US3577696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of filling a pressure vessel assembly
Assignee: Colt Industries Operating Corp
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Filing: 1969-04-29
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Granted: 1971-05-04
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Expires: 1989-04-29
Abstract
Abstract A metal high-pressure gas storage vessel has a threaded neck adapted to engage a threaded cap such that both cap and neck sealingly bear against an interposed seal element. The seal and cap are loosely assembled with the empty bottle and placed in a fluidtight filling fixture whereupon highly pressurized gas is introduced to the fixture, causing the bottle to fill by leakage between the loosely engaged threads. Then the cap is tightened and the fixture is vented prior to removal of the filled bottle. To lock the cap against rotation, the cap is locally upset into grooves in the neck after the acceptability of the charge has been verified.
Inventors
- 👤 Herbert G Bock
- 👤 Walter J Szerejko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:39
CPC Classifications
F; F17; F17C; F17C5/00; F17C5/06; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2227/00; F17C2227/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A method of filling a pressure vessel having a neck portion with a cap covering the neck, the cap including a diaphragm and an externally and internally threaded sleeve to retain the diaphragm, the method comprising the sequential steps of: securing a structure into threaded engagement with the exterior of the sleeve while maintaining a flow path between the diaphragm and neck portion; enveloping the vessel in an enclosure; locking the enclosure to form a fluidtight enclosure; filling the vessel with a fluid to a predetermined high pressure; rotating the structure to tighten the cap and thereby close the flow path; venting the enclosure; unlocking the enclosure; and removing the structure from the sleeve.
Claim 2
Independent Claim
114 words
A method of filling a pressure vessel having a neck portion with a cap covering the neck, the cap including a diaphragm and an externally and internally threaded sleeve to retain the diaphragm, the method comprising the sequential steps of: securing a structure into threaded engagement with the exterior of the sleeve while maintaining a flow path between the diaphragm and neck portion; enveloping the vessel in an enclosure; locking the enclosure to form a fluidtight enclosure; filling the vessel with a fluid to a predetermined high pressure; rotating the structure to tighten the cap and thereby close the flow path; venting the enclosure; unlocking the enclosure; and removing the structure from the sleeve.
Claim 3
Dependent Claim
27 words
The method as defined in claim 1 further comprising: weighing the vessel after removing the structure to ascertain the weight increase from a previously recorded empty weight.
Claim 4
Dependent Claim
20 words
The method as defined in claim 2 further comprising: crimping the sleeve to lock the cap after weighing the vessel.
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |