Cam And Lever Patents (Class 74/54)
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Patent number: 6185849Abstract: A crystal ball has an assembled motive die set. The crystal ball includes a music box and a driving base, wherein the driving base has a plurality of driven gears which are driven by a center motive gear installed on the base of the driving base. Assembled motive die sets representing different motion types are mounted on the upper cover of the base with respect to the driven gears, and are changeable as desired. The motive die set is influenced by the dynamic force of the music box through the driving base.Type: GrantFiled: November 24, 1998Date of Patent: February 13, 2001Inventor: Jack Liu
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Patent number: 6101888Abstract: A driving member (15) of piston type has an upper side, on which an annular holder (28), upper and lower cams (31), (32), and a transmission sleeve (33) are arranged in order. An annular wedge space (35) is defined between the upper and lower cams (31) and (32). A plurality of wedging members (36) are inserted into the wedge space (35) and peripherally spaced apart at a predetermined distance. When the driving member (15) is driven upward, first a plurality of engaging balls (41) supported by the transmission sleeve (33) engage with a lower portion of a pull rod (12) and then a pushing surface (38) of the driving member (15) vertically separates the cams (31),(32) from each other through the wedging members (36). Thus the lower cam (32) drives the pull rod (12) downward through the transmission sleeve (33) and the engaging balls (41).Type: GrantFiled: October 30, 1998Date of Patent: August 15, 2000Assignee: Kabushiki Kaisha KosmekInventor: Keitaro Yonezawa
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Patent number: 6098478Abstract: A linear pick-and-place drive mechanism for relocating articles with finite adjustable maximum translation stroke range and finite adjustable lift stroke range, using selective placement of a translation cam follower into one of several spaced adjustment holes along the length of a translation arm, and selective placement of a lift cam follower into one of several spaced adjustment holes along the length of a lift arm. Pivoting motion of both the translation arm and the lift arm is driven by a single plate-type drive cam having a translation cam track on one side thereof and a lift cam track on the opposite side thereof, resulting in minimal housing size and reduced power requirements.Type: GrantFiled: November 6, 1998Date of Patent: August 8, 2000Assignee: Emerson Electric Co.Inventor: Don G. Sandrock
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Patent number: 6032922Abstract: A fluid flow control valve is provided comprising a valve seat inside a housing for defining a passage opening in the housing and a valve seal positioned against the valve seat for closing off fluid flow. A push rod extends from the valve seal and through the passage opening. The push rod is moveable for moving the valve seal off the seat to open the valve. The valve seal is restricted to substantially axial movement, preferably by a spring biasing the valve seal against the valve seat which spring is sized so as to engage the walls of the passage. A cam shaft rotatably mounted in the housing is provided for moving the push rod upon rotation of the cam shaft. A handle is non-rotatably connected to the shaft for rotating the cam shaft. A latch may be provided for releasably locking the handle in a position where the valve is open. A safety may also be provided on the latch arm so as to prevent the handle from being moved accidentally.Type: GrantFiled: December 10, 1996Date of Patent: March 7, 2000Assignee: Alemite CorporationInventor: Jerry D. Shew
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Patent number: 5931672Abstract: A dental tool assembly having a driving mechanism with interengaging camming surfaces shaped for continuous contact during use. The mechanism includes a drive shaft having a drive surface and a driven shaft having a driven surface. The cam surfaces are shaped and the shafts are transversely juxtaposed with respect to each other such that the drive surface and driven surface are in continuous contact during rotation of the drive shaft to impart oscillatory rotation to the drive shaft. Specifically, the drive surface is conical and preferably has a cone axis that is at an approximately 45.degree. angle with respect to the rotation axis of the drive shaft. The driven surface has alternating hills and valleys that are shaped for continuous engagement with the drive surface as the drive shaft rotates. Preferably a pair of juxtaposed valleys are provided with juxtaposed hills formed therebetween.Type: GrantFiled: June 19, 1997Date of Patent: August 3, 1999Inventors: Robert T. Postal, Michael E. Langlais
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Patent number: 5904065Abstract: A fully enclosed cam-actuated drive device for providing both lift and translational movements, incorporating protection against damage in either horizontal or vertical overload situations, achieved by providing optional spring protection along the vertical and/or horizontal axes, a roller gear cam for lift motion, a barrel cam for translational motion, translation guide rods, a translational carriage assembly slidably received on the translation guide rods, an input drive shaft, and vertical lift rods. The device may be configured as a walking beam device to impart a U-shaped output motion, or alternatively a closed box-shaped motion, as desired. A split carriage assembly reduces backlash of the device and a sliding dust cover prevents foreign objects from entering the drivers cam-actuated internal operating structure.Type: GrantFiled: November 26, 1997Date of Patent: May 18, 1999Assignee: Emerson Electric Co.Inventors: Frank H. Koller, Don G. Sandrock
