Patents by Inventor Donald C. Kilgrow

Donald C. Kilgrow 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: 5775832
    Abstract: A compact tire deflator is disclosed in one preferred embodiment of the present invention as comprising a compact housing member having a first panel pivotally disposed in relation to a second opposing panel by means of a pivotol engagement. In structure, the housing member comprises an internal surface area being sufficient for housing at least one spike mounting assembly further disposed in pivotal relation to the pivotal engagement. Preferably, the mounting assembly is formed having one or more hollow spikes removably disposed in relation to a compression sleeve which operably engages the bottom end of the hollow spike for introduction within a spike seat. A structural stop is preferably formed in relation to the first and second panels of the housing member and the spike mounting assembly to provide a means for maintaining the first and second panels at an angular disposition to the spike mounting assembly when the compact tire deflator is disposed in an open position.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: July 7, 1998
    Inventors: Donald C. Kilgrow, Melvin H. Pederson
  • Patent number: 5253950
    Abstract: An improved vehicle tire deflator that is a foldable and can be deployed by pushing it or pulling it to an extended attitude across at least one full traffic lane. The deflator includes a plurality of rocker arms that are each pivotally coupled to base supports, forming a frame that is collapsible and when extended, includes a stop arrangement for holding the rocker arms apart. The rocker arms each include a plurality of actuators that incorporate spaced center holed and countersunk spike base bosses, each boss to accommodate an end of a hollow spike and attached resilient grommet fitted therein.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: October 19, 1993
    Inventors: Donald C. Kilgrow, Melvin H. Pedersen
  • Patent number: 4995756
    Abstract: A vehicle tire deflator comprising a foldable and extendible frame with one or more rocker arms releasably carrying hollow spikes and having rocker arm actuators attached to the rocker arms to pivot said arms to position the spikes to enter a tire rolling over the deflator and to hold the rocker arm in position as the spike is withdrawn from the rocker arm.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: February 26, 1991
    Inventors: Donald C. Kilgrow, Linda Kilgrow, Melvin H. Pedersen
  • Patent number: RE35373
    Abstract: An improved vehicle tire deflator that is a foldable and can be deployed by pushing it or pulling it to an extended attitude across at least one full traffic lane. The deflator includes a plurality of rocker arms that are each pivotally coupled to base supports, forming a frame that is collapsible and when extended, includes a stop arrangement for holding the rocker arms apart. The rocker arms each include a plurality of actuators that incorporate spaced center holed and countersunk spike base bosses, each boss to accommodate an end of a hollow spike and attached resilient grommet fitted therein.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: November 5, 1996
    Inventors: Donald C. Kilgrow, Melvin H. Pedersen