Patents Assigned to Blackfoil Group Limited
  • 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