Patents by Inventor Kenneth Chen

Kenneth Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6283226
    Abstract: A clutch-buffer assembly for power wrench comprises a driven wheel having an outwardly extended positioning tube disposed at a power-input end thereof. A retaining spring, a retaining disc, a driven gear, an anchor ring, and a reversible motor are collared onto the positioning tube sequentially, wherein the retaining disc is limited to move back and forth along the positioning tube without rotation; a pair of protruding teeth and reception cavities in respective contact faces of the retaining disc and the driven gear; and the reversible motor is used to drive the driven gear. When the driven wheel rotates at a higher speed, the retaining disc can be detached from the driven gear for control of the power consumption to lessen the imposed load in order not to blow the fuse, by this way the power wrench can generate larger output torque. Also, the retaining disc can be detached from the driven gear to alleviate the backlash caused by recoil of the driven wheel when impacting.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: September 4, 2001
    Inventor: Kenneth Chen
  • Patent number: 6119794
    Abstract: Disclosed herein is an improved impact wrench structure comprising a reversible motor, a motor bracket, a hammer, driven wheel, a sealing adaptor, a transmission shaft, a clutch plate, two coil springs, and a set pin. The impact wrench according to the present invention has an improved largely simplified structure for facilitating manufacturing process and low cost, also is usable for replacing a flat tire on the way of driving by utilizing automobile power supply in stead of dragging the automobile to a repair shop for replacing the flat tire.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: September 19, 2000
    Inventor: Kenneth Chen
  • Patent number: 5887666
    Abstract: Disclosed herein is an improved impact wrench structure, particularly an impact wrench for tightening and loosening fasteners for vehicle tires, it has a reversible motor as a power source to drive a drive wheel at a high speed so that flyweight sides of two hammers provided inside the drive wheel bound outwards by a centrifugal force.The knocking sides of the two hammers drop downwards, impacting and engaging with reception blocks of the transmission shaft and transmit output power to the transmission shaft. Such actions are repeated to perform the expected function of the novel impact wrench for tightening or loosening fastening components. The structure of the novel impact wrench of the present invention is more simple in construction, more practical in application, convenient in production and much saving cost compared to a conventional one.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: March 30, 1999
    Inventors: Kenneth Chen, Chi Yu Lo
  • Patent number: 5157951
    Abstract: A steering lock comprising a lock bar having one end pivotably secured to an U-shaped plate at a hooked end of an actuating bar and an opposite end attached with a forked stop bar through screw joint, wherein said lock bar is locked in line with said actuating bar by a lock cylinder in said U-shaped plate when the forked end of said forked stop bar and the hooked end of said actuating bar are respectively stopped at the periphery of a steering wheel at two opposite locations.
    Type: Grant
    Filed: November 29, 1991
    Date of Patent: October 27, 1992
    Assignee: Interflow Corp.
    Inventors: Kenneth Chen, Jesse Huang
  • Patent number: D437317
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: February 6, 2001
    Assignee: Cisco Technology, Inc.
    Inventors: Arthur G. Howarth, Hitesh Sheth, Craig Strachman, Kenneth Chen, Mathew E. Schmitz, Daniel K. Harden
  • Patent number: D455424
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: April 9, 2002
    Assignee: Cisco Technology, Inc.
    Inventors: Hitesh Sheth, Wesley Mukai, Kenneth Chen, Craig Strachman
  • Patent number: D356800
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: March 28, 1995
    Inventor: Kenneth Chen