Patents by Inventor Michael Adrian Castleton

Michael Adrian Castleton 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).

  • Method of operating a stamping press
    Patent number: 6205916
    Abstract: A stamping press has a pair of plates defining a press gap between them, a hydraulic ram to produce relative movement between the plates to close the press gap and apply pressure to the die against a substrate in the gap, a hydraulic pump driven by an electric motor through a flywheel means for shutting off the motor on reaching a predetermined pressure in the circuit, and a dump valve for dumping hydraulic pressure from the circuit.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: March 27, 2001
    Assignee: Blackfoil Group Limited
    Inventor: Michael Adrian Castleton