Fluid handling – With repair – tapping – assembly – or disassembly means – Removable valve with normally disabled supplemental check valve
Reexamination Certificate
1997-10-09
2001-05-15
Walton, George L. (Department: 3753)
Fluid handling
With repair, tapping, assembly, or disassembly means
Removable valve with normally disabled supplemental check valve
C137S614190, C137S614200, C137S068190
Reexamination Certificate
active
06230737
ABSTRACT:
TECHNICAL FIELD
The present invention relates generally to cylinders for storing, transporting and dispensing fluids such as compressed gases, and more particularly, to valve assemblies for such cylinders.
BACKGROUND ART
High pressure cylinders are used widely to transport and dispense large quantities of various industrial gases. Such cylinders can be used individually or manifolded to supply the user's gas requirements.
Presently, high pressure cylinders are fitted with multi-purpose valve systems. The valve systems are suitable to charge the cylinder with gas. The valve systems are also suitable to dispense gas from the cylinder. In addition, the valve systems are suitable to act as a shut-off device to stop the dispensing of gas. And, moreover, the valve systems also serve a safety function to prevent excessive pressure rise through a pressure-sensitive cap or the like.
While every charged fluid cylinder requires attachment of a valve system at all times (at least to provide a safety and shut-off mechanism), it is not necessary that every gas cylinder have a multi-function valve system at all times. The additional features (such as pressure-reducing stage, residual product check devices or even dispensing or charging elements) create an added expense, which is not necessary during transport, handling and storing of gas cylinders.
Besides cost considerations, such conventional multi-function valve systems protrude above the gas cylinder and are therefore susceptible to deformation and/or breakage, particularly during cylinder mishandling (e.g., tip over). The result of such deformation and/or breakage may be waste of gas product, or worse yet the escape of unsafe gas product into the environment.
It is therefore an object of the invention to provide a cylinder valve assembly which will enable a cylinder to be transported from a charging station to a dispensing station without a dispensing valve.
SUMMARY OF THE INVENTION
The above and other objects, which will become apparent to one skilled in the art upon a reading of this disclosure, are attained by the present invention, which is:
A cylinder valve assembly comprising:
(A) a cylinder;
(B) a sealing assembly attached to the cylinder, said sealing assembly having a threaded receiver communicating with an engaging passage, and a check valve having a check valve stem extending into said engaging passage; and
(C) a detachable dispensing valve threaded within the receiver having a dispensing valve stem extending into said engaging passage and sized to contact the check valve stem within the engaging passage when the detachable dispensing valve is seated in the receiver.
As used herein the term “check valve” means a valve biased in the closed position.
As used herein the term “dispensing valve” means an unbiased valve which can be opened or closed.
As used herein the term “seated” means screwed to a tight fit.
REFERENCES:
patent: 880786 (1908-03-01), Finnegan
patent: 1226175 (1917-05-01), Bibleheiser, Jr.
patent: 1441987 (1923-01-01), Lee
patent: 1645156 (1927-10-01), Rowe
patent: 2461940 (1949-02-01), Sundstrom
patent: 3930517 (1976-01-01), Gagala
patent: 4033378 (1977-07-01), Pauliukonis
patent: 4123089 (1978-10-01), Viero et al.
patent: 4527587 (1985-07-01), Fairlamb
patent: 4562852 (1986-01-01), Britt
patent: 4562856 (1986-01-01), Garvey et al.
patent: 4606367 (1986-08-01), Britt
patent: 4844111 (1989-07-01), Pritchard et al.
patent: 4850387 (1989-07-01), Bassill
patent: 4905723 (1990-03-01), Pritchard et al.
patent: 4909269 (1990-03-01), Pritchard et al.
patent: 5022423 (1991-06-01), Britt
patent: 5036878 (1991-08-01), Fournillon et al.
patent: 5048565 (1991-09-01), Oi
patent: 5127436 (1992-07-01), Campion et al.
patent: 5465754 (1995-11-01), Sudo et al.
patent: 5787921 (1998-08-01), Kryger
DeBriae Thomas Edward
Notaro John
Ktorides Stanley
Praxair Technology Inc.
Walton George L.
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