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Patent number: 5875676Abstract: A feedback system for use in controlling control moment gyroscopes that are used in positioning a spacecraft where the relative rate of rotation is determined from the difference between the rotation rate of the gimbals of the CMGs and the rotation rate of the frame about the gimbal axis. The inertial reference units on the spacecraft are utilized as the source of measured rates of rotation of the three spacecraft axes with respect to a predetermined axis and these are converted to the rates of rotation of the frame about the individual CMG gimbal axes.Type: GrantFiled: September 2, 1997Date of Patent: March 2, 1999Assignee: Honeywell Inc.Inventors: David A. Bailey, Christopher J. Heiberg
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Patent number: 5842296Abstract: A crystal ball having an assembled motive die set. The crystal ball includes a music box and a driving base, wherein the driving base has a plurality of driven gears which are driven by the center motive gear installed on the base of the driving substrate. Assembled motive die sets representing different motion types are mounted on the upper cover of the base with respect to the driven gears, and are changeable as desired. The motive die set is influenced by the dynamic force of the music box through the driving base.Type: GrantFiled: March 6, 1996Date of Patent: December 1, 1998Inventor: Jack Liu
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Patent number: 5699256Abstract: An offset-drift correcting device is designed for a gyro-sensor mounted on an object and outputting a signal representing an angular speed of the object. The device includes a first section for detecting whether or not the object is rotating. A second section connected to the gyro-sensor is operative for smoothing the angular speed represented by the output signal of the gyro-sensor, and deriving an average angular speed of the object from the angular speed represented by the output signal of the gyro-sensor. A third section connected to the first section and the second section is operative for estimating an offset level of the output signal of the gyro-sensor in response to the average angular speed derived by the second section in cases where the first section detects that the object is not rotating. The third section includes an adaptive filter processing an output signal of the second section which represents the derived average angular speed.Type: GrantFiled: June 1, 1995Date of Patent: December 16, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuo Shibuya, Tsuyoshi Okada
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Patent number: 5697237Abstract: An electric motor operated actuating device for a blocking button of a door lock for central locking and unlocking of doors of a motor vehicle comprises an electric motor actuatable by a door key and provided with a driven shaft, a turning lever connectable with the blocking button for transferring the blocking button to a blocking position which locks the door lock and to an unblocking position which releases the door lock, a transmission including a turning member with a coulisse and a driver rotatable about a rotary axis and provided with a driver cam which runs in the coulisse. The coulisse is formed so that the turning member in each end rotary position of the driver cam is turnable by manual actuation of the blocking button through the turning lever by the driver cam to one of the two end turning positions, and during rotation of the driver cam from the one end rotary position to another end rotary position is turned to one or another end turning position.Type: GrantFiled: February 12, 1996Date of Patent: December 16, 1997Assignee: Robert Bosch GmbHInventors: Werner Dilger, Friedrich-Wilhelm Dreier
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Patent number: 5544546Abstract: A transmission arrangement includes a plurality of transmission linkages, of which at least one performs an oscillating movement which is repeated during each period. A control cam is formed on a first transmission linkage and a feeler roller is rotatably mounted on a second transmission linkage. The control cam and a contact surface of the feeler roller are in operative rolling contact during at least part of a period repeating in the respective periods. The second transmission linkage has a degree of freedom with respect to a bearing support which allows shifting due to deflections of the feeler roller mounted on the second transmission linkage as a result of a relative movement between the control cam and the feeler roller.Type: GrantFiled: May 18, 1994Date of Patent: August 13, 1996Assignee: Heidelberger Druckmaschinen AGInventor: Stefan Dopke
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Patent number: 5516075Abstract: A controller comprises a valve body having a valve element and a valve seat defining a fluid cannel openable and closable with a reciprocating upward and downward movement of a valve stem, a casing fixed to an upper portion of the valve body, an operating rod provided in an upper inside portion of the casing upwardly and downwardly movably, a drive device for moving the rod upward and downward, and a transmission device provided in a lower inside portion of the casing for transmitting a force acting on the rod to the valve stem.Type: GrantFiled: May 3, 1995Date of Patent: May 14, 1996Assignee: Fujikin IncorporatedInventors: Shigeru Itoi, Tetsuya Kojima
