Patents by Inventor Lee R. Irwin

Lee R. Irwin 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: 4976449
    Abstract: A portable wheel dolly (10) comprised of a shaft (12), a first support frame (14) and a second support frame (16) held in spaced, parallel relationship in an operating configuration and in end-to-end relationship in a stored configuration. The first and second support frames (14 and 16) have inclined face plates (36) to support one or more tires in an upright position. The shaft (12) slides through slip sleeves (40) at the midpoint of the first and second support frames (14 and 16) and engages nut (48) to hold the dolly (10) in the operating configuration. The shaft (12) slides through sleeves (50) and engages a nut (52) to hold the first and second support frames (14 and 16) in the stored configuration.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: December 11, 1990
    Assignee: Lotspeich-Irwin-Crotty, Inc.
    Inventors: Wayne D. Lotspeich, Lee R. Irwin