Four-way valve

• US 3,411,534 A
• Filed: 12/28/1966
• Issued: 11/19/1968
• Est. Priority Date: 12/28/1966
• Status: Expired due to Term

• Current Assignee: Bankers Trust Company (Deutsche Bank)
• Original Assignee: Frank L. Rose
• Inventors: Rose, Frank L.
• Application Number:
  US04/605,350
• Time in Patent Office: 692 Days
• US Class Current: 137/595
• CPC Class Codes: A61M 39/28 Clamping means for squeezing flexible tubes, e.g. roller clamps tube strippers A61M1/83
• CPC Class Codes: F16K 11/027 the fluid flowing through a constrictable tubular diaphragm
• CPC Class Codes: F16K 7/06 by means of a screw-spindle, cam, or other mechanical means F16K7/045 takes precedence
• CPC Class Codes: Y10T 137/87161 With common valve operator

Claims