Patents by Inventor Robert A. Closson

Robert A. Closson 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).

  • Sighting device for use on bows
    Patent number: 6119672
    Abstract: A sight is adjustable in two modes. A lever mounted on a support is pivotable in a vertical plane to vertically adjust an associated sight element carrier plate. The lever is preferably also adjustable independent of the carrier plate to facilitate convenient recalibration or fine tuning of the sight without making other adjustments such as changing the distance indicia on the support. In another embodiment, a lever pointer is adjustable independent of the lever.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: September 19, 2000
    Assignee: Sight Master, Inc.
    Inventor: Robert A. Closson
  • Shock absorbing device for bows
    Patent number: 5517979
    Abstract: A shock absorbing device for a bow which is fixedly mounted on a bow or made integral with a bow and which is provided with a mount for a bow accessory such as a bow sight which mount is moveable by the expansion or compression of a spring in response to the shock generated by the bow to avoid loosening or breakage of the bow accessory by the shock generated by the bow.
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: May 21, 1996
    Inventor: Robert A. Closson
  • Sighting device for use on bows
    Patent number: 4541179
    Abstract: A sighting device for a bow which is fixedly mounted on a bow and which is provided with a lever and link arrangements such that a sight unit thereof is tilted at a progressively increasing rate as the sighting device is adjusted for longer distances so as to compensate for gravity effect on arrows. Also, the sight unit is so mounted whereby it tilts relative to the bow in a manner wherein the sight unit generally lies in a plane which is normal to the sighting axis therethrough for all adjustments of the sighting device.
    Type: Grant
    Filed: April 24, 1984
    Date of Patent: September 17, 1985
    Inventor: Robert A. Closson