Preselected Indexed Position Patents (Class 74/816)
  • Patent number: 9457454
    Abstract: A hydraulic hydrostatic pressure rotation module has a table piece with a mount face; an oil cavity piece installed on the mount face, having at least one first oil cavity, at least one second oil cavity, at least one third oil cavity, at least one first oil way communicated with the first oil cavity, at least one second oil way communicated with the second oil cavity and the first oil way, at least one third oil way communicated with the third oil cavity and the second oil way, and at least one fourth oil way communicated with the second oil way; a supporting oil seat installed on a face of the oil cavity piece away from the mount face, having at least one oil entry way communicated with the fourth oil way; a spindle through the supporting oil seat and the oil cavity piece and coupled to the table piece.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: October 4, 2016
    Inventor: Shang-Te Chen
  • Patent number: 8468911
    Abstract: A feed apparatus has a ball screw, a nut, a drive motor, a braking mechanism and a controller and moves a movable body vertically. When recognizing a movement command for rapid traverse relating to the movable body, the controller, when the movable body is to be moved upward, moves the movable body past a target position according to the movement command and then reverses the moving direction thereof and moves the movable body to the target position and stops it there, and, when the movable body is to be moved downward, moves the movable body directly to the target position and stops it there. After moving the movable body to the target position and stopping it there, the controller causes the drive motor to keep the position of the movable body at the stop position and causes the braking mechanism to brake the movement of the movable body.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: June 25, 2013
    Assignee: Mori Seiki Co., Ltd
    Inventors: Makoto Fujishima, Masami Yabuta
  • Patent number: 8430000
    Abstract: A cam indexer includes a driving assembly, a driving plate, a multi-task dial, a latching assembly and a positioning assembly. The driving plate defines an arc-groove at the periphery thereof and a cam surface at the bottom of the arc-groove, the driving plate further includes a receiving end and a resisting end positioned at opposite ends of the cam surface. The multi-task dial defines four positioning grooves along the periphery thereof; the latching assembly is fixed to the driving plate and elastically engages in first one positioning groove, the positioning assembly elastically engages in a second one positioning groove. The latching assembly and the positioning assembly are adapted to detach from the positioning grooves when the driving plate is driven by the driving assembly, such that the cam indexer functions as a partitioning mechanism.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: April 30, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Bing Li, Bo Yang, Yong Zhang
  • Publication number: 20130061717
    Abstract: A cam indexer includes a driving assembly, a driving plate, a multi-task dial, a latching assembly and a positioning assembly. The driving plate defines an arc-groove at the periphery thereof and a cam surface at the bottom of the arc-groove, the driving plate further includes a receiving end and a resisting end positioned at opposite ends of the cam surface. The multi-task dial defines four positioning grooves along the periphery thereof; the latching assembly is fixed to the driving plate and elastically engages in first one positioning groove, the positioning assembly elastically engages in a second one positioning groove. The latching assembly and the positioning assembly are adapted to detach from the positioning grooves when the driving plate is driven by the driving assembly, such that the cam indexer functions as a partitioning mechanism.
    Type: Application
    Filed: March 20, 2012
    Publication date: March 14, 2013
  • Publication number: 20130036864
    Abstract: The present invention relates to a method for operating a pivot drive, in particular a rotary indexing unit (10), having a rotating plate (12) which can be driven by a motor to execute a rotary movement about a rotation axis (R). A sensor (24, 24?) is provided, which provides sensor data, in particular angle data, is connected to a control device (26) and serves to monitor a rotary movement of the motor (22), the rotating plate (12) and/or a rotating component of a drive train which is arranged between the motor and the rotating plate. The sensor data is compared with predefined setpoint data, which is stored in the control device (26), in order to adjust at least one parameter which characterizes or influences the rotary movement if there is a deviation between the sensor data and the setpoint data, in order to minimize the ascertained deviation.
    Type: Application
    Filed: April 21, 2011
    Publication date: February 14, 2013
    Applicant: WEISS GMBH
    Inventor: Arnold Horn
  • Patent number: 8261631
    Abstract: A rotary machine may have multiple stations that have a linear motion operated by a cam and a rotational motion operated by individual motors mounted on each station. Each station may perform a motion profile that is proportional to the machine's central axis rotation or, in some cases, independent of the central axis rotation. In some embodiments, each station may rotate to orient a part prior to processing. In one embodiment, the cam driven linear motion may enable a station to lower for loading and unloading, then raise for processing. The rotary machine may have various mechanisms at each station for processing a part. One such embodiment is a rotary machine that may be outfitted with compound dispensing mechanisms at each station.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: September 11, 2012
    Assignee: Computrol, Inc.
