Patents by Inventor Dennis Ronald Sandbrook

Dennis Ronald Sandbrook 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: 3949474
    Abstract: A cutting implement, such as a pair of secateurs, either of the anvil type or of the cross over type, in which two handles are pivotable relative to one another, the first of the handles including a removable blade having a pair of substantially parallel fingers which pass within one of the handles on either side of the pivot, and a detent is provided on one of the fingers and said other handle, a leaf spring, which normally urges the handles to an open position, holding the detent in engagement. In the anvil construction, the anvil is formed in one piece with the other handle, by bending two portions of the other handle in opposite directions, so that they both lie in a plane substantially perpendicular to the blade.
    Type: Grant
    Filed: April 4, 1975
    Date of Patent: April 13, 1976
    Assignee: John Cooper and Sons Limited
    Inventors: Dennis Ronald Sandbrook, Harry Melling