Actuators Patents (Class 104/36)
  • Patent number: 8424458
    Abstract: An embodiment of the present invention is a rotating structure. An outer ring is placed on a first surface of a trench in a foundation having a ground surface. An inner ring is positioned inside the outer ring on the first surface. A bar assembly is positioned between the outer ring and the inner ring. A plurality of rollers supports the bar assembly. A plurality of motors engages to the bar assembly to cause the bar assembly to rotate when activated.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: April 23, 2013
    Inventor: Eric Holt
  • Patent number: 8424459
    Abstract: An embodiment of the present invention is a rotating structure. An outer ring is placed on a first surface of a trench in a foundation having a ground surface. An inner ring is positioned inside the outer ring on the first surface. A bar assembly is positioned between the outer ring and the inner ring. A plurality of rollers supports the bar assembly. A plurality of motors engages to the bar assembly to cause the bar assembly to rotate when activated.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: April 23, 2013
    Inventor: Eric Holt
  • Patent number: 7631602
    Abstract: A low profile turntable device constructed of wedge shaped sections with structural foam in between, support rollers on the bottom skin, a plurality of reversible drive motors inside a plurality of outer ramps around the exterior, and a concentric circular and perpendicular lateral band system for mounting the turntable on a surface.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: December 15, 2009
    Inventor: William V. Schwenker
  • Patent number: 5755160
    Abstract: A rotating floor is provided for rotating a motor vehicle so that the motor vehicle attains a new heading. The rotating floor includes a platform supporting the motor vehicle. The platform is supported above-ground by a plurality of wheels oriented in concentric circles which run along races oriented in concentric circles. A motor is provided with an output shaft coaxial with a rotational center point of the platform. The motor is connected to the platform in a direct drive relationship. A chamber is oriented beneath the platform and housing the motor. The chamber can be accessed through a manhole in the platform and is sized sufficiently to allow a person to enter therein for maintenance to the motor. A tunnel is provided extending from the chamber which provides a person with access to a bottom of the platform.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 26, 1998
    Inventor: Charles Nathaniel Blufordcraving
  • Patent number: 5709519
    Abstract: A plasma processing apparatus for etching, ashing, or otherwise processing silicon wafers has a pair of spaced reaction chambers each for processing a silicon wafers in a plasma, a pair of spaced cassette table mechanisms each for supporting a wafer cassette which houses a plurality of wafers therein, and a transfer robot disposed between the pair of spaced reaction chambers and the pair of spaced cassette table mechanisms, for transferring the wafers, one at a time, between the wafer cassette supported by one of the workpiece table mechanisms and one of the reaction chambers. Each of the cassette table mechanisms has a turntable for placing the wafer thereon, the turntable being rotatable to orient the wafer cassette out of physical interference with the robot arm of the transfer robot.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: January 20, 1998
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Akira Uehara, Mitsuaki Minato, Yoshitsugu Kawamura
  • Patent number: 5086704
    Abstract: An improved motor vehicle turntable is provided that may be installed in any location, typically in front of a garage for the purpose of rotating a vehicle so as to enable it to leave the area in the opposite direction from which it entered the garage. The motor vehicle turntable has a circular vehicle receiving platform supported by a polygonal support frame. The receiving platform and support frame are received within a cylindrical pit so that the upper surface of the platform is level with the surrounding terrain into which the pit is formed. A chain drive frictionally engages the perimeter of the polygonal support frame to rotate the receiving platform when the chain is moved by means of a drive motor and sprocket arrangement.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: February 11, 1992
    Assignee: Michael E. Mueller
    Inventor: Wieland R. Mueller
  • Patent number: 4777884
    Abstract: An automatically operated turntable is designed to reverse the direction of a vehicle parked in a driveway. The turntable is pivotally mounted on a rotatable shaft, and a small gear driven motor is utilized to rotate the turntable. Inasmuch as the front of an automobile is heavier than the rear end, when the vehicle is parked forwardly on the turntable, a weight sensitive switch activates the motor to effect a rotation of the turntable. When the vehicle has rotated 180 degrees, the opposite tilting of the table deactivates the weight sensitive switch so as to disable the motor drive.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: October 18, 1988
    Inventor: George A. Seay, Jr.
  • Patent number: 4429636
    Abstract: A driverless vehicle turntable includes a table pivotably mounted for movement about a vertical axis. The table has tracks and a drive tube as well as drive wheels. An arcuate drive tube assembly is arranged for frictional contact with the drive wheels.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: February 7, 1984
    Assignee: SI Handling Systems, Inc.
    Inventor: Barry L. Ziegenfus
  • Patent number: 4298307
    Abstract: A power rotation apparatus for an air float fixture support system of the type including a table having an upwardly facing upper surface adapted for supporting a workpiece fixture thereon, and a pressurized fluid system for supplying a cushion of pressurized air or other fluid between the surface of the table and the workpiece fixture so as to floatingly support the fixture thereon for virtually friction-free movement. The power rotation apparatus comprises one or more pins rotatably mounted within the table and having a portion thereof extending upwardly from the table surface, and a motor-gear or hydraulic direct drive arrangement within the table for rotating the pin or pins about respective axes normal to the upper surface of the table. The pin is suitably shaped so that it is keyed to an opening, such as a slot, in the lower surface of the fixture thereby causing the fluid support fixture to be rotated in unison with the pin.
    Type: Grant
    Filed: October 29, 1979
    Date of Patent: November 3, 1981
    Inventor: Raymond A. Bergman
  • Patent number: 4278381
    Abstract: A shuttle rail assembly, capable of carrying a pair of pallets to which workpieces are fixtured, is mounted on a wheeled vehcile movable along a pair of tracks extending adjacent machine tools and set-up stations. The vehicle is positively driven by a DC motor and pinion, mounted on a adjustable eccentric, which meshes with a toothed rack secured to one of the pair of tracks. A vertical standard extending upward from the vehicle is slidable along power and control electrical buses contained within an enclosed overhead trolley. The shuttle rail assembly includes a pair of rails, extendable to either side of the vehicle by a hydraulic rail motor, mounted on a platform rotatable by a hydraulic index motor to 180.degree. positions when pallets are to be interchanged, and having a 90.degree. latched position during vehicle travel.
    Type: Grant
    Filed: October 8, 1976
    Date of Patent: July 14, 1981
    Assignee: White-Sundstrand Machine Tool, Inc.
    Inventors: Robert E. Blomquist, Charles R. Reynolds