    Inventors: William W. Weil, Scott J. Woolley, Ian J. Buckley, James N. McBride, Bert Johansson, Harley S. Crabtree
  • Patent number: 8191444
    Abstract: A control device, including a transmission shaft adapted to be coupled to an apparatus to be controlled, a driving disk mounted on said transmission shaft to rotate thereon and driven in rotation by a motor unit, a driven disk constrained to rotate with said transmission shaft, and a rotary member carrying at least one indexing means which, due to rotation of said rotary member, can be simultaneously engaged into two respective slots of said two disks for said transmission shaft to be driven in rotation, and can be disengaged from one of said slots for said transmission shaft to be locked against rotation.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: June 5, 2012
    Assignee: Areva T&D AG
    Inventors: Peter Von Allmen, Martin Zeugin
  • Patent number: 7506563
    Abstract: A treatment head of a tool machine and a member are relatively angularly positioned by an angularly indexable mount having a first coupling having first and second elements displaceable relative to each other, each formed with a respective array of a respective predetermined number of teeth, and respectively connected to the member and the treatment head. The number of teeth of the first-coupling first element varies by more than one from the number of teeth of the first-coupling second element. A second coupling meshable with the first coupling has first and second elements engageable with the first and second elements of the first coupling, fixed relative to each other, and each formed with a respective array of a respective predetermined number of teeth. The number of teeth of the second-coupling first element varies by more than one from the number of teeth of the second-coupling second element.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: March 24, 2009
    Assignee: Asterika Limited
    Inventor: James Morley Hulme Douglas
  • Patent number: 7263915
    Abstract: A turret includes a central shaft, a piston sleeve positioned around the central shaft and having moving sticks thereon, a push rod, an actuating seat, and internal and external turrets; the piston sleeve is left and right movable by a power source; the moving sticks are passed through a ringed sleeve, which props a push rod passed through a fixed clutch claw, and facing the actuating seat; the actuating seat includes a rotary shaft, a pivotal shaft, and a toothed ring seat; the piston sleeve can be moved such that the moving sticks and the push rod move forwards, and the rotary shaft engages the toothed ring seat for a tool of a straight tool seat to function; alternatively the piston sleeve can be moved such that the moving sticks and the push rod move backwards, and the rotary shaft disengages the toothed ring seat for allowing replacement of the toothed ring seat.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: September 4, 2007
    Assignee: Far East Machinery Co., Ltd.
    Inventor: Yung-Hsiang Lu
  • Patent number: 7111372
    Abstract: A milling machine for shaping blanks to create filter lenses for a clip-on accessory whose pair of filter lenses register with a pair of optical lenses in prescription eyeglasses when the accessory is hitched onto the frame of the eyeglasses. The frame of the eyeglasses is composed of two like half sections having a predetermined geometry, an optical lens being mounted in each half-section. The filter lenses in the accessory which are joined by a bridge piece have a geometry matching that of the half-sections of the frame whereby the appearance of the clip-on accessory is compatible with that of the eyeglasses.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: September 26, 2006
    Assignee: Opti-Clip Ltd.
    Inventors: Zvi Feldman, Eyal Peleg
  • Patent number: 7066063
    Abstract: A turret of a lathe has a power transmission that is used for moving a tool Disk secured on a shaft to a secured position where the disk is engaged with a clutch. The transmission includes a piston, and a force multiplier unit, which includes a ring, a sleeve secured to the piston, and steel beads. The ring has first sloping trenches. The sleeve has sloping trenches that are less steep and opposing the first trenches, and has recesses connected to the trenches. The steel beads are held in respective ones of the spaces defined by the sloping trenches and the recesses, and are positioned next to a gear secured on the shaft such that when the piston is actuated for moving the tool disk towards the secured position, the steel beads will push the gear with multiplied force output while being rolled along the sloping trenches.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: June 27, 2006
    Assignee: Factory Automation Technology Co., Ltd.
