Patents Assigned to Roche Engineering Corporation
  • Patent number: 5319932
    Abstract: A power sensing regenerator includes a pair of displacers (24 and 26) connected in tandem for dividing a flow of fluid from a pump (12) into predetermined proportions for servicing one or more loads (42). Flow control valves (32 and 34) regulate respective flows from the displacers (24 and 26) to the one or more loads (42). A control system, which includes differential pressure regulators of the flow control valves (32 and 34), responds to a difference between discharge pressures of the displacers (24 and 26) for reducing discharge pressure of the pump (12).
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: June 14, 1994
    Assignee: Roche Engineering Corporation
    Inventor: Richard M. Roche
  • Patent number: 5293745
    Abstract: A regenerator for a fluid power system is arranged to control flow rates while converting pressure drops accompanying resulting changes in flow rates into useful work. A gang of displacers are incorporated into a fluid flow network that also includes an array of selectable flow paths through the displacers. A control system, responsive to changes in demand for the flow of fluid, selects among the flow paths to operate the displacers in various combinations as motors, pumps, and recirculators for dividing the flow of fluid into two variably sized portions. One portion of the flow is sized to match the demand for fluid flow, and the other portion of the flow is converted into useful work.
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: March 15, 1994
    Assignee: Roche Engineering Corporation
    Inventor: Richard M. Roche
  • Patent number: 5251442
    Abstract: A regenerator for a fluid power system is arranged to control flow rates while converting pressure drops accompanying resulting changes in flow rates into useful work. A gang of displacers are incorporated into a fluid flow network that also includes an array of selectable flow paths through the displacers. A control system, responsive to changes in demand for the flow of fluid, selects among the flow paths to operate the displacers in various combinations as motors, pumps, and recirculators for dividing the flow of fluid into two variably sized portions. One portion of the flow is sized to match the demand for fluid flow, and the other portion of the flow is converted into useful work.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: October 12, 1993
    Assignee: Roche Engineering Corporation
    Inventor: Richard M. Roche