Patents by Inventor Robert L. Isaia

Robert L. Isaia 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: 5447204
    Abstract: It is desirable in many applications to have a bulldozer assembly that can be angled and/or tilted without having interference between elements of the bulldozer assembly and the machine on which it is mounted. In the subject arrangement, a bulldozer assembly has a blade connected to a U-shaped frame through a universal connector. The blade is angled by a pair of angle cylinders connected between the U-shaped frame and a pair of spaced apart angle cylinder brackets located on the blade. The universal connector is connected to the blade generally midway between the pair of spaced apart angled cylinder brackets and generally aligned therewith. The pitch of the blade is maintained at a preselected position by a pitch control mechanism and mechanically adjusted by the pitch control mechanism.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: September 5, 1995
    Assignee: Caterpillar Inc.
    Inventors: Jerrold R. Asal, David J. Balzer, Darryl J. Brincks, Robert L. Isaia, Kent D. Smith
  • Patent number: 4223878
    Abstract: A vehicle recoil mechanism includes a two-part shaft, a collar being slidable on one part of the shaft and in operative engagement with a recoil spring, the other part of the shaft being associated with a fluid chamber, so that upon wear on the shaft by movement of the collar relative thereto, only the one part of the shaft need be replaced, without interfering with the fluid chamber.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: September 23, 1980
    Assignee: Caterpillar Tractor Co.
    Inventors: Robert L. Isaia, Francis D. Bell, Robert L. Shelby
  • Patent number: 4072332
    Abstract: A latching mechanism is provided for a service panel for gaining access into a closed compartment. The latch is an all seasons latch such that it can be operated even with an arctic mitten on the hand of the operator. The latch handle is positioned in a recess to prevent accidental actuation. A spring is provided for holding the panel or door latched closed and upon movement of the latch handle past a center position will locate the spring for holding the latch inactive as the door or panel is opened.
    Type: Grant
    Filed: July 19, 1976
    Date of Patent: February 7, 1978
    Assignee: Caterpillar Tractor Co.
    Inventor: Robert L. Isaia