    Inventor: Yung-Hsiang Lu
  • Patent number: 7011795
    Abstract: The present invention is a device for playing a cartridge for dispersing scented materials into a room. The cartridge generally has a plurality of scent elements supported on a rotatable disk. The device includes a housing, a blower assembly, a platter, a motor, first and second sensors and a control unit. The housing has a cavity for receiving the cartridge and is formed with an air intake and an exhaust port. The blower assembly is mounted within the housing for generating an airflow by drawing air in through the air intake over the cavity to diffuse at least one of the plurality of scent elements out through the exhaust port. The platter is configured to engage the rotatable disk and is rotated by the motor. The platter, first and second sensors and a control unit cooperate to control the rotation of the disk. The device can also include a heating element for activating the scent elements.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: March 14, 2006
    Assignees: JCS/THG, LLC, The Procter & Gamble Company
    Inventors: Stanley O. Thompson, Ricardo Silveira, David Bossa, Jaideep Jayaram, Brice Daniel Westring, Keith Fanta, Stephan Gary Bush, Bruce Chang
  • Patent number: 6964213
    Abstract: A smart actuator and method includes an actuating device adapted to deliver a selected driving torque to a geartrain that is coupled to an output shaft and adapted to selectively convey the driving torque from the actuating device to the output shaft to achieve a selected shaft position. At least one logic and control device operates the various aspects of the smart actuator. The geartrain includes at least one locking gear including locking features defining a plurality of gear positions. A position lock solenoid is adapted to engage the locking gear at a selected gear position once the geartrain has achieved the selected shaft position on the output shaft. The position lock solenoid then holds the gear at the selected gear position. The actuating device is shut off after the position lock solenoid has engaged the locking gear thereby achieving and holding a high torque without driving a lot of current.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: November 15, 2005
    Assignee: Delphi Technologies, Inc.
    Inventors: Thomas Wayne Newman, Thomas E. Gyoergy, Jeffrey Jean Stege, Chris D. Robinson, Lawrence Dean Hazelton
  • Patent number: 6848338
    Abstract: An apparatus for moving a spindle along a longitudinal axis, the apparatus includes a spindle; a drive member for moving said spindle over a range of travel along said longitudinal axis in a first direction; a spring for applying a first force in combination with a second force to the spindle in the first direction; a stop element arranged so as to disengage the second force, such that when said spindle is within a first portion of said range of travel, said first force is applied to said spindle in combination with said second force, and when said spindle is within a second portion of said range of travel, said stop element disengages said second force so only said first force is applied to said spindle.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: February 1, 2005
    Assignee: Delaware Capital Formation, Inc.
    Inventors: Koenraad Alexander Gieskes, Stanislaw Wladyslaw Janisiewicz, Daniel Joseph Hibbard, Darrin Michael Weiss, John E. Danek, James W. Tripp
  • Patent number: 6819973
    Abstract: The present invention is directed to provide a control apparatus for a cutting machine in which offset values on coordinates relative to the cutting machine are indicated, regardless of the position of the turret, and an operator need not calculate the offset values in the cutting process. This invention is characterized in that an X-axis offset value (&Dgr;X) and a Z-axis offset value (&Dgr;Z) of a cutting edge of the cutting tool when the turret 1 has been turned to an arbitrary angle are converted to values on coordinates relative to the cutting machine, and indicated.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: November 16, 2004
    Assignee: Mori Seiki Co., Ltd.
    Inventors: Hiroki Nakahira, Katsuaki Ono
  • Publication number: 20020170385
    Abstract: A mechanical indexing device. The device comprises a mechanism for converting linear motion into many different combinations of linear and rotary motion, whereby an object can be moved along a desired linear path and indexed through a desired arc of rotation.
    Type: Application
    Filed: March 27, 2001
    Publication date: November 21, 2002
    Applicant: Florida State University Research Foundation
    Inventors: Stephan T. Dubas, Joseph B. Schlenoff
  • Patent number: 6385831
    Abstract: A workpiece table, provided for a machine tool, is movable back and forth between two end positions and has for this purpose a rotational drive which has a gear part joined to the workpiece table for rotation thereof, a toothed rack in engagement therewith, as well as a medium-actuated shift drive for displacement of the toothed rack, which thereby performs a linear stroke motion, delimited by stops, between two end locations corresponding to the end positions of the workpiece table. Provided on the workpiece table is a mechanism which acts upon the toothed rack with a higher feed force at the beginning of the linear stroke movement than during the remainder of the linear stroke.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: May 14, 2002
    Inventor: Peter Grund
  • Publication number: 20020017161
    Abstract: An indexing mechanism comprises a disc 2 rotatable about a central axis, suitable for holding objects such as lenses. Detents 8 are provided on the disc which interact with a pawl 14 on a fixed surface adjacent the disc 2. When the disc rotates in a first direction the pawl 14 is deflected by each passing detent 8, returning to its rest position when the detent 8 is passed. When the disc is rotated in an opposite direction, the pawl 14 abuts a detent 8 to define an index position. The disc is driven or biased in this direction to retain this position. A stop 10 may be provided on the disc 2 adjacent each detent 8 which defines the position of the pawl 14 relative to the disc 2. The disc 2 may be driven by a motor 12 and drive means. An alternative system may be used in which lever 40 interacts with a plurality of protrusions 46 on the disc to rotate the disc in a first direction or bias the disc in a second direction so that the pawl 14 abuts a detent 8.
