Flexible check valve

• US 2,999,499 A
• Filed: 07/11/1958
• Issued: 09/12/1961
• Est. Priority Date: 07/11/1958
• Status: Expired due to Term

• Current Assignee: Richard H. Willet
• Original Assignee: Richard H. Willet
• Inventors: Willet, Richard H.
• Application Number:
  US03/748,035
• Time in Patent Office: 1,159 Days
• US Class Current: 604/83
• CPC Class Codes: A61M 2039/242 designed to open when a predetermined pressure or flow rate has been reached, e.g. check valve actuated by fluid
• CPC Class Codes: A61M 2039/2473 Valve comprising a non-deformable, movable element, e.g. ball-valve, valve with movable stopper or reciprocating element
• CPC Class Codes: A61M 2039/248 Ball-valve
• CPC Class Codes: A61M 39/24 Check- or non-return valves
• CPC Class Codes: A61M 5/1408 in parallel, e.g. manifolds, sequencing valves access sites A61M39/02; tube connectors A61M39/10
• CPC Class Codes: Y10T 137/7927 Ball valves

Claims