Patents by Inventor Robert J. Simonsen

Robert J. Simonsen 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: 5568671
    Abstract: An all-plastic, swivel caster assembly has horn and stem molded as a homogeneous unit of plastic. A wheel of molded plastic or plastic-rubber combination, supports the assembly. In one version, the horn sidewalls have fingers forming keyhole-shaped slots receiving grooved end portions of a plastic axle borne by the wheel. The axle retaining fingers normally secure the axle in the horn, but are sufficiently resilient to enable intentional removal of the wheel and axle assembly from the horn without tools, for cleaning. In another version, the horn sidewalls have apertures receiving a plastic axle which has a head on one end and a circumferential groove at the other end. An axle cap located at the outside face of one horn sidewall has a slot received on the axle groove, and retains the axle in assembly. The cap has a detent boss received in a detent recess in the horn sidewall to keep the cap, and thereby the axle, in place.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: October 29, 1996
    Assignee: FKI, Industries, Inc.
    Inventors: Charles A. Harris, Robert J. Simonsen
  • Patent number: 5400469
    Abstract: The legs of a swivel caster assembly horn are mounted to a pair of horizontally-spaced beam plates which are pivoted to the legs ahead of the swivel axis. The caster wheel is mounted on an axle behind the swivel axis. A pair of urethane springs is mounted to the horn legs ahead of the pivot axis. A bolt across the front ends of the beams receives collars, each collar having a threaded transverse aperture which is screwed onto threads on the lower ends of bolts whose upper ends have heads with flanges which bear downward on a spring cap plate bearing downward on the tops of the springs, whereby the load on the caster horn is applied by lever action to the springs which are pre-loaded by the collars screwed onto the bolts.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: March 28, 1995
    Assignee: FKI Industries, Inc.
    Inventor: Robert J. Simonsen
  • Patent number: D274788
    Type: Grant
    Filed: August 16, 1982
    Date of Patent: July 24, 1984
    Assignee: Axia Incorporated
    Inventor: Robert J. Simonsen
  • Patent number: D347162
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: May 24, 1994
    Assignee: Babcock Industries Inc.
    Inventor: Robert J. Simonsen