By Lead Screw Patents (Class 369/223)
  • Patent number: 4788677
    Abstract: A support mechanism for a disk player in which a turntable is supported on a metal plate which is screwed to a resin plate. A carriage carrying an optical pickup and its drive are mounted on the resin plate between the two plates but the carriage is guided by the metal plate. The optical pickup tracks the disk through an opening in the metal plate.
    Type: Grant
    Filed: February 5, 1987
    Date of Patent: November 29, 1988
    Assignee: Pioneer Electronic Corporation
    Inventors: Yuji Ikedo, Kenichi Takahashi
  • Patent number: 4713707
    Abstract: A contactless (flying) transducer for scanning a record or recording disc is mounted near the free end of a pivoted arm which is driven in rotation about its pivot by the tangential drive provided by a restrained nut on a threaded motor-driven spindle. A pin extending fron the nut slides without play in a lengthwise groove at the free end of the arm. Rapid operation of the electric motor makes it easy to shift from one part of the record to another and slow movement makes it easy to register precisely with a track. Still finer movement is possible electrically by shifting the transducer on the arm.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: December 15, 1987
    Assignee: Robert Bosch GmbH
    Inventor: Frieder Heizmann
  • Patent number: 4613967
    Abstract: An apparatus for reproducing information signals recorded in spiral or coaxial tracks of a record disc includes a pick-up device operative, upon scanning of a track of the disc while the latter is rotated, to reproduce the information signals recorded in the scanned track; a driver for rotating the record disc relative to the pick-up device; a tracking device for controlling the tracing of the tracks by the pick-up device; a transporting device for bodily moving the pick-up device in a radial direction in respect to the axis of rotation of the record disc and thereby normally determining the tracks to be scanned by the pick-up device; and a controller selectively operative for causing the pick-up device to intermittently trace nonadjacent groups of tracks so as to intermittently reproduce the information signal recorded in the nonadjacent groups of tracks, respectively.
    Type: Grant
    Filed: April 27, 1982
    Date of Patent: September 23, 1986
    Assignee: Sony Corporation
    Inventors: Yuichiro Hamada, Kazuhiko Fujiie, Masanori Ohtawa, Chiaki Nonaka, Tadao Yoshida, Yoshiaki Haneda
  • Patent number: 4535437
    Abstract: A pickup arm driving control system in record disc players with repeat playback function. The driving control system can drive the manipulation of a tone arm in such a manner that only an optionally selected portion is repeatedly reproduced.
    Type: Grant
    Filed: December 16, 1982
    Date of Patent: August 13, 1985
    Assignee: Trio Kabushiki Kaisha
    Inventor: Satoshi Hiranuma
  • Patent number: RE31401
    Abstract: An electronic timepiece having an A.M. and P.M. display function. The characters A or P are displayed during time setting or correction by one discretionary display element of a plurality of display elements normally used for displaying time.
    Type: Grant
    Filed: March 4, 1981
    Date of Patent: October 4, 1983
    Assignee: Kabushiki Kaisha Daini Seikosha
    Inventor: Yasuo Kusumoto