Patents by Inventor James C. Frank

James C. Frank 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: 5146196
    Abstract: A solenoid has a coil energizable to displace an armature in one direction and a spring urging return of the armature in the other direction to a rest position in which an end of the armature engages a stop. The end of the armature has a conical projection machined thereon which projects from the end thereof. The stop is a resilient grommet having conical bore therein so that the rest position of the armature is defined by the spring urging the armature to the rest position with the conical projection of the armature resting in the conical bore of the stop to thereby provide noise-free and rattle-free positioning of the armature at the rest position.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: September 8, 1992
    Assignee: General Motors Corporation
    Inventor: James C. Frank