Patents Examined by Marton P. Schwadron
  • Operating mechanism for turning an axle end
    Patent number: 3977305
    Abstract: An operating mechanism for turning a butterfly valve axle or similar device has a piston/cylinder unit of which the piston is coupled to the axle and is provided with screw-thread means producing rotation of the axle as the piston is reciprocated in the cylinder. The arrangement of the piston/cylinder unit and coupling means is such that a longitudinally compact mechanism is achieved.
    Type: Grant
    Filed: November 21, 1973
    Date of Patent: August 31, 1976
    Assignee: C.O. Hansen MASKINFABRIK af 1970 A/S
    Inventor: Jorgen Sondergaard