    Type: Application
    Filed: July 31, 2001
    Publication date: February 14, 2002
    Applicant: RENISHAW PLC
    Inventors: Andrew M. Woolfrey, Brian J. E. Smith, David R. McMurtry, Michael J. Hill
  • Patent number: 5860333
    Abstract: In the indexing mechanism, for producing rotary indexing of a primary sprocket or pulley, a locking bracket is operable to alternately lock or unlock the primary sprocket or pulley. At the same time, the locking bracket alternately unlocks or locks an endless chain or synchronous belt at a locking location. The chain or synchronous belt passes around the primary sprocket or pulley and past the chain or synchronous belt locking location. The chain or synchronous belt has first and second loops between the primary sprocket or pulley and the chain or synchronous belt locking location, on opposite sides thereof. First and second secondary sprockets or pulleys are mounted on the ends of first and second cylinder rods respectively, each secondary sprocket having one of the loops passing over it. The locking bracket is moved between two positions, to lock either the sprocket or pulley, or the chain or synchronous belt at the locking location.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: January 19, 1999
    Inventor: Geng-Jin Feng
  • Patent number: 5481944
    Abstract: An indexing device comprises an indexing table fixed to a table shaft rotatably supported on a body structure. A worm shaft is rotatably supported on the body structure and has a worm formed thereon. An indexing gear is fixed coaxially to the indexing table. The indexing device has a rotation correction device for stopping the rotation of the worm shaft prior to the indexing operation of the indexing table. The indexing device further has a positioning device for operating, after the worm shaft has been thus stopped, to impart a rotational torque to the indexing table and to cause a gear tooth face of the indexing gear to press against and hold a worm tooth face of the worm, whereby the precision of positioning of the indexing table is improved.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: January 9, 1996
    Assignee: Howa Machinery, Ltd.
    Inventors: Tetsuya Oketani, Toshio Ito
  • Patent number: 5341702
    Abstract: A system for calibrating a rotary table (10) includes an indexing table (20) (which is a Hirth coupling table) and an angular interferometer (100), together with a control (200). The indexing table is mechanically coupled to the rotary table (this being the only connection between the rotary table to be calibrated and the calibration system), and the interferometer is set up to measure rotation of the indexing table. During rotation of the rotary table (10) to a target angle, the control (200) monitors the interferometer reading, and when this reading exceeds a predetermined threshold, actuates a drive motor (240) of the table (20) to counter rotate the table, thereby to maintain the optics (106) of the interferometer in alignment with the laser beams (L2, L3) and thus enable continuous measurement of the position of the indexing table.
    Type: Grant
    Filed: April 13, 1993
    Date of Patent: August 30, 1994
    Assignee: Renishaw Transducer Systems Limited
    Inventors: Raymond J. Chaney, Jeffrey Graham
  • Patent number: 5297454
    Abstract: A device for rotationally indexing an indexing table by utilizing a synchronized tap function of a machine tool main spindle. The rotation and the axial feeding displacement of the main spindle are in a specific synchronized relation. When the main spindle is fed forward, it engages an input shaft of the indexing device and thrusts it to retract against a spring force. Upon arriving at a retracted position of the input shaft, the main spindle starts rotation in one direction. Because of a one-way clutch between the input shaft and the indexing table, the rotation of the input shaft imparted by the main spindle is not transmitted to the indexing table. After a predetermined angular rotation and an axial feed, the main spindle is rotated in the reverse direction to be withdrawn axially. At this time the one-way clutch operates to transmit the reverse rotation to the indexing table. The indexing device is of compact construction and ensures accurate indexing.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: March 29, 1994
    Assignee: Howa Machinery, Ltd.
