Gear Drive Patents (Class 74/10.8)
  • Patent number: 8498560
    Abstract: A fixing device and an image forming apparatus using this, in which even if permanent warping is produced on a roller member that forms a fixing nip portion, no collision sound is produced due to the collision of gears, the fixing device including: two roller members that form a nip portion in which a recording medium is pressed by pressure means and transported; and a drive gear that engages with a shaft portion of one of the two roller members and transmits driving force to that roller member. A key is formed in the drive gear and a key groove having a gap opened therein is formed in the shaft portion, and when a rotation velocity of the roller member increases, transmission of driving force from the drive gear to the shaft portion is suspended and the drive gear slides on the shaft portion.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: July 30, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohta Sakaya, Shigeo Nanno, Tamotsu Ikeda
  • Publication number: 20090233747
    Abstract: A drive mechanism includes a drive assembly including a driven element, a first driveshaft, configured to be engaged with the drive assembly, the first driveshaft configured to rotate in a first direction and relate a first assembly torque to the drive assembly and a first drive torque to the driven element, and a torque adjusting mechanism operatively engaged with the drive assembly and configured to relate a second assembly torque, opposite in direction to the first assembly torque, to the drive assembly.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: SoftScope Medical Technologies, Inc.
    Inventors: Timothy P. Sheridan, John J. Allen
  • Patent number: 7584682
    Abstract: An adjustment device with a dual-guiding structure has two worm wheels respectively meshed with two coaxial worm gears. The two worm gears are pivotally and longitudinally fixed by a driving shaft in line. An adjacent end of each worm gear has a locking recess to receive a locking head mounted on the driving shaft. Thereby, the locking head is selectively engaged with the locking recess of one of the worm gears to drive the corresponding worm gear when the locking head on the driving shaft is reciprocated. Then, one worm wheel engaged with the corresponding worm gear is rotated to rewind or release the wires on the work wheel.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: September 8, 2009
    Assignee: Chern Shing Top Co., Ltd.
    Inventor: Hsueh-Sheng Hsiao
  • Patent number: 7259536
    Abstract: A solar powered mobile, comprising a drive housing fitting within a case, a solar cell panel fitted within the top of the drive housing, a clear cover over the solar cell panel, a removable DC motor with speed control driven by the solar cell panel, gears connecting the motor to a bearing which provides fastening of a spinner or other device for display.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: August 21, 2007
    Inventor: Cheryl L. Ketner
  • Patent number: 7044023
    Abstract: A knob adjustment device particularly for adjusting the temperature in valve units for water-heating apparatus. The device comprises a geared transmission interposed between the knob and an operating member of the valve unit in order to transmit a rotary movement to the member about its own axis as a result of a rotation of the knob. The geared transmission includes a reduction mechanism with a variable transmission ratio such that, for a first angular portion and a second angular portion of the rotation of the knob, the member is rotated with respective different transmission ratios (T1,T2).
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: May 16, 2006
    Assignee: Sit La Precisa S.p.A.
    Inventors: Alessandro Toniolo, Stefano Zanella, Silvano Zanon