussing device is axially movable in a lens sleeve supported on a film holder on which it can slide. The rim of a focussing wheel is accommodated in the space between the collar of the lens and the top face of the lens sleeve. The rim thickness increases uniformly along half its periphery. This results in a relative movement of the lens holder and the lens sleeve when rotating the focussing wheel. The focussing wheel is axially deformable. Notwithstanding the focussing wheel being firmly mounted, this provision allows limited axial movement of the lens sleeve, rendering it possible for the lens sleeve to follow the course of the upper plate of the film holder.

Abstract: Slidably mounted blocks with toothed wheels supporting arms of various radial extension provide variable travel distances for the gripper bar when moving in the transfer direction.

Abstract: The pump jack is of conventional API front-mounted geometry Class III configuration, but is provided with an angularly disposed walking beam, so as to be able to pump a slant rod string. To incorporate versatility into the unit so that a single model can be used with different wells having different angularities, there is provided: means for altering the effective length of the Pitman arms (so that the angularity of the walking beam is changed, which permits the unit to be used with a rod string having a different slant); means for bringing the counterweight into phase with the well load; and means for altering the stroke length.

Abstract: A barrel cam turns with a shaft mounted on bearings in a cam box. Four linear bearings mounted on the outside of the box receive hollow slider tubes which are clamped to legs of an H-shaped frame which holds roller cam followers. Bearings and followers are lubricated with pressure fittings, and the cam box is drained. Parallel transfer bars connected to the frame support a feeder plate with spring loaded fingers and divider bars with inward facing forward and downward sloped channels to remove lowermost articles from stacks and to feed the articles forward. The transfer bars have pockets which receive inserts with recesses for holding edges of articles. Some of the inserts have openings for receiving horizontally oriented spring loaded retainers with inward and upward sloping article engaging faces. This application is a continuation, of application Ser. No. 005,268, filed 1-22-79, now abandoned.

Abstract: By providing an inexpensive, easily manufactured coil spring member as a cam surface which is spring biased and is controllably, reciprocatingly axially cycled by a rotating cam follower, an inexpensive, continuous operable, fail-safe, dependable, portable, impactor handpiece is achieved. In the preferred embodiment, the portable, hand-held impacting tool of the present invention also incorporates an inexpensively manufactured and easily installed key member retainingly engaged in an axially elongated slot to prevent unwanted rotation of the anvil member, while assuring continuous, trouble-free reciprocating axial movement thereof.

Abstract: A linear actuator in which a pair of relatively rotating thrust members have opposing surfaces on which are formed a plurality of concentric circular races in which a plurality of balls circulate. Each race is in the form of a helix over substantially the full circular length of the race with a step joining the ends of the helix. The steps in adjacent concentric races are spaced apart by 180.degree.. Each race over half its length is recessed so that the balls engage the opposing races along approximately half the length of each race, the recessed half of adjacent concentric races being offset by 180.degree. so that the thrust load is shared by substantially the same number of balls around the respective half-circular of the two sets of races.

Abstract: A collar on the drive shaft of a bicycle pedal hub is mounted with means to displace the collar longitudinally along the shaft. The displacement is accomplished by a limited reverse rotation of the pedals and shaft. The direction of the displacement may be in either longitudinal direction and depends upon the position of the collar before the reverse rotation of the pedals and shaft. Displacement of the collar causes a bicycle transmission to shift gears.

Abstract: Apparatus for the programmed change of position of one or more members, particularly of the nozzles of jet looms. The disadvantages of similar prior devices are mitigated by the arrangement of the device according to the invention in which a driving cam is provided with an auxiliary cam path for the cam following pin of a combined cam follower element, said pin being mounted axially displaceably on the carrier of the combined cam follower element and being urged toward the cam by a spring. One of the ends of said pin is controlled by the auxiliary cam path, while in the vicinity of the other end there is mounted a controlled arresting mechanism. The driving cam can be made in the form of a box or a globoidal cam. In the embodiment employing a globoidal cam, the pin of the combined cam follower element has its opposite ends of similar construction, while the combined cam follower element includes further auxiliary guiding pins which are arranged crosswise with respect to the pin of the cam follower.

Abstract: A device for driving a tool with a reciprocating motion utilizing a rotary electric or pneumatic hand drill as a power source. The device includes a main shaft adapted to be held in a three-jaw chuck of a hand drill and having a concentric sleeve-like rear eccentric attached thereto. The shaft is arranged to rotate in a bearing in a handle frame. A forward sleeve-like eccentric is disposed on the forward end of the main shaft and adapted to slide forward and backward on the main shaft, and on a guide rod parallel to the main shaft, having a compression spring and attached to the handle frame. The front end of the forward eccentric is internally threaded to accept a tool-holding chuck. In operation, the main shaft is attached to a power hand drill which rotates the shaft. The rear eccentric rotates against the forward eccentric causing it to reciprocate and drive a tool held in a front chuck.

Abstract: A solar energy collector, including an assembly of reflectors supported pivotally upstanding upon a circular carriage that rotates once a day upon horizontal, circular tracks, the reflector assembly being adjustable in inclination, so as always to face the sun directly, by means of a brace against its upper end, and the brace lower end traveling in a cam-shaped track having raised and lowered portions, and an electronic programmer activated by the sun light, so as to turn on an electric motor that rotates the carriage.

Abstract: A diaphragm pump comprises a diaphragm peripherally mounted in a housing to define a pump chamber and a gear chamber. A cam follower is reciprocably mounted in the gear chamber and secured to the diaphragm. A rotary cam-gear rotatably mounted in the gear chamber has an annular cam face engaging the cam follower to reciprocate the diaphragm when driven by an electric motor through a single stage reduction gear set. A compression spring located in the pump chamber expands the pump chamber and maintains the cam follower in engagement with the cam face.

Abstract: When the hammer drill spindle and chuck are driven forward with the mode selection collar positioned to allow axial movement of the chuck and spindle, the annular ratchet is driven by the spindle through a one way roller clutch so it rides up the sloping surfaces of the fixed annular ratchet and then drops off the tooth corners to deliver a hammer blow of a magnitude determined by the operator pushing on the tool. If the rotation is reversed the clutch prevents rotation of the clutch input and prevents injury to the operator. If the selection collar is moved to lock the lugs in the detent notch of the cam surface the drill can be rotated either direction with the hammer action always locked out.

Abstract: An apparatus providing for the generation, control and application of power to a cyclic functioning machine, using fluids under pressure to transmit and control energy by means of a rotary, segmented cam wheel. The cam wheel provides a plurality of interchangeable segments formed into a rim portion with axially spaced complementary counteracting cam faces formed about opposite rim ends. An individual cam follower, carried on a piston rod of a related hydraulic cylinder, coacts with each of the cam faces to accurately regulate the flow of hydraulic fluid to and from a working cylinder of a machine to provide timed and synchronized machine functions through the control movement of the working cylinder. The contoured configuration of the cam faces are arranged to provide for a desired acceleration and retardation of machine motions. Further, variable speed drive means, employed to drive the cam wheel, provides a timing adjustment between machine cycles.

Abstract: A motion change transmission includes a rotor rotationally supported by and/or within a framing assemblage or housing. The face of the rotor is provided with alternating, axially and circumferentially extending hills and valleys. At least one rod is disposed transversely relative to the rotor and is pivotal in a given plane relative to the assemblage or housing and is operatively engageable with the face of the rotor such that when one end of the rod traverses a rotor hill, the other end of the rod simultaneously traverses a rotor valley. Either or both ends of the rod are connected to reciprocating members. When means are provided for driving the reciprocating members, the transmission provides for the conversion of reciprocating motion to rotary motion. And when means are provided for driving the rotor, the transmission provides for the conversion of rotary motion to reciprocating motion.

Abstract: An infinitely adjustable variator which includes a drive shaft having mounted thereon first and second plane disks with the first plane disk being operatively connected with an idling coupling or regulable appliance for controlling the movement thereof. The second of the plane disks serves as a counterweight for the first plane disk. A third plane disk is provided for adjusting the position of the first and second plane disks. A pair of slots spaced from each other by 180.degree. are provided in the third plane disk for receiving cams provided on the first and second plane disks. An eccentric bore is provided in the first and second plane disks for receiving disk members fixedly mounted to the drive shaft. The third plane disk is connected to a box-shaped body which in turn is connected to a shiftable sleeve concentrically mounted with respect to the drive shaft. Actuating devices are operatively connected with the sleeve for selectively shifting the same.

Abstract: A drive mechanism for a toy or the like for imparting reciprocal movement to a driven member. In one toy application, the driven member comprises a sidewalk, and the drive mechanism imparts reciprocal movement to the sidewalk in either direction of movement of the drive mechanism. By designing the drive mechanism so that the sidewalk is moved in a forward direction at a slow rate of speed and in a reverse direction at a high rate of speed, it is possible to make objects such as toy people or animals advance in steps along the sidewalk.

Abstract: A drill attachment for converting rotary motion of a drill chuck into reciprocatory motion includes a tool support member movable longitudinally along a guide bracket and having one surface with a plurality of cam surfaces thereon so that the movement thereof is in response to rotation of an elongated shaft having one end portion thereof received in the drill chuck and an enlarged portion on the other end of the shaft with a plurality of cam surfaces thereon and in engagement with the cam surfaces on the one surface of the tool support member. The cam surfaces on the tool support member and the cam surfaces on the enlarged portion of the shaft are resiliently retained in engagement one with the other.

Abstract: A hydraulic power source for harnessing energy generated by the wave motion of a body of water. A primary or main float has a plurality of secondary or satellite floats spaced outwardly therefrom. The secondary floats are each attached to one end of a plurality of lever arms, the other ends thereof being attached to a plurality of rotatable shafts carried by the primary float so that up/down motion of the lever arms is translated into rotational motion of the shafts. When placed upon a body of water, the wave motion causes the secondary floats to be displaced upwardly or downwardly relative to the primary float. The motion of the secondary floats is translated by the generally vertical movement of the lever arms to the shafts to rotate the shafts. The rotational motion of the shafts is translated into linear motion within the primary float by means of interacting cam surfaces which activate pistons of linear pumps.

Abstract: A hammer tool such as a rotary hammer, hammer drill or the like includes a motor housing and a gear case secured to the motor housing forwardly of the motor housing. A motor in the motor housing has a shaft projecting into the gear case and a pinion formed on the end of the motor shaft. A first set of ratcheting teeth is formed on a body rotatably journaled in the gear case. An output spindle for holding a tool bit is provided and has a longitudinal axis. The output spindle is rotatably journalled in the gear case so as to be also slideable in the direction of said longitudinal axis. A second set of ratcheting teeth is mounted on the output spindle so as to be in confronting relation to the first set of ratcheting teeth. A spring provides a resilient force for holding the first and second sets of ratcheting teeth in spaced apart relation to each other.

Abstract: The invention relates to a fuel injection pump for internal combustion engines provided with a reciprocating and simultaneously rotating pump piston which serves as a fuel distributor and an associated cam drive mechanism arranged to actuate the pump piston, the cam drive including a cam disk which runs on rollers and in turn is coupled both with the drive shaft of the pump and the pump piston.

Abstract: An actuator for a valve in which valve opening and closing is effected via a rectilinearly movable member having, at one end, a driving device and, at its other end, a return-movement arrangement. To-and fro movement of the member under the control of the driving device and return-movement arrangement opens or closes the valve, or vice versa.The return-movement arrangement includes a ramp connected to the member and a resilient energy storing cushion for acting oppositely to the driving device on the member with a bridging roller transmission rolling contacting the ramp so that, depending on direction of movement of the member, energy is either stored in or dissipated from the cushion.

Abstract: A rotating body, such as a pulley or a guide wheel, is oscillatable along its rotational axis. The rotating body is carried by a longitudinal support having a cam surface extending generally perpendicular to the rotational axis. The support is mounted for rotation with a supporting shaft and is biased along the rotational axis so that the cam surface engages a stationary cam follower. Rotation of the shaft, support, and body relative to the cam follower results in the oscillation of the rotatable body.

Abstract: An apparatus for generating a series of seismic acoustic pulses in a body of water. The series is characterized by having continuously-variable, non-repetitive time intervals between successive pulses during a continuous seismic recording. The preferred generator is an air gun comprising a variable-speed motor with a rotating cam for actuating a sleeve valve which alternately opens and closes exhaust ports in a high-pressure chamber. As the valve repeatedly opens, jets of high-pressure air are impulsively expelled into the surrounding water, thereby generating an underwater acoustic pulse train.