Patents Assigned to Parr Manufacturing Company
  • Check valve assembly
    Patent number: 4310018
    Abstract: This invention relates to check valve assemblies in general, and more specifically to an easy opening fuel line check valve assembly, wherein a cage structure which supports a free floating ball valve allows a relatively weak spring to be employed for the closing bias while avoiding the buckling problem normally associated with weak spring elements in similar valve assemblies.
    Type: Grant
    Filed: February 13, 1980
    Date of Patent: January 12, 1982
    Assignee: Parr Manufacturing Company
    Inventors: Erwin W. Parr, Timothy B. Brandt