Patents Represented by Law Firm McGrew & Tuttle
  • Patent number: 4843272
    Abstract: A miniature motor having brushgear comprising brush arms with sliding parts on the tips thereof, terminals and brush bases; the brush bases being supported by a motor case cover plate, when the terminals are inserted in brush holes provided on the motor case cover plate; the sliding parts being brought into sliding contact with a commutator by the resiliency thereof, and characterized in that a flexible photo-setting resin having similar resiliency to the resiliency of vibration-damping rubber is applied to the brush arms to prevent the brushes from unwantedly vibrating during rotation of the commutator.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: June 27, 1989
    Assignee: Mabuchi Motor Co., Ltd.
    Inventor: Kazuichi Mabuchi
  • Patent number: 4823329
    Abstract: In the electric timer having an analog time display and a disk-or ring-shaped program carrier programmable by means of slide contacts, the program carrier is settable selectively by means of a switching device to different synchronous speeds of rotation, namely one revolution per week or one revolution per day. To this end two drive rings concentric with the axis of rotation of the program carrier are provided, of which one revolves at a speed of one revolution per day and the other at one revolution per week. The program carrier can be coupled selectively with one of the two drive rings by means of a coupling member adjustable to radii of different size on the same radius vector. While the drive ring revolving at the slow speed can be coupled with the program carrier in seven different angular positions, for the drive ring which revolves once a day only a single angular position exists in which it can be coupled with the program carrier.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: April 18, 1989
    Assignee: Theben-Werk Feitautomatik GmbH
    Inventors: Lukas Schwer, Manfred Karger