Patents by Inventor Tim A. Jur

Tim A. Jur 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).

  • Method of filling spike holes in railway ties
    Patent number: 4295259
    Abstract: A method of re-using wooden railroad ties in which the old spike holes are filled with a high density rigid polyurethane foam injected into the holes. The foam serves as a plug which prevents or retards deterioration of the tie at the hole site primarily by preventing or mitigating ingress of moisture. Additionally, the foam serves to anchor a new spike if by chance the same hole location is used when re-spiking the tie. The foam has good retention properties even if the spike is driven in before the foam has fully set.
    Type: Grant
    Filed: October 13, 1978
    Date of Patent: October 20, 1981
    Assignee: Canron Corp.
    Inventors: Curtis A. Rhodes, Tim A. Jur, Donald A. Keating