Patents Assigned to Alpha Press Company
  • Stroke limiting mechanism with fail-safe feature
    Patent number: 4038907
    Abstract: A stroke limiting mechanism is connected with the movable member of a hydraulically operated machine to precisely position the movable member. The flow circuit for the stroke limiting mechanism is connected in such a manner that even if an equipment failure occurs, the movable member will be retained in a pressure-balanced condition, thus creating a fail-safe situation.
    Type: Grant
    Filed: January 21, 1976
    Date of Patent: August 2, 1977
    Assignee: Alpha Press Company
    Inventor: Adolf F. Weiss