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US 2006/0049208 A1Published application
Slit valves and dispensing nozzles employing same
OwnerWarren Daanseninventor
Life of this patent
Estimating the term…
Abstract
An improved outlet valve assembly for a pump-type fluid dispenser includes a nozzle and a self-sealing slit valve having a valve head portion bounded by a peripheral sealing portion retained between the pump outlet and the nozzle. In further aspects, improved valve members, fluid dispensers, and a method for making a fluid dispenser are provided.
Claims22
An outlet valve assembly for a fluid dispenser, the fluid dispenser being of a type having a pump which has a pump inlet coupled to a fluid reservoir and a pump outlet, said outlet valve assembly comprising:
- an annular sleeve having a radially inwardly extending annular internal stop member;
- a hollow conduit member having an end edge surface defining an opening coaxially received within said annular sleeve;
- and
- a resiliently deformable valve member disposed within said annular sleeve, said valve member including a valve head portion having one or more slits defining an orifice and a peripheral sealing ring bounding said valve head portion, said peripheral sealing ring sealingly retained between said annular internal stop and said edge surface.
1 more element
A valve member for a fluid dispenser, comprising:
- a valve head portion having one or more slits defining an orifice;
- a peripheral sealing ring bounding said valve head portion;
- a first annular groove formed on a first surface of said sealing ring wherein a clamping applied to said annular groove and a second surface of the sealing ring opposite said first side does not cause distortion of the valve head member.
A valve member for a fluid dispenser, comprising:
- a valve head portion having a first, generally convex surface;
- a second, generally concave surface opposite said first surface;
- and one or more slits defining an orifice;
- a peripheral sealing ring bounding said valve head portion;
- and
- an annular groove formed on said second surface adjacent to the peripheral sealing ring to define a region of reduced valve head thickness adjacent to the peripheral sealing ring.
3 more elements
A valve member for a fluid dispenser, comprising:
- a valve head portion having a first, generally convex surface;
- a second, generally concave surface opposite said first surface;
- and one or more slits defining an orifice;
- a peripheral sealing ring bounding said valve head portion;
- and
- a plurality of concentric annular grooves formed on one or both of said first and second surfaces.
3 more elements
A valve member for a fluid dispenser, comprising:
- a valve head portion having a first, generally convex surface;
- a second, generally concave surface opposite said first surface;
- and one or more slits defining an orifice;
- a peripheral sealing ring bounding said valve head portion;
- and
- a generally cone-shaped cavity formed on one or both surfaces at said orifice.
3 more elements
A fluid dispenser comprising:
- a pump having a pump inlet and a pump outlet;
- a fluid reservoir coupled to the pump inlet;
- and
- an outlet valve assembly coupled to the pump outlet, said outlet valve assembly including:
- a hollow dispensing nozzle including an annular sleeve portion adapted to coaxially receive the pump outlet and an annular internal stop extending inwardly into an opening defined by said annular sleeve;
- and
- a resiliently deformable valve member disposed within said dispensing nozzle, said valve member including a valve head portion having one or more slits defining an orifice and a peripheral sealing ring bounding said valve head portion, said peripheral sealing ring adapted to be sealingly retained between said annular internal stop and the pump outlet.
4 more elements
A method of making a fluid dispenser, comprising:
- providing a fluid source including a pump having a pump inlet coupled to a fluid reservoir and a pump outlet;
- and
- securing a valve assembly to said pump outlet, said valve assembly including a resiliently deformable valve member having a valve head portion with one or more slits defining an orifice and a peripheral sealing ring bounding said valve head portion, said outlet valve assembly selected from one of:
- a hollow dispensing nozzle including an annular sleeve portion adapted to coaxially receive the pump outlet and an annular internal stop extending inwardly into an opening defined by said annular sleeve, said peripheral sealing ring adapted to be sealingly retained between said annular internal stop and the pump outlet;
- and
- a hollow dispensing nozzle having an end edge surface defining an opening adapted to be coaxially received within the pump outlet, said pump outlet having an annular internal stop extending inwardly into a channel defined by the pump outlet, said peripheral sealing ring adapted to be sealingly retained between said annular internal stop and said edge surface.
3 more elements
Dependencies are inferred from the claim text.