    Inventor: Toshio Ito
  • Patent number: 5261147
    Abstract: An indexing system for the rotary work changer of a machining center for supporting and interchanging work-holder pallets between the machining zone and the load/unload zone of the machining center.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: November 16, 1993
    Assignee: Cincinnati Milacron Inc.
    Inventor: David B. Wood, III
  • Patent number: 5193658
    Abstract: The invention relates to an industrial robot with a stand (1) which is rotatably journalled in a base (2) and provided with a mechanical stop for limiting the rotary motion of the stand. The stop comprises at least one radially projecting stop arm (7), which in a certain rotational position makes contact with a stop pin (6) arranged on the base (2). The rotary moment is taken up by deformation of the stop pin (6). The stand (1) is provided with a plurality of recesses (8, 10) arranged around the periphery of the stand, whereas the stop arm (7) is formed with at least one fixing projection (12, 13) which is adapted to the recesses and which, with the aid of a wedge member (14), may be fastened into one of the recesses at an optional location on the periphery of the stand.
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: March 16, 1993
    Assignee: Asea Brown Boveri AB
    Inventor: Leif Tellden
  • Patent number: 5184525
    Abstract: A mobile component carrier in an instrument includes a disk with a scalloped periphery. A larger bearing and a smaller bearing are mounted on a support structure. The larger bearing has a radius greater, and the smaller bearing has a radius less than that of each of the scallops. The disk is urged into the bearings which have a relative spacing such that the larger bearing seats against two adjacent intersections of the scallops, and the smaller bearing seats against a dished surface between two other adjacent intersections.
    Type: Grant
    Filed: April 15, 1992
    Date of Patent: February 9, 1993
    Assignee: The Perkin-Elmer Corporation
    Inventors: Charles A. Brantingham, Timothy P. Sheridan
  • Patent number: 4944198
    Abstract: The tool-holder turret for lathes or like machining centers has a fixed support member (1; 52) bearing a rotary member (4; 51) to which there may be attached a tool-holder plate designed to bear a plurality of tools, each of which can brought into the operating position by the rotation of the rotary member, a drive motor (12; 54) also being provided, which is connected to a geared differential transmission unit (15, 18, 20; 47, 18, 20; 57, 64, 66) having three members, the first member, called the driver (15; 47; 57), being connected to the motor and controlling, on one hand, the opening and closing of the turret and, on the other hand, the rotation of its rotary member, the second member, which can be driven in rotation, of the differential unit (18; 18; 64) being connected to the rotary member and the third member, which can be driven in rotation, of the differential unit (20; 20; 66) being connected, via interposed cam transmission means (21, 23; 71, 72), to a rotationally fixed and axially movable member
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: July 31, 1990
    Assignee: Baruffaldi S.p.A.
    Inventors: Mario Natale, Pier C. Boffelli
  • Patent number: 4890514
    Abstract: A rotary indexing mechanism for indexing a shaft or shaft mounted member in precise rotary increments and with precise end-of-movement positioning includes a reciprocable rack and pinion mechanism coupled to a rotatably mounted shaft. The pinion is coupled to the shaft through a one-way clutch so that movement of the rack in a first direction is coupled through the clutch to cause a corresponding rotation of the shaft with the clutch uncoupling the shaft during movement of the rack in the opposite direction. A first stop member(s) is carried by the shaft for movement along a path that orbits the shaft axis. A second stop member is carried by the rack along a linear path that intersects the orbit of the first stop member. As the rack rotates the shaft through a rotary increment, the rack-carried second member is positioned in the orbit of the first stop member with the two members engaging to halt further rotary movement.
    Type: Grant
    Filed: March 9, 1988
    Date of Patent: January 2, 1990
    Assignee: The J. L. Wickham Co., Inc.
    Inventor: John L. Wickham
  • Patent number: 4841831
    Abstract: A reloader for reloading cartridges. A reciprocating plunger carries a turret that rotates around the axis of the plunger. The turret carries a plurality of cartridges for reloading, the cartridges being symmetrically spaced around the turret axis and adapted to be indexed around the axis in a step-by-step sequence. An overhead die holder contains a plurality of dies spaced in a symmetrical pattern similar to that of the cartridges but in fixed positions. A center opening in the die holder houses a rotatable bushing. The rotation of the bushing is controlled in part by a one-way clutch. An indexing shaft affixed to the turret extends from the turret axis through the bushing. The shaft has a multi-sided cross section and is slidably fitted to the bushing in a manner that prevents relative rotation. The configured cross section has an axial twist and when forced through the bushing by the reciprocating plunger, causes turning of one or the other of the shaft and turret or the bushing.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: June 27, 1989
    Inventors: Walter W. Bender, Charles A. Gaustad
  • Patent number: 4815339
    Abstract: An apparatus for stopping a rotating antenna shaft at a distinct position intermediate two end stop positions 23, 24. Paddle 12 on the rotating shaft 21 cooperates with intermediate stop assembly 26 to arrest bi-directional shaft rotation at an intermediate point when such stopping is desired, the intermediate stop assembly being activated by springs 38, 39 and deactivated by action of solenoids 30, 31.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: March 28, 1989
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Gary N. Bonadies, Mark O'Clair, David W. Parry
  • Patent number: 4816955
    Abstract: Robot joint with an electric drive motor (30), a limit switch (36) for a safety shut off of the same, and a sensor (100) for the zero position-scanning of the joint. The limit switch (36) is actuated by annular segment like platform pieces (50) which are securable in different angle positions on a front face of the one robot part (12). For this purpose, a divided support ring (72,74) is provided which is securable in different angle positions independent from the platform pieces (50) and which has a side face (96,98) which influences the sensor (100).
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: March 28, 1989
    Assignee: Robert Bosch GmbH
    Inventors: Joachim Bruns, Gerhard Gosdowski, Andreas Kettner, Udo Schwarze
  • Patent number: 4803765
    Abstract: An index head provided with a long rack and a short rack which are slided alternatively towards an index table by the movement of a pinion of a piston rod. The long rack which is characterized to move at a speed twice a forwarding speed of the piston rod, gives to the index table a revolution corresponding to desired divisions. Immediately upon the completion of said revolution of the index table, the short rack which becomes then movable at a speed twice the forwarding speed of the piston rod, brings about, in cooperation of the rotary movement of the pinion, the engagement of the piston rod with the index table, whereby inertia given to the index table through its revolution by the long rack is prevented so as to attain accurate divisions.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: February 14, 1989
    Assignee: Mikado Metal Industry Co., Ltd.
    Inventor: Hidetoshi Ito
  • Patent number: 4721017
    Abstract: A new and improved indexing table for supporting a workpiece on a machine tool and the like includes a base with a workpiece supporting table carried on a support shaft journaled for rotation to index the workpiece for machine tool operations. A drive system is provided for rotating the table in one direction about a longitudinal axis of the support shaft and an indexing wheel is provided on the shaft having a plurality of index slots spaced angularly around the periphery for securing the table in selected indexing positions. A shot pin is provided for engaging selected slots in the wheel to lock the table in a fixed position and when the shot pin is retracted, the table is then permitted to rotate toward a next indexing position.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: January 26, 1988
    Assignee: Snow Manufacturing Company
    Inventors: Arne R. Jorgensen, Dennis E. Tiberius
  • Patent number: 4676155
    Abstract: Independent control by a single motor of two members mounted on a shaft, e.g. print wheels in a printing machine such as a postal franking machine, is enabled by having the first member either fixed in rotation to the shaft or connected to the shaft by a one-way clutch, and having the second member connected to the shaft by a one-way clutch, the arrangement being such that rotation of the shaft in one direction causes movement of the first member only (by direct drive or by the action of the associated clutch) and rotation of the shaft in the other direction causes movement of the second member only, by the action of the associated clutch.
    Type: Grant
    Filed: November 30, 1984
    Date of Patent: June 30, 1987
    Assignee: PA Consulting Services Limited
    Inventors: Alan J. Harry, John Poley, Douglas S. MacArthur
  • Patent number: 4646100
    Abstract: An improved latch assembly which operates with a phased array radar antenna to fixedly retain the radar antenna in any one of several predetermined positions. The latch assembly comprises an elongated body member having a leading end section tapered to interfit into the detent means without jamming, a wedging member having a tapered wedge-like configuration which slidably interfits with the gradually tapered ledge of the body member, and a controllable spring-loaded actuating means operable to move the elongated body member and the wedge member into locking engagement with a predetermined detent and then to move the wedging member an additional small distance toward the predetermined detent, this causes the wedging member to be forced laterally an amount sufficient to contact the sides of the housing to effect a controlled wedging of the latch assembly in the housing to prevent any rotation of the radar antenna because of undesired clearances between the elongated body member and the housing.
