Patents by Inventor James R. Crookston

James R. Crookston 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: 4809436
    Abstract: A roofer's tool for stripping shingles from the roof of a building; the tool including a blade attached to a straight handle by a mounting bracket whereas the mounting bracket includes a section attached to the end of the handle and a fulcrum portion extending backwardly from the handle while a flat attaching section protrudes forwardly from the lower end of the handle and where the blade has a row of operative teeth along a front edge thereof whereby the tool can be manually forced under a layer of shingles and an effective prying action upwardly on the shingles from their lower surfaces can be provided by pivoting the tool around a fulcrum section of the mounting bracket. Also the blade is removably attached to a portion of the mounting bracket by mounting members which are readily accessible and are protected against damage in use of the tool.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: March 7, 1989
    Inventor: James R. Crookston