Patents by Inventor Lorin P. Card

Lorin P. Card 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).

  • Fail-safe actuator device
    Patent number: 4480811
    Abstract: The present invention relates to a fail-safe actuator of the type in which a piston riding in a cylinder is urged toward a port end of the cylinder by an energy storage spring. The piston is prevented from moving toward the port end so long as liquid remains entraped between the piston and port end, movement of the piston toward the port end resulting in shifting of a cable and consequent rotation of a quadrant about which the cable is arrayed to rotate a shaft. A rolling seal diaphragm is interposed between the piston and cylinder whereby leakage is prevented over protracted use periods, and the piston is isolated from liquid between the port and piston. Optionally, an annulus disposed between the piston and cylinder bears against the roll seal portion of the diaphragm preventing extrusion or permanent distortion of the diaphragm under high pressure conditions.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: November 6, 1984
    Assignee: VSI Corporation
    Inventors: Lorin P. Card, Otto W. Borsting
  • Fail-safe actuator and hydraulic system incorporating the same
    Patent number: 4412670
    Abstract: The present invention is directed to an improved fail-safe actuator and hydraulic system incorporating the same. The actuator includes energy storage means in the form of a spring adapted to set a control device in a predetermined condition, illustratively in the closed condition, responsive to a failure situation, illustratively, a power failure. The actuator includes a coupling which permits normal operation of the control device without cycling the spring energy storage means, thus increasing the life of the spring and eliminating energy wastage inherent in cocking the spring during each operative cycle.
    Type: Grant
    Filed: July 7, 1981
    Date of Patent: November 1, 1983
    Inventors: Lorin P. Card, Otto W. Borsting
  • Fail-safe actuator and hydraulic system incorporating the same
    Patent number: 4295630
    Abstract: The present invention is directed to an improved fail-safe actuator and hydraulic system incorporating the same. The actuator includes energy storage means in the form of a spring adapted to set a control device in a predetermined condition, illustratively in the closed condition, responsive to a failure situation, illustratively, a power failure. The actuator includes a coupling which permits normal operation of the control device without cycling the spring energy storage means, thus increasing the life of the spring and eliminating energy wastage inherent in cocking the spring during each operative cycle.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: October 20, 1981
    Assignee: Greer Hydraulics, Incorporated
    Inventors: Lorin P. Card, Otto W. Borsting