Patents by Inventor Harvey C. Rettberg

Harvey C. Rettberg 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: 4219749
    Abstract: A housing for a power tool having an access aperture for mounting the brushes of a universal motor which is journaled in the housing. Tabs hold the brushes within a recess, and screws are threadedly connected to the housing to clamp the tabs. A cover is substantially "U" shaped and has posts extending inwardly in superposition to the screws to prevent the screws from backing out due to vibration or other loosening thereof.The cover fits between an upper and a lower housing extension and provides a smooth continuous outer configuration, through which vent slots permit the passage of cooling air.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: August 26, 1980
    Assignee: The Singer Company
    Inventor: Harvey C. Rettberg
  • Patent number: D262184
    Type: Grant
    Filed: January 22, 1980
    Date of Patent: December 8, 1981
    Assignee: The Singer Company
    Inventors: James L. Glass, Harvey C. Rettberg, Richard N. Ryer, II, James R. Sistare
  • Patent number: D262772
    Type: Grant
    Filed: January 22, 1980
    Date of Patent: January 26, 1982
    Assignee: The Singer Company
    Inventors: James L. Glass, Harvey C. Rettberg, Richard N. Ryer, II, James R. Sistare