Pump valve with controlled stroke
AssigneeHargraves Technology Corporation
InventorsDonald Hargraves, Douglas Curtis
Life of this patent
Estimating the term…
Abstract
A valve assembly for a pump includes a pump chamber and a pump head having complementary recesses formed therein which cooperate to define a valve compartment including a pocket and an opposed seat. A flexible valve element is disposed between the recesses and adapted to move between a closed position against the seat which prevents fluid flow and an open position away from the valve seat which permits fluid flow. The dimensions of the valve compartment are selected to limit the movement of the valve element in the open position, which increases the pump efficiency and prevents damage to the valve element and/or valve overlap.
Claims18
A valve assembly for a pump, comprising;
- a pump chamber having a first recess formed therein;
- a pump head having a second recess formed therein, said second recess cooperating with said first recess to define a first valve compartment including a first valve pocket and an opposed first valve seat;
- and
- a flexible first valve element disposed between said first and second recesses and adapted to move between a closed position against said first valve seat which prevents fluid flow and an open position away from said first valve seat which permits fluid flow in a first direction;
- wherein the dimensions of said first valve compartment are selected to limit the movement of said first valve element in the open position.
A pump assembly, comprising:
- a pump chamber having a first recess formed therein;
- a pump head having housing having a second recess formed therein, said second recess cooperating with said first recess to define a first valve compartment including a first valve pocket and an opposed first valve seat;
- and
- a flexible first valve element having a selected first thickness disposed between said first and second recesses and adapted to move through a stroke length between a closed position against said first valve seat which prevents fluid flow and an open position away from said first valve seat which permits fluid flow;
- wherein the dimensions of said first valve compartment are selected to limit the stroke length of said first valve element to less than about 1.6 times said first thickness.
Dependencies are inferred from the claim text.