One-way valve assembly
AssigneeReSeal International Limited Partnership
InventorGeorge Debush
Life of this patent
Estimating the term…
Abstract
A one-way valve assembly including an axially extending valve body having an inlet end and an outlet end and with an expandable elastomeric sleeve tightly fitted about the valve body. A cover member encloses the elastomeric sleeve and valve body and presses the sleeve into fluid-tight contact with the valve body at two axially spaced locations. Further, the cover member is fitted tightly onto the valve body adjacent its inlet end. A flowable substance flows from a source through the valve body passing to the outlet and cannot flow back to the source.
Claims28
One-way valve assembly for dispensing a flowable substance, comprising a valve body having an inlet arranged to receive the flowable substance from a source and an outlet spaced from the inlet for dispensing the fluid, said valve body has an exterior surface extending in the direction form the inlet toward the outlet, a first passageway in said valve body extends from said inlet through said exterior surface, a second passageway in said valve body extends from the exterior surface through said valve body to said outlet, said first and second passageways are disposed in spaced relation at the exterior surface, a radially expandable sleeve-like elastomeric member is tightly fitted over at least a part of said exterior surface and covers the first and second passageways at said exterior surface, said elastomeric member having a first section closer to said inlet and a second section closer to said outlet with said first and second sections spaced apart in the direction from the inlet to the outlet, a cover member encloses at least part of said elastomeric member and valve body, said cover member is secured to and is in tightly fitted surface contact with said valve body adjacent said inlet and compresses said first and second sections of said elastomeric member in the axial direction toward said inlet into sealing contact with said valve body between said inlet and first passageway extending through said exterior surface and between said outlet and said second passageway extending through said exterior surface, whereby the flowable substance can pass only from the inlet through said first passageway expanding the elastomeric member and permitting the flowable substance to enter the second passageway and exit through the outlet.
One-way valve assembly for dispensing a flowable substance from a source and for preventing backflow of the flowable substance and ambient contaminants into the source, comprising a rigid valve body having an inlet and an outlet spaced from said inlet, said valve body having an exterior surface and an annular flange projecting outwardly from said exterior surface adjacent said inlet, an expandable elastomeric sleeve laterally enclosing and tightly fitted over the exterior surface of said valve body, said elastomeric sleeve having an inside surface and an outside surface and a flange projecting outwardly from said outside surface and bearing against said flange on said valve body, a rigid cover member laterally enclosing said elastomeric sleeve and having an inside surface and an outside surface and a shoulder in the inside surface spaced from said inlet and arranged to compress said flange on said elastomeric sleeve into fluid tight contact with said flange on said valve body, a section of the inside surface of said cover member extending from said shoulder in the direction toward the inlet of said valve body being disposed in tightly fitted contact with a surface of said flange on said valve body for securing said cover member to said valve body, said cover member at a spaced location from said flange on said valve body and adjacent said outlet compresses said elastomeric sleeve into fluid tight sealed contact with said valve body, a first passageway in said valve body extending from said inlet through said valve body to the inside surface of said elastomeric sleeve, a second passageway in said valve body extending from said inside surface of said elastomeric sleeve to said outlet, said inlet passageway and outlet passageway being in spaced-apart relation at the inside surface of said elastomeric sleeve whereby fluid pressed from said inlet into said valve body expands said elastomeric sleeve permitting flow from said inlet passageway to said outlet passageway and then out of said outlet and when said flow is completed said elastomeric sleeve returns into tightly fitting contact forming a sealed closure to said inlet passageway and outlet passageway.
Dependencies are inferred from the claim text.