Valves and valve actuation – With correlated flow path – Pipe coupling or union
Reexamination Certificate
2005-06-17
2008-03-04
Rivell, John (Department: 3753)
Valves and valve actuation
With correlated flow path
Pipe coupling or union
C285S321000
Reexamination Certificate
active
07338030
ABSTRACT:
A supply valve with a valve housing having a fluid inlet and a fluid outlet; a control element which selectively turns the flow of liquid on and off; and a pipe joining assembly. The fluid inlet has a sequentially stepped inner cylindrical surface made up of a first portion having a first diameter at the distal end of the fluid inlet and terminating in a first shoulder, a second portion having a second diameter smaller than the first diameter extending from the first shoulder to a second shoulder, and a third portion having a third diameter smaller than the second diameter extending from the second shoulder to a third shoulder. The pipe joining assembly includes an O-ring seal, a protection ring, a lock ring, a release ring, and a cartridge ring having a predetermined thickness. The release ring, the lock ring, and the protection ring are mounted in the cartridge ring to form a cartridge ring assembly; the cartridge ring assembly is disposed in the first portion which extends axially for a distance substantially equal to the thickness of the cartridge ring when the cartridge ring assembly is mounted in the first portion; the O-ring seal is disposed in the second portion; the cartridge ring assembly and the O-ring seal have an inner diameter substantially equal to the third diameter; and the third diameter is substantially equal to the outer diameter of a pipe to be inserted into the inlet with a press fit.
REFERENCES:
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patent: 6685162 (2004-02-01), Carpenter
The Tectite Push-Fit System, Tectite Data Book—Sep. 2003.
Fristoe Jr. John K.
Rivell John
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