US3563267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas dispensing double check valve construction
Assignee: Airco Inc
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Filing: 1968-09-30
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Granted: 1971-02-16
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Expires: 1988-09-30
Abstract
Abstract A valve construction comprising an outlet and an adapter, the outlet comprising a primary and secondary housing adapted to be fitted together under a gas keying arrangement, the primary housing including a primary check valve and the secondary housing including a secondary check valve, the secondary check valve being constantly maintained in open position when said primary housing is gas key fitted into the secondary housing, the dimensions of the respective housings being such that plaster finishes of varying thickness are permitted, the primary housing having an adapter keying arrangement so that only a specific adapter can be fitted thereinto, the specific adapter moving the primary check valve to open position to permit gas flow passed the secondary check and primary check through the adapter to the area of its final use, the primary housing and primary check valve therein having at least a pair of seals acting to prevent blowby through the primary housing.
Inventors
- 👤 Charles S Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:54
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/38; F16L37/40; F16K; F16K15/00; F16K15/18; F16L37/60; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6184; Y10T137/6851; Y10T137/6966; Y10T137/6969; Y10T137/698; Y10T137/8593; Y10T137/87917; Y10T137/88046; Y10T137/88062
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
A double valve construction comprising a primary and a secondary housing interrelated with each other, each housing having a check valve and a valve seat, said secondary housing adapted to be connected to gas source means, said primary housing adapted to receive valve operating means to move the primary housing check valve between an open and closed position, said secondary housing check valve being held constantly in valve open position by the interrelation between said primary and secondary housings, and said secondary housing check valve being biased to valve closed position when said primary housing is removed from interrelation with the secondary housing.
Claim 2
Dependent Claim
103 words
A double valve construction comprising a primary and a secondary housing interrelated with each other, each housing having a check valve and a valve seat, said secondary housing adapted to be connected to gas source means, said primary housing adapted to receive valve operating means to move the primary housing check valve between an open and closed position, said secondary housing check valve being held constantly in valve open position by the interrelation between said primary and secondary housings, and said secondary housing check valve being biased to valve closed position when said primary housing is removed from interrelation with the secondary housing.
Claim 3
Dependent Claim
33 words
The construction as set forth in claim 1 wherein each primary and secondary housing has a keying arrangement so that only a specifically designated primary housing may be interrelated with any secondary housing.
Claim 4
Dependent Claim
55 words
The construction set forth in claim 1 wherein said primary housing has projection means extending toward said secondary housing and said secondary housing check valve has recess means receiving said projection means on interrelation of said primary housing and said secondary housing to move and maintain the secondary housing check valve constantly in open position.
Claim 5
Dependent Claim
82 words
The construction set forth in claim 3 wherein said secondary housing is embedded in a wall adapted to have a plaster finish, the movement of the secondary housing check valve to valve open position on reception of the projection means in said recess means is variable, and said primary housing can be interrelated with said secondary housing to accommodate various plaster finish thickness and still maintain the secondary housing check valve in valve open position in accordance with the variable movement thereof.
Claim 6
Dependent Claim
155 words
A valve construction for governing fluid flow comprising a housing having an opening therethrough with a reciprocative valve movement element therein adapted to move between valve open and closed positions, stop means in said opening against which said element abuts in valve closed position; said element being biased to closed position and having first sealing means moveable therewith relative to the housing in sealing contact between the exterior of said element and the periphery of said opening, said housing having second sealing means on the periphery of said opening fixed with respect thereto in sealing contact between the periphery of the opening and the exterior of Said element, and valve opening means insertable in said opening and adapted to move said valve element to valve open position, first breaking the sealing contact of said second sealing means and subsequently breaking the sealing contact of said first sealing means to permit fluid flow through the construction.
Claim 7
Dependent Claim
155 words
A valve construction for governing fluid flow comprising a housing having an opening therethrough with a reciprocative valve movement element therein adapted to move between valve open and closed positions, stop means in said opening against which said element abuts in valve closed position; said element being biased to closed position and having first sealing means moveable therewith relative to the housing in sealing contact between the exterior of said element and the periphery of said opening, said housing having second sealing means on the periphery of said opening fixed with respect thereto in sealing contact between the periphery of the opening and the exterior of Said element, and valve opening means insertable in said opening and adapted to move said valve element to valve open position, first breaking the sealing contact of said second sealing means and subsequently breaking the sealing contact of said first sealing means to permit fluid flow through the construction.
Claim 8
Dependent Claim
63 words
The construction set forth in claim 5 wherein the housing and the valve opening means have a keying arrangement, the sealing contact of the second sealing means with respect to the valve element is breakable under any insertion of the opening means in the opening, said the sealing contact of the first sealing means is breakable only if the keying arrangement is effected.
Claim 9
Dependent Claim
97 words
A double check valve construction comprising a primary and a secondary housing interrelated with each other, each housing having a check valve and a valve seat, said secondary housing adapted to be connected to gas source means, operating means adapted to move the primary housing check valve between open and closed positions, said secondary housing check valve being held constantly in valve open position by the interrelation between said primary and secondary housings, and said secondary housing check valve being biased to valve closed position when said primary housing is removed from interrelation with the secondary housing.
Claim 10
Dependent Claim
97 words
A double check valve construction comprising a primary and a secondary housing interrelated with each other, each housing having a check valve and a valve seat, said secondary housing adapted to be connected to gas source means, operating means adapted to move the primary housing check valve between open and closed positions, said secondary housing check valve being held constantly in valve open position by the interrelation between said primary and secondary housings, and said secondary housing check valve being biased to valve closed position when said primary housing is removed from interrelation with the secondary housing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |