Patents by Inventor Bruce H. Bertram

Bruce H. Bertram 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: 5673574
    Abstract: An immobilizing clamp for engaging the wheel of a vehicle comprises a pair of flat plates coupled together by a pivot pin so that the surfaces of the plates slide one on the other. The plates define a base portion which is generally rectangular and a single arm extending from the base portion. The base portion has a pivot pin and a lock with the lock and pivot pin lying generally on a line symmetrical of the two clamping members and passing through end points at the ends of the arms. The height and width of the base portion is so that there is significant overlap which provides sufficient strength to prevent leverage against the clamping members from forcing the end points of the arms apart either in the common plane or at right angles to the common plane.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: October 7, 1997
    Inventor: Bruce H. Bertram
  • Patent number: 5450659
    Abstract: A safety clamp for mounting on wires of an animal trap to hold the trap against inadvertent actuation comprises a pair of flat plates arranged in spaced parallel position and squeezable together against resistance from a coil spring positioned there between. Each plate carries a hook member with a straight portion having one end welded to the respective squeeze plate and extending therefrom at a right angle through a hole in the other squeeze plates to a hook portion beyond the other squeeze plate. The hook members are parallel and closely spaced so that the coil spring is wrapped around the two hook members in their position between the squeeze plates. Two further hook portions are mounted on one side of the squeeze plates and extend inwardly between the squeeze plates. The hook portions are engaged over wires of the trap and are held in place by the spring action pulling the hook portions together.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: September 19, 1995
    Inventor: Bruce H. Bertram
  • Patent number: 4757639
    Abstract: Animal traps are usually difficult to sterilize in order to remove human odor therefrom and difficult to hide when setting and often contain moving parts, tubes, pins and the like. The present device consists of a pair of spring arms made of heavy wire with a hairpin spring at the junction thereof. Eye loops are formed one on each distal end of the arms and one of these has a slotted semi-circular plate welded otherwise secured into the base of the eye. A freely running snare loop is provided on one end of a standing part, in which part extends through the slot in the disk or plate and through a cotter pin assembly spanning the other eye and terminates with a ferrule outboard of the other eye. A trigger block is secured to the standing part inboard of the slotted disk when the trap is set with the two arms close together and being urged apart by the spring.
    Type: Grant
    Filed: February 26, 1987
    Date of Patent: July 19, 1988
    Inventor: Bruce H. Bertram