With Control Of Distributor Motor Supply Or Exhaust Port By Distributor Working Member Patents (Class 91/301)
  • Unbalanced spool
    Patent number: 4397614
    Abstract: This invention concerns a fluid operated valve with a slidable valve member having formations enabling differential operating forces to be applied thereto and preferably having means to relieve pressure from the leading formation during travel of the member to promote `snap` action and preferably being associated with a pneumatic piston and cylinder motor driving an hydraulic pump in an integrated unit constituting a pneumatic/hydraulic convertor.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: August 9, 1983
    Assignee: Fluid Devices Limited
    Inventor: Donald A. Larner