    Type: Grant
    Filed: April 26, 1985
    Date of Patent: February 24, 1987
    Assignee: Westinghouse Electric Corp.
    Inventor: Forrest E. England
  • Patent number: 4606244
    Abstract: A workpiece indexing assembly which causes incremental rotation of a turntable from one work station position to another being actuated by a linearly translating driver. The mechanism includes an indexing hub having a number of radially spaced notches, a one-way clutch dog, a locking pawl and a driving dog. Upon retraction of the driver the driving dog becomes disengaged from one notch and is rotated until engagement occurs with another notch. Retraction also causes disengagement of the locking pawl. Rotation of the table is prevented during retraction by the one-way clutch. Upon extension of the actuator, the one-way clutch allows rotation. When the next work station position is reached, the locking pawl and the one-way clutch are reseated into hub notches. The driver is connected to the driving dog by a link featuring overcenter travel to insure firm locking of the turntable at a work station position.
    Type: Grant
    Filed: July 7, 1983
    Date of Patent: August 19, 1986
    Inventor: Anthony K. Schneemann
  • Patent number: 4520595
    Abstract: The invention relates to an automatic machine tool for machining workpieces, including a number n of workpiece receivers that can be adjusted in angular and/or spatial position and including an equal number n of work stations, one of said work stations being an exchange station, said receivers or stations being disposed at mutual angular separations of on a rotatable index table, said stations or said receivers being locally fixed thereon and said index table being advanceable in such a manner that each workpiece traverses all stations in the same sequence. By applying the invention reliable and precise machining, coupled with simple construction should be achieved. This is made possible by the fact that the drive of the index table is controllable so that a sequence of (n-1) rotary steps by in one direction is followed by a rotary step of (n-1)/n in the opposite direction.
    Type: Grant
    Filed: August 8, 1983
    Date of Patent: June 4, 1985
    Assignee: Gottlieb Guhring
    Inventor: Herbert Diener
  • Patent number: 4470483
    Abstract: A braking pad device for a bicycle which includes two separate braking pads of different compositions. One braking pad is particularly suitable for use in dry weather, while the second braking pad is particularly suitable for use in wet weather. The braking pads are to be movable to be located in position for use.
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: September 11, 1984
    Inventor: Leonard J. Holtz
  • Patent number: 4440291
    Abstract: A drive mechanism for reciprocating and multiple step index devices which includes a modified higher harmonic addition which can achieve a significantly longer substantially vertical path at the beginning and end of the overall longitudinal path which assists in unloading and loading workpieces from and into various fixtures.
    Type: Grant
    Filed: February 10, 1982
    Date of Patent: April 3, 1984
    Inventor: John H. Brems
  • Patent number: 4189963
    Abstract: An index apparatus for indexing a rotary table rotatably and vertically slidably received within a base, comprises a pair of coupling members secured to the rotary table and the base, respectively, and engageable with each other. The rotary table is lifted and lowered by a hydraulic actuator. The rotary table is rotated by a drive means including a drive motor. Generating means are provided to generate a signal each time the rotary table is rotated a unit angle. Control means are provided to reduce the rotational speed of the rotary table in response to the number of signals generated from the generating means, when the rotary table is rotated to a position spaced a predetermined angular distance from a desired angular position thereof. Control means also cause the rotation of the rotary table to stop in response to the number of signals from the generating means, when the rotary table is rotated to the desired angular position thereof.
    Type: Grant
    Filed: July 26, 1978
    Date of Patent: February 26, 1980
    Assignee: Toyoda-Koki Kabushiki-Kaisha
    Inventors: Yoshikazu Sano, Kyosuke Haga, Kengo Yoshioka
  • Patent number: 4159658
    Abstract: An economical rotary index table holds workpieces on machine tool beds and tables, changing rotational position in angular increments with precision. Accurate angular indexing is achieved by a curvic coupling with meshing radial teeth disengageably connecting an axially movable locking plate to the juxtaposed facing rotational worktable member, separate and apart from the drive system. An annular, axially expansible pneumatic chamber is employed to engage and disengage the curvic coupling teeth, alternately locking the worktable in the desired angular orientation, and unlocking it for angular indexing movement. In the preferred embodiment, the movable angular indexing apparatus of the present invention incorporates automatic counting means for precisely determining the degree of rotation and automatic stop means for preventing further rotation when the desired position has been reached.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: July 3, 1979
    Assignee: Bridgeport Machines Division of Textron Inc.
