Pump valve

• US 4,181,477 A
• Filed: 03/02/1978
• Issued: 01/01/1980
• Est. Priority Date: 03/02/1978
• Status: Expired due to Term

• Current Assignee: Pace, Inc.
• Original Assignee: Pace, Inc.
• Inventors: Litt, Kenneth C.
• Primary Examiner(s): Croyle, Carlton R.
• Assistant Examiner(s): Look, Edward
• Application Number:
  US05/882,799
• Time in Patent Office: 670 Days
• Field of Search: 417/560, 417/566, 417/380, 417/395, 137/512.15, 137/512.4, 137/859
• US Class Current: 417/560
• CPC Class Codes: F04B 53/1092 and one single element forming both the inlet and outlet closure member
• CPC Class Codes: F16K 15/1402 having an integral flexible member cooperating with a plurality of seating surfaces
• CPC Class Codes: Y10T 137/784 Integral resilient member forms plural valves
• CPC Class Codes: Y10T 137/7843 Integral resilient member forms plural valves

Abstract

The inlet and discharge valves of a pump are each comprised of a circular valve plate centered in a circular cutout in a flat valve sheet. Diametrically opposed webs join the valve plate to the main body of the valve sheet and perforations in the webs provide both, spring action and allow for air passage.

Claims

1. A pump including:

a variable internal volume chamber for temporary storge of a flow media therein;

a first valve connected to said chamber for one-way flow of said media, therethrough, said valve comprising an elastomer valve sheet having a valve plate therein centered in arcuate cutouts through the valve sheet with cutout gaps spacing apart the valve plate from the balance of the valve sheet and with opposed flexible webs formed between cutouts connecting valve plate to valve sheet;

an annular valve seat with a flow passage centrally thereof pressing against one surface of said valve plate and a circular recess with a flow passage from said chamber connected thereto facing the other surface of said valve plate, the flow passages being joined by way of the cutouts when the valve plate lifts from the annular valve seat;

a groove surrounding the annular valve seat greater in diameter than the diameter of the circular recess; and

housing wall means surrounding the groove and housing wall means surrounding the recess, said elastomer valve sheet being compressed therebetween whereby the valve plate is biased against the annular valve seat.

a second like one-way valve connected to said chamber oriented for opposite direction flow relative to said chamber and said first valve;

means to alternately increase and decrease the internal volume of said chamber;

whereby expanding the volume of said chamber lifts one valve plate from its valve seat by flexure of said web, and contracting the volumne of said chamber lifts the other valve plate from its valve seat.

2. A valve comprising:

an elastomer valve sheet having a valve plate therein centered in arcuate cutouts through the valve sheet with cutout gaps spacing apart the valve plate from the balance of the valve sheet and with opposed flexible webs formed between cutouts connecting the valve plate to the valve sheet;

an annular valve seat with a flow passage centrally thereof against one surface of said valve plate, the flow passages being joined by way of the cutouts when the valve plate lifts from the annular valve seat;

a groove surrounding the annular valve seat greater in diameter than the diameter of the circular recess; and

housing wall means surrounding the groove and housing wall means surrounding the recess, said elastomer valve sheet being compressed therebetween, whereby the valve plate is biased against the annular valve seat.