Patents by Inventor Charles E. Barnum

Charles E. Barnum 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).

  • Clutch for tire lift/carrier winch
    Patent number: 5277288
    Abstract: A clutch for a tire lift/carrier winch includes a drive plate and a driven plate having a plurality of elongate springs thereon. The driven plate includes circumferentially spaced driven end portions which are positioned in driving engagement with circumferentially spaced drive portions of the drive plate to permit rotation of the driven plate upon rotation of the drive plate when the load on the cable winding spool is within a prescribed limit. However, when the load on the cable winding spool exceeds the prescribed limit, the elongate springs on the driven plate function as cantilevered spring segments deflectable about respective fulcrums in such a manner as to prevent rotation of the driven plate upon rotation of the drive plate.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: January 11, 1994
    Assignee: Sparton Corporation
    Inventors: Charles E. Barnum, Donald R. Rempinski, Donald R. Britt
  • Clutch for tire lift/carrier winch
    Patent number: 5265708
    Abstract: A clutch for a tire lift/carrier winch includes a drive plate and a driven plate having a plurality of elongate springs thereon. The driven plate includes circumferentially spaced driven end portions which are positioned in driving engagement with circumferentially spaced drive portions of the drive plate to permit rotation of the driven plate upon rotation of the drive plate when the load on the cable winding spool is within a prescribed limit. However, when the load on the cable winding spool exceeds the prescribed limit, the elongate springs on the driven plate function as cantilevered spring segments deflectable about respective fulcrums in such a manner as to prevent rotation of the driven plate upon rotation of the drive plate.
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: November 30, 1993
    Assignee: Sparton Corporation
    Inventors: Charles E. Barnum, Donald R. Rempinski, Donald R. Britt
  • Clutch for tire lift/carrier winch
    Patent number: 5027933
    Abstract: A clutch for a tire lift/carrier winch includes a drive plate and a driven plate having a plurality of elongate springs thereon. The driven plate includes circumferentially spaced driven end portions which are positioned in driving engagement with circumferentially spaced drive portions of the drive plate to permit rotation of the driven plate upon rotation of the drive plate when the load on the cable winding spool is within a prescribed limit. However, when the load on the cable winding spool exceeds the prescribed limit, the elongate springs on the driven plate function as cantilevered spring segments deflectable about respective fulcrums in such a manner as to prevent rotation of the driven plate upon rotation of the drive plate.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: July 2, 1991
    Assignee: Sparton Corporation
    Inventors: Charles E. Barnum, Donald R. Rempinski, Donald R. Britt