Low flow pressure check valve
AssigneePSG Germany GmbH
InventorPaul Hayes-Pankhurst
Life of this patent
Estimating the term…
Abstract
Methods and systems include a check valve including a valve body formed from a resilient material, the valve body having an inlet side and an outlet side. The valve body includes a rim forming an outer periphery of the valve body, and a hinge section comprising an annular groove formed on the inlet side of the valve body radially inward of and adjacent to the rim. The valve body also includes a plurality of lips formed at a center of the valve body by one or more slits extending radially outward from the center of the valve body towards the hinge. The hinge section is co-planar with the plurality of lips when in a closed position.
Claims27
A check valve comprising:
- a valve body formed from a resilient material, the valve body having an inlet side and an outlet side and comprising:
- a rim forming an outer periphery of the valve body;
- a hinge section comprising an annular groove formed on the inlet side of the valve body radially inward of and adjacent to the rim;
- and
- a plurality of lips formed at a center of the valve body by one or more slits extending radially outward from the center of the valve body towards the hinge, and
- wherein the hinge section is co-planar with the plurality of lips when in a closed position.
A dispensing system comprising:
- a reservoir;
- a pump comprising an inlet and an outlet, the inlet fluidly coupled to the reservoir;
- a valve fluidly coupled to the outlet of the pump, the valve comprising:
- a valve body formed from a resilient material, the valve body having an inlet side and an outlet side and comprising:
- a rim forming an outer periphery of the valve body;
- a hinge section comprising an annular groove formed on the inlet side of the valve body radially inward of and adjacent to the rim;
- and
- a plurality of lips formed at a center of the valve body by one or more slits extending radially outward from the center of the valve body towards the hinge, and
- wherein a surface extending at least from the center to and including the hinge is planar on the outlet side of the valve body.
A method for dispensing a fluid comprising:
- opening a valve by providing a fluid pressure to an inlet side of the valve, the fluid pressure being larger than a check pressure of the valve;
- dispensing the fluid through the valve;
- and
- closing the valve by providing a negative pressure to the inlet side of the valve.
A valve comprising:
- a valve body formed from a resilient material, the valve body comprising
- an inlet side;
- an outlet side comprising a planar surface;
- a rim having a first thickness and forming an outer periphery of the valve body;
- a hinge section having a second thickness and positioned inward of and adjacent to the rim, the hinge section defining a pivot point disposed closer to the outlet side than to the inlet side;
- and
- a plurality of lips having a third thickness larger than the second thickness, the plurality of lips formed at a center of the valve body by one or more slits extending radially outward from the center of the valve body towards the hinge section.
Dependencies are inferred from the claim text.