Patents Assigned to Proteus Developments Limited
  • Selector valve
    Patent number: 5901748
    Abstract: A selector valve includes an annular body having a sealing surface having a plurality of inlet ports. The sealing head carries a seal member which is urged by a spring against the sealing surface. The sealing member has a sealing face comprising a central band and lateral areas above and below the central band. The lateral areas are reduced in size compared to the area of the central band to equalize wear of the sealing member.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: May 11, 1999
    Assignee: Proteus Developments Limited
    Inventor: Adrian Jessop