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Patent number: 5488769Abstract: A cam assembly and method for providing a substantially constant load to a motor that drives the cam assembly. A torque compensated cam assembly (142,300) includes a plurality of tracks (140,150,152/310,312,314) that are profiled with a surface that varies radially as the cam rotates, thereby actuating cam followers, each of which rolls along a different track. A tangential force developed by the cam followers as they move over rapid radial changes in the surfaces of the tracks produces a total net torque that at times tends to aid the rotation of the cam and at times tends to impede its rotation. In the application of the torque compensated cam assembly disclosed, the cam is used in a volumetric pump (30) that accurately delivers a desired volume of fluid at a desire rate. To assist in maintaining the accuracy of these parameters, the torque compensated cam assembly presents a substantially constant load to a motor (146,304) that drives the cam.Type: GrantFiled: July 8, 1994Date of Patent: February 6, 1996Assignee: Abbott LaboratoriesInventors: Vernon R. Natwick, Michael W. Lawless
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Patent number: 5437420Abstract: A system and related method is provided for rapidly repointing spacecraft through the application of a high torque, of a gyroscope in which braking means (20, 22) provided on a gimbal (16, 18) is actuated simultaneously with the actuation of the torque motor (24, 26) to achieve amplification of the control moment imparted to the gyroscope (10). Because only one brake (20, 22) may be actuated at a time in a double gimbal gyroscope system having a single spin wheel (12), actuation of the brake ( 20, 22) for each of the two axes is sequential. However in a system having redundant torque motors (24, 26), re-pointing of the spacecraft may be achieved using the simultaneous braking and torque application method of the present invention without increasing the repointing time by applying torque to a gimbal (16) rotating about one axis of the first spin wheel (12) at the same time that torque is applied to a gimbal (18) rotating around the orthogonal axis of the redundant spin wheel (12).Type: GrantFiled: July 16, 1993Date of Patent: August 1, 1995Assignee: Hughes Aircraft CompanyInventor: Harold A. Rosen
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Patent number: 5385062Abstract: An oscillating signal light mechanism producing substantially constant angular velocity oscillation cycles of a single light is comprised of at least one signal light assembly mounted on a base for rotation of the light assembly relative to the base, a source of motive power including an output shaft rotated at a constant velocity in a single direction of rotation, and a mechanism mechanically connecting the output shaft to the signal light assembly for converting the constant velocity single direction rotation of the output shaft to cycling movements of the signal light assembly through arc segment oscillations at substantially constant angular velocity.Type: GrantFiled: January 21, 1993Date of Patent: January 31, 1995Assignee: The Ahrens-Fox Fire Engine CompanyInventor: W. Kenneth Menke
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Patent number: 5357827Abstract: A cam assembly and method for providing a substantially constant load to a motor that drives the cam assembly. A torque compensated cam assembly (142,300) includes a plurality of tracks (140,150,152/310,312,314) that are profiled with a surface that varies radially as the cam rotates, thereby actuating cam followers, each of which rolls along a different track. A tangential force developed by the cam followers as they move over rapid radial changes in the surfaces of the tracks produces a total net torque that at times tends to aid the rotation of the cam and at times tends to impede its rotation. The cam is used in a volumetric pump (30) that accurately delivers a desired volume of fluid at a desire rate. To assist in maintaining the accuracy of these parameters, the torque compensated cam assembly presents a substantially constant load to a motor (146,304) that drives the cam.Type: GrantFiled: July 31, 1991Date of Patent: October 25, 1994Assignee: Abbott LaboratoriesInventors: Vernon R. Natwick, Michael W. Lawless
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Patent number: 5351723Abstract: An apparatus for driving a gripper belt in a rapier loom comprises a three-dimensional cam drive (1) for converting a rotational movement into a pivotal movement. The cam drive includes a rotatable cam carrier with a guide surface defining a closed curve (11), the closed curve having a generatrix (E) which is a circular arc. A pivot arm (5) engages the curved surface and pivots about an axis (3) of rotation through the center point of the generatrix. The apparatus is compact and it facilitates the adjustment of the stroke length of the gripper belt.Type: GrantFiled: October 4, 1993Date of Patent: October 4, 1994Assignee: Sulzer Rueti AGInventor: Maurer Reudi
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Patent number: 5343773Abstract: A motor-driven cam disk having a radially projecting, eccentrically arranged crank pin which generates a first movement, for example the pumping movement of a bellows pump. A running wheel which is pressed by a spring force against the cam disk in a resilient manner is arranged in the radial direction on the cam disk. The running wheel serves to generate a second movement, for example the swiveling movement of a swivel lever. For this purpose, the motor-driven cam disk has two cam paths which are offset relative to one another in a stepped manner and pass into one another at two locations on the cam disk. The cam disk has a switch tongue to enable the movements generated by the motor-driven cam disk to be decoupled from one another.Type: GrantFiled: September 10, 1992Date of Patent: September 6, 1994Assignee: Siemens AktiengesellschaftInventor: Heinz Lehna
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Patent number: 5328443Abstract: The massage apparatus includes a casing having a bottom and a top with an elongated opening formed through it. An elongated support is provided on the top of the casing in the direction of the elongated opening. A pair of spaced upright rods is pivotally mounted on the bottom of the casing. An inverted T-shaped frame includes two lateral arms pivotally mounted to upper ends of the upright rods and an intermediate arm upwardly extending from the two lateral arms and through the elongated opening of the top to connect with the support. A driving unit provided in the casing moves the upright rods to swing about the pivot point within a predetermined angle when the driving unit is actuated.Type: GrantFiled: July 8, 1992Date of Patent: July 12, 1994Inventor: Wen-Pin Lee
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Patent number: 5259877Abstract: An apparatus for forming phosphor layers in cathode-ray tubes includes a table having a plurality of operating positions for processing panels for cathode-ray tubes to coat phosphor layers thereon. A plurality of angularly spaced clamp heads for holding the panels, respectively, are supported on the table for rotation about a first axis and angular movement about a second axis in each of the operating positions. A cam, which is operatively connected to the clamp heads, has a first cam groove for angularly moving the clamp heads through different angles about the second axis in the operating positions and a second cam groove for keeping the clamp heads in a fixed angular position with respect to the second axis in the operating positions. Joint cam groove mechanisms are combined with the cam for selectively switching between the first and second cam grooves.Type: GrantFiled: March 12, 1992Date of Patent: November 9, 1993Assignee: Sony CorporationInventor: Mitsuru Ozaki
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Patent number: 5142925Abstract: A disk driven rotationally by an electric motor includes a cam-shaped groove and a shaft orthogonal to the plane of the disk. One end of the shaft bears a radial arm connected rotationally to the shaft, and fitted with a pin designed to engage the groove. The other end of said shaft is connected directly or indirectly with one or several movable parts to be animated.Type: GrantFiled: January 25, 1991Date of Patent: September 1, 1992Assignee: Euretal PLVInventor: Henri Fauvel
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Patent number: 5138883Abstract: A rebalance loop for controlling a dry tuned rotor gyroscope having a rotor moveable about two orthogonal axes, a first pickoff associated with one of the axes for producing an electrical error signal when a rate is applied to one of the axes, a second pickoff associated with the other of the axes for producing an electrical error signal when a rate is applied to that axis and a pair of torquer coil adapted to receive electrical control signals from the rebalance loop and apply torques to the rotor about the two axes for correcting errors detected by the pickoffs.Type: GrantFiled: September 28, 1990Date of Patent: August 18, 1992Assignee: Minister of National Defence of Her Majesty's Canadian GovernmentInventors: Francois Paquet, Michael F. Vinnins, Lloyd Gallop
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Patent number: 5063972Abstract: A projectile accelerator has a coupling transmission articulated between a cam follower lever and a picking lever which has two end positions. The projectile accelerator also has an eccentric rocker on the drive shaft which cooperates with a tensioning lug on the accelerating shaft in order to carry out a return motion of the picking lever without need for a large angular movement of the cam follower lever. The picking lever is able to traverse large angles of movement while the cam following lever traverses reduced angles of movement.Type: GrantFiled: August 27, 1990Date of Patent: November 12, 1991Assignee: Sulzer Brothers LimitedInventor: Erwin Pfarrwaller
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Patent number: 5059393Abstract: A chemical analyzer providing an analysis slide positioning apparatus and method for properly aligning a test slide relative to a sample dispenser of the chemical analyzer. The slide positioning apparatus is capable of moving the slide in three different planes of movement for effecting alignment of the slide and to control fluid application thereto. The positioning apparatus includes a platform which supports the slide, a mechanism for moving the slide on the support in a first direction, and a drive mechanism for moving the platform and the slide carried thereon in second and third directions extending perpendicular to each other and to the first direction.Type: GrantFiled: January 5, 1989Date of Patent: October 22, 1991Assignee: Eastman Kodak CompanyInventors: John A. Quenin, Johannes J. Porte, Raymond F. Jakubowicz
