Patents by Inventor Robert B. Macintosh

Robert B. Macintosh 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: 4070933
    Abstract: A pipe wrench jaw adapted to be utilized with a wrench having a pair of jaw members adapted to be moved towards and away from each other. The replaceable jaw comprises a housing member having an upper and lower end spaced from each other and a pair of sides adapted to fit across the width of a jaw member of the wrench with a plurality of grooves extending on the upper end between the sides. Each groove has a front and rear wall extending in spaced relationship to each other and a gripping member is pivotably mounted in each groove between the sides and adapted for angular movement between a forward position and a rearward position between the front and rear wall respectively.
    Type: Grant
    Filed: March 17, 1977
    Date of Patent: January 31, 1978
    Inventor: Robert B. Macintosh