Patents by Inventor John T. Atwood

John T. Atwood 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).

  • Twin wheel caster brake
    Patent number: 4333207
    Abstract: A twin wheel caster brake device for casters of the type having two wheels mounted on a common axle, with each wheel having a series of inwardly directed circumferential teeth, or wedge-shaped ribs, disposed at the inner side of each wheel forming a series of slots between the adjacent ribs and each rib having a surface projection forming a constriction in each slot for retaining a braking, or locking pin, which is mounted, or formed on a brake pedal that acts as a lever to force the pin into a slot when it is desired to brake the caster.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: June 8, 1982
    Assignee: Shepherd Products U.S. Inc.
    Inventor: John T. Atwood