    Inventor: Edward J. Parkinson
  • Patent number: 4151759
    Abstract: An indexing table for machine tools having a stationary table portion and a movable table portion arranged for rotatable movement relative to the stationary table portion. Coupling elements are disposed between the stationary and movable table portions for controlling rotational movement therebetween and thus movement between the respective indexing positions of the table.
    Type: Grant
    Filed: June 22, 1977
    Date of Patent: May 1, 1979
    Inventor: Heinz Buchmeier
  • Patent number: 4109552
    Abstract: An indexing mechanism for the rotatable element of a machine tool wherein a shaft is coaxial with the element and has formed thereon a helicoidal groove. A control member is engaged in said groove and moves alternately therein to transmit an oscillating rotative movement to the shaft to effect go-and-back movements along the groove in a direction parallel to the axis of rotation of the rotatable element. A control cam effects go-and-back movements which are synchronized with the movements of the control member. A driving member is mounted on the shaft for rotation therewith and is capable also of axial movement between one position in which it is rigid with the element and a second non-rigid position. The axial movement of the driving member is controlled by the cam. Accordingly, during the go movements of the control member and of the cam, the driving member is rigid with the element.
    Type: Grant
    Filed: December 13, 1976
    Date of Patent: August 29, 1978
    Assignee: Imoberdorf & Co.
    Inventor: Markus Imoberdorf
  • Patent number: 4103569
    Abstract: A programming cam indexing mechanism in which a rotatable programming cam, provided with a peripheral traction surface and a concentric inwardly facing track having one or more notches therein to define indexed programming positions, is rotatably driven by a capstan coupled with a drive shaft, the capstan being supported by a latch member pivotal on the drive shaft axis. The latch member is integrally formed to define a follower bracket and tab engageable with the inwardly facing track surface on the programming cam to hold the capstan in engagement with the peripheral traction surface thereof but to allow the capstan to swing away from driving engagement with the traction surface when the follower bracket tab drops into the positioning notches. A spring biasing means is provided by which the follower bracket tab is moved into the notches to latch the programming cam in any one of the indexed positions. Movement out of the notches is effected by solenoid activation.
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: August 1, 1978
    Assignee: Polaroid Corporation
    Inventor: Paul W. Thomas
  • Patent number: 4079637
    Abstract: The invention relates to a tape handling device associated with a picture-taking (recording) or reproducing (replay) device having a drive motor, a transmission gear to be actuated by the motor, a reversing device for reversing the sense of rotation of the drive consisting of the motor and gear train, and a control device likewise actuated by the motor.
    Type: Grant
    Filed: July 10, 1975
    Date of Patent: March 21, 1978
    Assignees: Karl Vockenhuber, Raimund Hauser
    Inventors: Johann Nowak, deceased, Robert Scheiber, Heinrich Cap, by Otto Gesselauer, legal representative, by Leopold Srb, legal representative
  • Patent number: 4075911
    Abstract: A drive mechanism for a reciprocating and multiple step index mechanism to achieve smooth starting and stopping action with controlled acceleration and decleration. It is characterized by extremely flexible kinematic characteristics achieved by the superposition of a constant velocity, fundamental and a higher harmonic component. The mechanism utilizes pairs of rotating drive members and eccentric members mounted in non-rotational relation, the pairs being connected to rotate in a multiple integral angular velocity ratio. An output member is arranged in driving relation to one of the eccentric members and is influenced also by the rotation of the other eccentric member. Power input is directed to one of the pairs of drive members.
    Type: Grant
    Filed: May 15, 1975
    Date of Patent: February 28, 1978
    Inventor: John Henry Brems
  • Patent number: 3965775
    Abstract: An indexing mechanism for converting reciprocating motion into intermittent rotary or linear motion. Driving elements engage driven elements during each motion of the reciprocating member in either direction to effect intermittent motion of the workpiece in the desired location. The driving elements also include locking means to limit the motion imparted by the reciprocating member and lock the driven elements in place until the reciprocating member moves in the opposite direction. Several different embodiments are disclosed employing the same inventive principles.
    Type: Grant
    Filed: December 27, 1974
    Date of Patent: June 29, 1976
    Inventor: Mordehay Pinkesfeld