Patents by Inventor C. Calvin Hansen

C. Calvin Hansen 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).

  • Publication number: 20010018993
    Abstract: A motorized golf bag cart includes a base frame which extends and retracts telescopically to respectively expand or collapse a battery storage compartment. A drive motor supported in the base frame is linked to a drive axle which selectively drives a pair of drive wheel hubs positioned on respective opposite sides of the base frame. The base frame also includes a pair of transversely extending hollow tube which receive respective first and second telescoping support axles such that they are movable between an extended, operative position and a retracted, compact storage position. An articulating handle is designed to be compactly folded. The inventive golf bag cart is thus quickly and easily changeable between an extremely compact storage and transport configuration and a very stable, four wheeled, operative position.
    Type: Application
    Filed: January 27, 1999
    Publication date: September 6, 2001
    Inventors: LARRY G. ROYER, C. CALVIN HANSEN, JAMES COTTON
  • Patent number: 6283238
    Abstract: A motorized golf bag cart includes a base frame which extends and retracts telescopically to respectively expand or collapse a battery mounting area. A drive motor supported in the base frame is linked to a drive axle which selectively drives a pair of drive wheel hubs positioned on respective opposite sides of the base frame. The base frame also includes a pair of transversely extending hollow tube which receive respective first and second telescoping support axles such that they are movable between an extended, operative position and a retracted, compact storage position. An articulating handle is designed to be compactly folded. The inventive golf bag cart is thus quickly and easily changeable between an extremely compact storage and transport configuration and a very stable, four wheeled, operative position.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: September 4, 2001
    Inventors: Larry G. Royer, C. Calvin Hansen, James Cotton, Clyde J. Fleener
  • Patent number: 5549180
    Abstract: An escape apparatus is designed for placement adjacent to an exterior entrance of a multi-story residence or other building. The escape apparatus includes an escape platform and cage which is attached to and supported by a sleeve which extends around the periphery of a vertically oriented stationary hollow column. The sleeve is movable upward and downward along the column exterior. A pair of cables are connected to the sleeve and extend from the sleeve upward and over a respective pair of sheaves positioned atop the vertical column and then into the column interior where they are connected to a speed control piston-counterweight. The column is preferably filled with liquid, such as a water and anti-freeze mixture, and the piston-counterweight has an aperture extending therethrough from top to bottom to allow liquid to flow from one side of the piston-counterweight to the other and a valve operating within the aperture to further regulate the rate of ascent of the piston-counterweight.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: August 27, 1996
    Assignee: C. Calvin Hansen Trust U/A
    Inventor: C. Calvin Hansen