Patents by Inventor Robert E. Schreiber

Robert E. Schreiber 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: 4059776
    Abstract: An electric motor frame has a brush-receiving recess beside the commutator. The recess has top and bottom walls and an insulating brush housing is disposed in the recess where it is held in fixed position. Slidable lengthwise in the housing is a brush, between one side of which and the housing there is a stationary metal strip that extends substantially full length of the housing and has an outer end portion extending transversely of the brush. Compressed between this end portion of the strip and the brush is a coil spring that holds the brush against the commutator. An electrical conductor engages the strip, while a flexible wire electrically connects the strip with the brush. The brush housing is provided with at least one exterior rib extending lengthwise of it, and one of the walls of the frame recess has a groove in it that snugly receives the rib to accurately position the housing in the frame.
    Type: Grant
    Filed: April 19, 1976
    Date of Patent: November 22, 1977
    Assignee: Stackpole Carbon Company
    Inventors: Robert E. Schreiber, Edward J. Zelt