Patents by Inventor Robert D. Swenson

Robert D. Swenson 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: 4577360
    Abstract: This invention is directed toward providing a shoe tree that is attractive and relatively lightweight, inexpensive, and easy to use. Shoe tree (4, 4') includes an integral molded plastic body (6, 6') and a flat metal spring (8, 8'). Body (6, 6') has a center portion (14, 14') that defines a downwardly facing channel (30, 30') which receives the main portion (15) of spring (8, 8'). Portion (15) is slidably held in place by retainer elements (32) projecting into channel (30, 30') from sidewalls (26) of center portion (14, 14'). Sidewalls (26) have vertical slots (28) to provide flexibility. Center portion (14, 14') connects toe and heel portions (10, 10', 12, 12') of body (6, 6'). One end (16, 16') of spring (8, 8') has a hole (18, 18') and is heat staked onto a peg (38, 38') projecting from center portion (14') in one embodiment and from toe portion (10) in the other embodiment. The other end (20) of spring (8, 8') slides freely into heel portion (12, 12').
    Type: Grant
    Filed: May 15, 1985
    Date of Patent: March 25, 1986
    Assignee: Melvin D. Pountain
    Inventor: Robert D. Swenson