Patents by Inventor Kuan-Jen Jeng

Kuan-Jen Jeng 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: 7861612
    Abstract: A range selection control system for a transmission facilitates safe operation of a power take off. A fluid actuated range piston assembly within a range cylinder moves between low range and high range positions. Range cylinder and range piston assembly define sealed high range and low range chambers. A neutral cylinder intersects range cylinder. A fluid actuated neutral piston assembly within neutral cylinder defines a neutral chamber. Neutral piston assembly engages range control piston assembly responsive to pressurization of neutral chamber. Neutral piston assembly is received by an engagement feature of range piston assembly when range control piston assembly is in a neutral position, retaining range piston assembly there. An electrically responsive locking mechanism locks neutral piston assembly in place when range piston assembly is in the neutral position. The locking is controlled by a condition of an electrical switch indicating a transmission condition.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: January 4, 2011
    Assignee: Eaton Corporation
    Inventors: Kuan-Jen Jeng, Mark A. Hirsch, Thomas N. Riley, C. David Bradley
  • Publication number: 20080236322
    Abstract: A range selection control system for a transmission facilitates safe operation of a power take off. A fluid actuated range piston assembly within a range cylinder moves between low range and high range positions. Range cylinder and range piston assembly define sealed high range and low range chambers. A neutral cylinder intersects range cylinder. A fluid actuated neutral piston assembly within neutral cylinder defines a neutral chamber. Neutral piston assembly engages range control piston assembly responsive to pressurization of neutral chamber. Neutral piston assembly is received by an engagement feature of range piston assembly when range control piston assembly is in a neutral position, retaining range piston assembly there. An electrically responsive locking mechanism locks neutral piston assembly in place when range piston assembly is in the neutral position. The locking is controlled by a condition of an electrical switch indicating a transmission condition.
    Type: Application
    Filed: April 2, 2007
    Publication date: October 2, 2008
    Applicant: Eaton Corporation
    Inventors: Kuan-Jen Jeng, Mark A. Hirsch, Thomas N. Riley, C. David Bradley
  • Patent number: 5297855
    Abstract: A banjo-type axle housing includes a hollow central member having a pair of hollow tubes extending outwardly therefrom. Forwardly and rearwardly facing openings are formed in the central member, each having triangularly shaped side portions located adjacent to the tubes. In a first embodiment, a pair of triangularly shaped support plates are disposed within the side portions and secured to the central member so as to completely close them. In a second embodiment, a pair of modified baffle plates are provided, each including a central baffle portion having an opening formed therethrough and a pair of triangularly shaped side portions formed integrally with the central baffle portion. The side portions are bent so as to extend generally perpendicular relative to the central baffle portion. The modified baffle plates are secured to the central member of the axle housing and perform the functions of the separate baffle plates and side portions of the first axle housing.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: March 29, 1994
    Assignee: Dana Corporation
    Inventor: Kuan-Jen Jeng