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Patent number: 5029836Abstract: An improved mechanism for feeding paper sheets from a stack by suction includes a manifold provided with a plurality of spaced sheet pick up devices carried by the manifold and in fluid communication therewith. The improved mechanism also includes motion orginating devices supporting said manifold for lifting the same and the suction mechanisms and a paper sheet held thereby from said stack and feeding it into the entry grippers or the printing roll feed mechanism of the printing machine. The motion originating devices are adjustable to pick up sheets at different locations relative to their leading edges while the printing machine is operating as contrasted with the heretofore necessary steps of shutting down the printing machine and making a mechanical adjustment in the feed linkage. The adjustment mechanism of the sheet register control extends to a point convenient to the printing machine operator.Type: GrantFiled: March 16, 1990Date of Patent: July 9, 1991Inventor: Edward H. Swaneck
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Patent number: 4993275Abstract: A cam mechanism for periodically swiveling a swivel device includes a rotatable first cam disk carrying a first cam serving as a main cam, a rotatable second cam disk carrying a second cam serving as an auxiliary cam, a first roller engaging the first cam under spring force and rollable on the first cam during rotation of the first cam disk, a second roller engaging the second cam under spring force and rollable on the second cam during rotation of the second cam disk, and a lever arrangement swivelable by the two rollers and having at least one spring for providing the spring force, including a swivel lever swivelable about a swivel axis and carrying the first roller, a swiveling movement corresponding to the first cam being impresable by the swivel lever upon the swivel device, the swivel axis and the two rollers having axes of rotation extending parallel to one another, and normals to the axes of rotation of the two rollers intersecting one another on the axis of rotation of the swivel axis and forming andType: GrantFiled: September 11, 1989Date of Patent: February 19, 1991Assignee: Heidelberger Druckmaschinen AGInventors: Gerhard Pollich, Norbert Thunker, Roland Lorenz
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Patent number: 4986139Abstract: A gyroscope system includes a gyroscope (1), angle pick-offs (5) and a control circuit (6,7). The angle pick-offs (5) sense the tilt of the gyroscope's rotor and generate a signal which is received by the control circuit (6,7). The control circuit generates a control signal which causes a torque to be applied to the rotor. The control circuit includes both a primary integrator (6) which integrates the signal from the angle pick-offs (5) and a secondary integrator (7) which integrates the signals output by the primary integrator (6).In one example an independent angular accelerometer provides a further input to the secondary integrator (7).Type: GrantFiled: September 5, 1989Date of Patent: January 22, 1991Assignee: British Aerospace plcInventor: Nigel F. Rennie
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Patent number: 4984607Abstract: A device for driving harnesses of weaving machines includes at least two driven cam shafts and at least one pair of conjugated cams connected to each other for each shaft. Swivel mounted levers which swivel about a common shaft are mounted alternately and in an opposite sense in relation to adjacent levers, each lever including two cam followers which operate with one of the conjugated cam pairs to provide a positive cam drive for the lever so that the lever oscillates. A transmission converts the oscillating motion of the levers into an up and down of the harnesses.Type: GrantFiled: December 5, 1989Date of Patent: January 15, 1991Assignee: Picanol N.V.Inventor: Daniel Beyaert
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Patent number: 4977787Abstract: The invention relates to a device for changing the position of a functional element in an electrical apparatus. The particular the head-mounting plate in a magnetic-tape apparatus, the functional element being mechanically movable between a rest position towards which it is spring loaded, and two spaced-apart operating positions, i.e. a first operating position and a second operating position. The functional element is electromagnetically held in the first operating position by an electromagnetic device and, when it leaves said first position owing to the electromagnet device being de-energized, can be held in the second operating position with the aid of the mechanical holding function provided by a mechanical holding device.Type: GrantFiled: May 2, 1988Date of Patent: December 18, 1990Assignee: U.S. Philips CorporationInventors: Karl Klos-Hein, Horst H. Rumpf
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Patent number: 4969368Abstract: An oscillation generating apparatus which has an oscillating shaft supported rotatable about an axis thereof, at least a cam follower attached eccentric to the oscillating shaft, at least a pair of drive shafts disposed parallel to the oscillating shaft and adapted to be connected to drive means to be rotated thereby; and at least a pair of cams attached to the pair of drive shafts for rotational movement therewith and kept in sliding contact with the cam follower, shape and location of the cams being so determined that at least one of the cams gives thrust force to the cam follower at any rotational angle of the oscillating shaft as the drive shafts are bieng rotated, whereby rotational movement of the drive shafts being converted to a back-and-forth rotational movement of the oscillating shaft. With the apparatus, a high rotational speed of the drive shaft can be correctly converted to a back-and-forth rotational movement of the oscillating shaft.Type: GrantFiled: January 30, 1989Date of Patent: November 13, 1990Assignee: Mitsuba Electric Mfg. Co., Ltd.Inventors: Tadashi Sekine, Tsuneo Akuto
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Patent number: 4967036Abstract: The invention relates to a device for charging the position of a functional element in an electrical apparatus, in particular the head-mounting plate in a magnetic tape apparatus. The functional element being movable between a rest or stand-by position and two spaced-apart operating positions, i.e. a first and a second operating position. The functional element, which is spring-loaded towards its rest position, is held electromagnetically in the first operating position. In order to cooperate with a first electromagnet device in both operating positions, the functional element is provided with a first armature plate. A control device controlled by a second electromagnet device, sets the non-extended functional element to its first operating position after said element has been applied to the first electromagnet device and extends the functional element, while applied to the first electromagnet device, to set it to its second operating position.Type: GrantFiled: May 2, 1988Date of Patent: October 30, 1990Assignee: U.S. Philips CorporationInventors: Karl Klos-Hein, Horst H. Rumpf
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Patent number: 4925154Abstract: 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.Type: GrantFiled: August 18, 1989Date of Patent: May 15, 1990Assignee: Cameron Iron Works USA, Inc.Inventor: Gerald S. Baker
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Patent number: 4889613Abstract: An analysis system including an ion selective electrode assembly, a sample container and a transport mechanism. The electrode assembly includes a reference electrode within a reference gel-filled well and ion selective electrodes disposed on an elongated portion of the electrode assembly. The sample container includes a body defining a plurality of reservoirs and a slot retaining an absorbant wiping and/or blotting material. The electrode assembly may be removably fixed relative to the transport mechanism. The transport mechanism includes a support table adapted to receive the sample container. The support table moves relative to the electrode assembly under the control of a cam to sequentially position the elongated portion of the electrode assembly within the reservoirs and the slot of the sample container.Type: GrantFiled: September 11, 1987Date of Patent: December 26, 1989Assignee: Beckman Instruments, Inc.Inventors: Jack D. McNeal, Mark Levine, J. Harvey Beery
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Patent number: 4876794Abstract: This invention relates to radial cams and tools utilizing radial cams. The radial cam includes a flat plate having at least a first flat surface and a spiral groove therein having a spiral track formed of a plurality of tracks having progressively smaller radii and including an outermost track, innermost track and intermediate tracks therebetween. A return slot connects the innermost track to the outermost track whereby a continuous groove is formed. A device utilizing this cam includes a base, the above described cam pivotally mounted to the base, a cam follower slidably received in the continuous groove and a at least one lever arm pivotally attached to the cam follower and the base.Type: GrantFiled: July 13, 1988Date of Patent: October 31, 1989Assignee: Radia-Cam Inc.Inventor: Herman A. Myers
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Patent number: 4871143Abstract: 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.Type: GrantFiled: February 15, 1989Date of Patent: October 3, 1989Assignee: Cameron Iron Works USA, Inc.Inventor: Gerald S. Baker
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Patent number: 4868435Abstract: An electrically driven vibrating apparatus such as a dry shaver comprises a single-phase synchronous motor having a drive shaft, together with a part to be reciprocated. A cam is rotated by the motor drive shaft, and a lever is journalled about a pivot and is in contact with the part to be reciprocated. A pressure roller is mounted on the lever and is in constant contact with the cam profile. A compression spring acts on the lever to urge the pressure roller towards the cam.Type: GrantFiled: May 7, 1987Date of Patent: September 19, 1989Assignee: U.S. Philips Corp.Inventors: Gerhard Diefenbach, Hugo Schemmann, Romuald L. Bukoschek
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Patent number: 4849097Abstract: A mechanical drive mechanism is designed for imparting pivotal motion to the frame arm or walking beam of a mineral jig. Rotary cam action is employed to mechanically pivot the walking beam or frame arm which supports a cone and flexible diaphragm at one end for imparting jigging action to the jig bed. Adjustment features are preferably provided to enable the amplitude of the reciprocating motion imparted to the diaphragm and cone to be selectively varied. In the preferred embodiment, the cam is constructed to be pivotal when at rest for enabling the amplitude of the camming action, and correspondingly the pivot stroke, to be varied.Type: GrantFiled: November 30, 1987Date of Patent: July 18, 1989Assignee: R. A. Hanson Company, Inc.Inventors: Raymond A. Hanson, Wayne Crockett
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Patent number: 4803889Abstract: An injection pump for supplying fuel to an internal combustion engine includes a plunger coupled to a cam follower which can be moved in one direction to effect fuel delivery by a multi lobed cam. The plunger is returned following fuel delivery by a return mechanism including two levers one of which carries a roller engaging the cam and the other of which engages the plunger. An adjustment shoe is carried by the one lever and is engaged by the other lever to enable adjustment of the backlash in the mechanism.Type: GrantFiled: June 19, 1987Date of Patent: February 14, 1989Assignee: Lucas Industries Public Limited CompanyInventor: Kenneth M. Harris
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Patent number: 4803413Abstract: A magnetic isolation and pointing gimbal apparatus provides support functions and multidegree of freedom pointing capability and simultaneous six degree of freedom bi-directional disturbance isolation. This is accomplished by integrating the support, isolation and pointing functions within one contiguous gimbal assembly. The apparatus comprises a housing having a shaft rotatably mounted therein such that the centroidal axis of the shaft is coaxial with that of the housing. A linear, two-axis, large gap, radial magnetic actuator is mounted in the housing concentrically with the shaft. A radial armature is mounted on the shaft adjacent the radial magnetic actuator. A set of linear, large gap, axial magnetic actuators are mounted in the housing. An axial armature is connected to the shaft and extends between the axial magnetic actuators. A torque motor is also connected to the shaft. A large gap, rotational position sensor has a first portion connected to the shaft and a second portion connected to the housing.Type: GrantFiled: July 15, 1986Date of Patent: February 7, 1989Assignee: Honeywell Inc.Inventors: John R. Kendig, William R. Hibble, James A. Kiedrowski
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Patent number: 4791327Abstract: A drive mechanism for a domestic vibration-type apparatus is provided, in which the rotor shaft (19) of a single-phase synchronous motor drives a cam-and-follower mechanism which converts the rotary motion of the rotor into a vibratory motion, the rotor and the stator having a main field direction (22) and (16), respectively. The longitudinal axis of the mirror-symmetrical cam extends at an angle to the main field direction (22) of the rotor. Rollers (31, 31a) which follow the cam (21) are arranged on a pivotal arm which is pivot about its central portion and a vibratory part (39) to be driven is arranged on the driving end (35) of this pivotal arm. As they cooperate with the cam the rollers are constantly in contact with the cam profile.Type: GrantFiled: July 17, 1986Date of Patent: December 13, 1988Assignee: U.S. Philips Corp.Inventors: Leo Bertram, Hugo Schemmann, Romuald L. Bukoschek
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Patent number: 4771142Abstract: A switch drive for a rotary switch includes a toothed gearing which is driven by an electromotor at its input and is provided with a switch drive shaft at its output. For obtaining a high switching speed upon soft initiation and especially soft termination of the switching process, the switch drive shaft 14 is connected in a rotation-fixed manner with a switch arm 12 which is engaged by an engaging member 10 supported eccentrically by a gear 6. The gear 6 is driven by the electromotor via a pinion 5. The engaging member 10 is arranged eccentrically to the switch drive shaft 14 such that the engaging member 10 describes with respect to the circle as described by the switch arm 12 either a hypocycloid or an arc with characteristics of an epicycloid.Type: GrantFiled: August 12, 1987Date of Patent: September 13, 1988Inventor: Georg Spinner
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Patent number: 4751444Abstract: A direct current (DC) powered gyroscope (41) utilizes an alternating current (AC) subsystem in which electrolytic switches (49, 50) control torquer motors (45, 46). The alternating current is obtained from commutation circuitry (21-23) in the gyroscope spin motor, so that the spin motor performs an inverter function. Advantages include reduced costs and the ability to operate the gyroscope (41) without an AC power supply.Type: GrantFiled: April 25, 1986Date of Patent: June 14, 1988Assignee: Allied-Signal Inc.Inventor: Maurice M. Orlarey
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Patent number: 4660482Abstract: A thread take-up lever in a sewing machine in which the driving cam disc of the take-up lever is mounted on the crankshaft driving the needle bar up and down. The driving cam disc is supported on one side while the spacing on the other side can be optimally utilized. This enables a correct position of the thread take-up movement.Type: GrantFiled: January 17, 1986Date of Patent: April 28, 1987Assignee: Husqvarna AktiebolagInventor: Kenneth O. E. Skogward
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Patent number: 4656926Abstract: A control unit for setting heating, air conditioning and/or ventilation in otor vehicles is provided. The control unit comprises a body adaptable for insertion into the instrument panel of a motor vehicle, said body having a front panel and a rear carrier member. At least one control knob, by means of which a driving bevel gear connected with it drives at least one driven bevel gear, is rotatably mounted in the front panel. An elongated adjusting lever which swings over a limited range cooperates with the driven bevel to actuate a Bowden cable, which in turn is capable of controlling heating, air conditioning or ventilation systems, particularly flaps in the system which control air flow.Type: GrantFiled: July 29, 1985Date of Patent: April 14, 1987Assignee: Preh Elektrofeinmechanische Werke Jakob Preh, Nachf. GmbH & Co.Inventors: Karl-Heinz Bauer, Reinhold Moret
