Patents by Inventor George Douglas Higgins

George Douglas Higgins 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).

  • Pneumatic or hydraulic cylinders
    Patent number: 5778753
    Abstract: A pneumatic or hydraulic cylinder assembly (10) includes a cylinder (10), a piston (12) axially slidable within the cylinder (10), and structural elements are disposed within the cylinder (10) to issue a piston (12) position signal in response to the piston reaching a predetermined position.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: July 14, 1998
    Assignee: Parker Hannifin Pty Limited
    Inventor: George Douglas Higgins