US3757836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-connect valve for use in filling gas cylinders
Assignee: Daido Kogyo Co Ltd
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Filing: 1971-11-01
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Granted: 1973-09-11
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Expires: 1991-11-01
Abstract
Abstract The valve comprises a tubular stem adapted to engage the central portion of a threaded socket inlet in a gas cylinder. A longitudinally sectioned sleeve surrounds the stem and has a threaded end that fits the threaded socket when expanded. A sleeve support slidably surrounds the stem and has a ferrule on which the sections of the sleeve are pivoted, and a resilient annular member surrounds the sectioned sleeve adjacent to the threaded end thereof, for pivoting the sections of the sleeve on the ferrule to contract the threaded end of the sleeve around the stem. A collar is axially slidable on the sleeve support and has a flared end for engaging the sections of the sleeve to pivot them in opposition to the resilient annular member in order to expand the threaded end of the sleeve into engagement with the threads of the socket.
Inventors
- 👤 E Masuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:58
CPC Classifications
F; F17; F17C; F17C5/00; F16; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/121; F16L37/1215; F16L37/28; F16L37/38; F16L37/46; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/037; F17C2205/0382
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
156 words
A quick-connect valve for use in filling gas cylinders, comprising a tubular stem adapted to engage the central portion of a threaded socket inlet in a gas cylinder, a longitudinally sectioned sleeve which surrounds the stem and has a threaded end that fits such threaded socket when expanded, a sleeve support which slidably surrounds the stem and has a ferrule on which the sections of the sleeve are pivoted, a resilient annular member which surrounds the sectioned sleeve adjacent to the threaded end thereof, for pivoting the sections of the sleeve on the ferrule to contract the threaded end of the sleeve around the stem, and a collar which is axially slidable on the sleeve support and has a flared end for engaging the sections of the sleeve to pivot them in opposition to the resilient annular member in order to expand the threaded end of the sleeve into engagement with the threads of the socket.
Claim 2
Dependent Claim
156 words
A quick-connect valve for use in filling gas cylinders, comprising a tubular stem adapted to engage the central portion of a threaded socket inlet in a gas cylinder, a longitudinally sectioned sleeve which surrounds the stem and has a threaded end that fits such threaded socket when expanded, a sleeve support which slidably surrounds the stem and has a ferrule on which the sections of the sleeve are pivoted, a resilient annular member which surrounds the sectioned sleeve adjacent to the threaded end thereof, for pivoting the sections of the sleeve on the ferrule to contract the threaded end of the sleeve around the stem, and a collar which is axially slidable on the sleeve support and has a flared end for engaging the sections of the sleeve to pivot them in opposition to the resilient annular member in order to expand the threaded end of the sleeve into engagement with the threads of the socket.
Claim 3
Dependent Claim
69 words
A quick-connect valve according to claim 1 comprising valve mechanism which is operated by axial movement of the collar and has an inlet for connection to a supply of gas under pressure, in order to supply gas to the tubular stem when the collar is moved into engagement with the sections of the sleeve to expand the end of the sleeve into engagement with the threads of the socket.
Claim 4
Dependent Claim
44 words
A quick-connect valve according to claim 2 wherein the tubular stem is mounted on a piston in the sleeve support which is operated by pressure of the supplied gas to force the stem into sealing engagement with the central portion of the threaded socket.
Claim 5
Dependent Claim
39 words
A quick-connect valve according to claim 3 wherein the valve mechanism is a three-way valve mechanism which connects the tubular stem to a relief port when the collar is moved out of engagement with the sections of the sleeve.
References Cited (Backward Citations)
US2070013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |