Patents by Inventor Frederick D. Carlson

Frederick D. Carlson 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: 4575898
    Abstract: A bushing assembly is disclosed for effecting a pivotal connection of associated first and second members. Notably, the assembly is of an integrally sealed configuration, and includes concentrically arranged first outer and second inner bushings which are sealed by a pair of annular end caps. An arrangement is provided for conveniently lubricating the interface thus formed between the inner and outer bushings, with the sealed nature of the construction significantly reducing the required maintenance. Notably, final assembly of the pivotal connection provided is effected with a suitable adhesive, thus permitting manual or hand-fitting of the various components for final assembly.
    Type: Grant
    Filed: September 19, 1984
    Date of Patent: March 18, 1986
    Assignee: J. I. Case Company
    Inventors: Frederick D. Carlson, Ronald E. Hart