Patents by Inventor Martin C. Pettesch

Martin C. Pettesch 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).

  • Check valve shear fitting with test port
    Patent number: 5213137
    Abstract: A shear fitting for coupling a downstream vertical conduit to an upstream vertical conduit in, for example, an underground suction-type fuel delivery system, includes a hollow body defining a fluid flow passage between an inlet in an upstream body portion and an outlet in a downstream body portion. The upstream body portion is configured to be removably coupled to the upstream conduit, and the downstream body portion is configured to be removably coupled to the downstream conduit. The body has a peripheral shear groove defining a frangible annular wall portion that fractures in response to a shear force of more than a predetermined magnitude. A test port extends from the flow passage to the exterior of the body, the port being sealed by a removable closure. Removal of the closure results in a loss of prime in a suction-type fuel delivery system only if there is no check valve in the conduit upstream from the shear fitting, thereby allowing verification of the absence of such a check valve.
    Type: Grant
    Filed: July 24, 1991
    Date of Patent: May 25, 1993
    Assignee: Universal Valve Company, Inc.
    Inventor: Martin C. Pettesch
  • Observation monitoring well manhole cover
    Patent number: D309024
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: July 3, 1990
    Assignee: Universal Valve Company, Inc.
    Inventor: Martin C. Pettesch
  • Ring for a manhole cover
    Patent number: D319883
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: September 10, 1991
    Assignee: Universal Valve Company, Inc.
    Inventors: Martin C. Pettesch, Robert O. Andreasen
  • Underground service vault
    Patent number: D320281
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: September 24, 1991
    Assignee: Universal Valve Co., Inc.
    Inventor: Martin C. Pettesch
  • Hose retractor for gasoline pumps
    Patent number: D321469
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: November 12, 1991
    Assignee: Universal Valve Company, Inc.
    Inventor: Martin C. Pettesch
  • Sealing plug for a monitoring well
    Patent number: D326500
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: May 26, 1992
    Assignee: Universal Valve Company, Inc.
    Inventor: Martin C. Pettesch