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Patent number: 4641866Abstract: The invention comprises a lever handle having a handle-shaft receiving cam which is used to displace a slider to effect the retraction of a latchbolt. A yoke is positioned between the cam and slider to accommodate, adjustably, for handle droop. The yoke has a tapped hole and receives a machine screw which also penetrates an arcuate slot in the slider. Displacement of the yoke relative to the slot, corrects the handle droop by causing the cam to be slightly tilted. Accordingly, the handle shaft in the cam is correspondingly rotated about its axis, and the handle is brought into alignment with the horizontal.Type: GrantFiled: November 12, 1985Date of Patent: February 10, 1987Assignee: Von Duprin, Inc.Inventors: Paul J. Haeck, Gary R. Jacobs
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Patent number: 4638683Abstract: A camshaft having a plurality of cams disposed on a metal shaft in spaced-apart relation with each other in an axial direction of the shaft, comprising at least one ceramic cam portion which is made of a ceramic material, and which includes at least one of the cams. Each of the at least one ceramic cam portion has a pair of joining protrusions which extend from opposite ends thereof in the axial direction of the metal shaft. The camshaft further comprises metallic shaft portions having joining holes which engage the joining protrusions of the ceramic cam portion such that the ceramic cam portion is joined integrally to the metallic shaft portions.Type: GrantFiled: June 10, 1985Date of Patent: January 27, 1987Assignee: NGK Insulators, Ltd.Inventors: Yutaka Ogawa, Takayuki Ogasawara, Yoshiaki Hori
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Patent number: 4627555Abstract: An ingredient feeder for adding a first ingredient to a second ingredient including a hopper for receiving and discharging the first ingredient and a rotating auger located within the hopper. A portion of the auger extends out of the hopper and is surrounded by an auger housing. The auger housing has a discharge opening formed therein. A hollow chamber funnel is pivotally mounted to the auger housing and surrounds the discharge opening. A metering wheel housing, having a metering wheel therein, is positioned beneath the auger housing and the funnel directs a first ingredient into an inlet of the metering wheel housing. A passage extends below an outlet of the metering wheel housing and is in fluid communication therewith. The first ingredient is discharged from the metering wheel housing outlet into a second ingredient flowing through the passage. The funnel is oscillated relative to the auger housing.Type: GrantFiled: April 19, 1985Date of Patent: December 9, 1986Inventor: Michael P. Locke
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Patent number: 4620888Abstract: An apparatus and method for applying tubular labels to a product container at a labeling station including a reciprocally movable labeling assembly. The assembly is adjustably secured to carriage that is mounted for reciprocating movement at the labeling station. A drive system including a drive cam defining an asymetrical profile is operatively coupled to the carriage by a lever arrangement including a cam follower driven by the drive cam. The profile of the drive cam is configured to have a steep rise and a gradual drop so that the average speed at which the labeling assembly is driven through a label applying strobe is substantially less than the speed at which the assembly is driven through a return stroke thus reducing the stress applied to the label as it is installed. A fluid pressure operated actuator pressurized to a first predetermined pressure exerts a biasing force on the lever to urge the cam follower into contact with the drive cam.Type: GrantFiled: September 4, 1984Date of Patent: November 4, 1986Assignee: Automated Packaging Systems, Inc.Inventors: William M. Easter, Eric Gifford, Rick S. Wehrmann, Dana Liebhart
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Patent number: 4583473Abstract: In a pattern cam selecting device of a sewing machine having a plurality of stacked pattern cams, a swingable element is provided, which can be moved in one direction to disengage a cam follower from one of the stacked pattern cams. The cam selecting device further includes a locking element, a clutch mechanism, and actuating mechanism, and a cam rotated upon the rotation of a main shaft of the sewing machine. The swingable element is locked in the follower-disengaging position by the locking element while clutch mechanism is held in an inoperative position by a holding element. The locking element which normally engages the actuating mechanism includes a follower element which is held in a position out of a rotation path of the cam.Type: GrantFiled: November 21, 1984Date of Patent: April 22, 1986Assignee: Janome Sewing Machine Co. Ltd.Inventor: Yoshikazu Ebata
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Patent number: 4583728Abstract: A cam drive is used to drive the auxiliary gripper on a sheet-fed printing machine having a control cam and an auxiliary cam and associated cam followers. In order to use a minimum amount of pages and eliminate any bending moments from the forces between the cams, the control cam and the auxiliary cam are disposed in a common plane on two parallel shafts and the control lever and associated followers are disposed in the same plane between the cams.Type: GrantFiled: August 31, 1984Date of Patent: April 22, 1986Assignee: M.A.N.-Roland Druckmaschinen AktiengesellschaftInventor: Josef Mathes