US4318491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toroidal pressure vessel
Assignee: Individual
•
Filing: 1980-04-07
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Granted: 1982-03-09
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Expires: 2000-04-07
Abstract
Abstract A toroidal shaped container including a body made from tubing and formed into a ring is disclosed. The tube is bent so that the tube ends are aligned and spaced apart a distance with a closure piece inserted between the aligned ends and welded thereto to form a closed container. In a preferred embodiment the closure piece includes a boss projecting radially from the closure piece with an inwardly extending threaded aperture formed in the boss penetrating the interior of the pressure vessel.
Inventors
- 👤 Richard E. Nelson
- 👤 Thomas J. Starr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:33
CPC Classifications
F; F17; F17C; F17C1/00; B; B65; B65D; B65D88/00; B65D88/02; F17C2201/00; F17C2201/01; F17C2201/0133; F17C2201/05; F17C2201/058; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0614; F17C2203/0617; F17C2203/0634; F17C2203/0636; F17C2205/00; F17C2205/01; F17C2205/0153; F17C2205/0169; F17C2205/0188; F17C2205/03; F17C2205/0302; F17C2205/0305; F17C2205/0311; F17C2205/0323; F17C2205/0388; F17C2205/0394; F17C2209/00; F17C2209/22; F17C2209/221; F17C2209/23; F17C2209/232; F17C2270/00; F17C2270/07
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
118 words
a toroidal shaped container comprising: a body made from tubing with an inside diameter and outside diameter formed into a ring with tube ends aligned and spaced apart a distance; a closure piece welded between the aligned ends to form a closed container; a short tube exceeding in length the distance between aligned ends, having an outside diameter equalling the tubing outside diameter, an inside diameter less than the tubing inside diameter, a reduced diameter formed along each end of the closure piece producing a pair of opposed shoulders, said reduced diameter snugly engaging the tubing inside diameter with the shoulders abutting tube ends, a weld deposited along the abutting ends and shoulders to form an integrated structure.
Claim 2
Dependent Claim
118 words
a toroidal shaped container comprising: a body made from tubing with an inside diameter and outside diameter formed into a ring with tube ends aligned and spaced apart a distance; a closure piece welded between the aligned ends to form a closed container; a short tube exceeding in length the distance between aligned ends, having an outside diameter equalling the tubing outside diameter, an inside diameter less than the tubing inside diameter, a reduced diameter formed along each end of the closure piece producing a pair of opposed shoulders, said reduced diameter snugly engaging the tubing inside diameter with the shoulders abutting tube ends, a weld deposited along the abutting ends and shoulders to form an integrated structure.
Claim 3
Dependent Claim
33 words
The container as defined in claim 1 further comprising: a boss formed on the closure piece extending radially outward; and the boss including a threaded aperture formed therein to receive a pressure fitting.
Claim 4
Dependent Claim
149 words
The container as defined in claim 1 further comprising: a boss formed on the closure piece; a threaded bore formed in said boss with a valve seat in communication with said container formed at a bottom thereof; a gland threadingly engaging said threaded bore, said gland including a seal and a threaded central bore axially aligned with said threaded bore; a valve stem threadingly engaging said central bore; a transverse bore in communication with said threaded bore, said transverse bore threaded to receive a pressure fitting; and wherein rotation of said valve stem in a first direction spaces said valve stem from said valve seat allowing communication between said threaded bore and the container, and rotation of said valve stem in a counter direction abuts said valve stem in a counter direction abuts said valve stern against said valve seat preventing communication between said container and said threaded bore.
Claim 5
Dependent Claim
40 words
The container as defined in claim 1 further comprising: a boss formed on the closure piece extending radially inward toward the center of the Toroidal shaped container; and the boss including a threaded aperture formed therein to receive a fitting.
References Cited (Backward Citations)
US3392994A
Cited
US3903931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |