Patents by Inventor Jack Weigand

Jack Weigand 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).

  • Device for measuring exhaust flowrate using laminar flow element
    Patent number: 5837903
    Abstract: An apparatus for determining the exhaust flowrate from an internal combustion engine (112) includes a laminar flowmeter (116). The flowmeter includes a capillary section (18) of ceramic material including an array of capillary tubes. Signals from a differential pressure sensor (128) which measures pressure loss across the capillary section as well as an absolute pressure sensor (126) and a temperature sensor (130) are input to a computer (134). The computer is programmed to calculate the flowrate of exhaust gas from the engine through its operating range.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: November 17, 1998
    Assignee: The Scott Fetzer Company Inc.
    Inventor: Jack Weigand
  • Scope mount
    Patent number: D383826
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: September 16, 1997
    Assignee: Weigand Combat Handguns, Inc.
    Inventor: Jack Weigand