Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1997-09-06
2000-07-04
Lee, Kevin
Fluid handling
Systems
Flow path with serial valves and/or closures
13761403, F16L 3728
Patent
active
060824018
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a quick coupling valve assembly, more particularly, to a low spill high flow quick coupling valve assembly.
BACKGROUND OF THE INVENTION
Generally, the invention relates to coupling valve assemblies of the quick connect type.
Various types of quick coupling valve assemblies are known and disclosed in the art, such as a quick connection coupling valve assembly disclosed in the U.S. Pat. No. 5,316,041, issued to Patrick J. Ramacier, Jr. and David W. Meyer. The conventional coupling valve assemblies are generally used in low internal fluid pressure, small diameter fluid lines. The internal fluid pressure is applied to a full cross-section valve members of the coupling valve assembly. For example, the '041 patent discloses a valve assembly which includes a poppet valve member in each of the female and male couplings. The internal fluid pressure is applied to a full cross-section both female and male of the poppet valve members. To engage/disengage the male coupling with/from the female coupling, a large connection force is required to overcome the internal fluid pressure.
In high internal pressure, large diameter fluid lines, it requires an extremely large connection force to overcome the high internal fluid pressure. The present invention solves this problem by minimizing the cross-sectional area of the valve members on which the fluid flow acts. Accordingly, the valve members, of male and female couplings, are substantially pressure balanced so that the acting force is dramatically reduced.
In addition, spring members which are utilized in the conventional coupling assemblies are exposed to fluid passageways. The present invention encloses spring members so that the spring members are not exposed to fluid passageways.
In addition, in the fluid dispensing industry, there are other concerns, such as the cost of the coupling valve assembly. The present invention minimizes the cost by providing a coupling valve assembly made from a minimal number of parts.
There is also a need for coupling valve assemblies which can be reused with a variety of connections. The present invention provides a non-disposable coupling valve assembly which can be utilized with a variety of fluid conduit adaptors.
The present invention provides a coupling valve assembly which solves these and other problems associated with existing coupling valve assemblies.
SUMMARY OF THE INVENTION
The present invention relates to a quick coupling valve assembly, more particularly, to a low spill high flow quick coupling valve assembly.
In one embodiment, a coupling valve assembly generally in accordance with the present invention comprises: retained in the female coupling outer body; female coupling outer body and the female coupling inner body for reciprocal movement along a longitudinal axis of the coupling valve assembly; and outer bodies, the female coupling slide valve being normally biased toward the front end of the outer body by the female coupling spring; therethrough, the female coupling inner body including a fluid port in a circumferential wall of the female coupling inner body proximate the front end of the female coupling inner body, the female coupling slide valve and the female coupling inner body forming a fluid tight seal sealing off the fluid port when the female coupling slide valve is biased to the front end of the female coupling, whereby the female coupling slide valve normally closes the fluid port so that the female coupling is normally closed and prohibits fluid flow therethrough, the female coupling spring being isolated from the female coupling fluid passageway; in the male coupling outer body; portion, being reciprocally received in the male coupling inner body for reciprocal movement along the longitudinal axis of the coupling valve assembly; between the front end portion of the male coupling slide valve and the back end of the male coupling inner body, the male coupling slide valve being normally biased toward the front end of the male coupling outer body by t
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"Qu
Blenkush Brian J.
Braun Thomas Anthony
Colder Products Company
Lee Kevin
LandOfFree
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