Patents by Inventor Robert A. Jaeger

Robert A. Jaeger 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).

  • Fluid valve mechanism and valving method
    Patent number: 5421358
    Abstract: A piston fluid valve mechanism and method, wherein annular outer and core inner coaxial valve members are adapted to move to and fro slidably relative to one another and to bar upstream-to-downstream fluid flow when mutually juxtaposed into seated position but adapted to enable such flow when spaced apart in unseated position.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: June 6, 1995
    Inventor: Robert A. Jaeger
  • Balanced piston fluid valve
    Patent number: 5309934
    Abstract: Balanced piston fluid valve, wherein annular outer and core inner coaxial valve members are adapted to move to and fro slidably relative to one another and to bar upstream-to-downstream fluid flow when mutually juxtaposed into seated position but adapted to enable such flow when spaced apart in unseated position.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: May 10, 1994
    Inventor: Robert A. Jaeger