Patents by Inventor Robert M. Kerr

Robert M. Kerr 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: 4254946
    Abstract: A repair fixture for the lower unit of an outboard motor or outdrive which has a U-form body with a bight portion and side arms. One of the arms carries a tubular supporting projection which is telescopically mounted in a fixed sleeve on a work surface. The bight portion is notched centrally to engage the leading edge of a lower unit housing, and the side arms have clamps to releasably engage one of the horizontal cavitation fins of said unit.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: March 10, 1981
    Inventors: Robert M. Kerr, George F. Crabtree
  • Patent number: 3986242
    Abstract: A propeller puller has a central body section with outward fins. Chains are connected to the fins and engage about blades on the propeller, and a push member within the central body section is forced against the mounting shaft of the propeller to extract the propeller from the shaft.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: October 19, 1976
    Inventor: Robert M. Kerr
  • Patent number: 3979111
    Abstract: An outboard motor repair stand has a base with a vertical standard assembly of variable height. At the upper end of the standard a main cross shaft has an offset bar fixed to one end, and a worm gear assembly at the opposite end. A saddle is secured to the offset bar in such manner that a heavy motor or the like attached thereto serves to counterbalance the assembly in co-operation with the mechanical advantage of the worm gear assembly. The handle for the worm gear assembly is located above the housing.The gear shaft has a releasable lock mechanism thereon.
    Type: Grant
    Filed: August 4, 1975
    Date of Patent: September 7, 1976
    Inventor: Robert M. Kerr