Patent US4147272A successfully refreshed from Google Patents.
US4147272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure relief device
Assignee: Newell Companies Inc
•
Filing: 1977-05-06
•
Granted: 1979-04-03
•
Expires: 1997-05-06
Abstract
Abstract A pressure relief device for a high pressure gas cylinder of the type that is usable for oxy-fuel torches. The device comprises an aperture in the wall of the cylinder and a eutectic solder filling the aperture. The aperture and plug are also positionable in a substantially planar wall portion that is depressed below the surrounding cylinder wall to protect the plug from dropped objects or inadvertent poking and scraping by the user.
Inventors
- 👤 Irving H. Stenner
- 👤 John M. Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:58
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/70; F; F16; F16K; F16K17/00; F16K17/02; F16K17/14; F17; F17C; F17C13/00; F17C13/12; F17C13/123; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/03; F17C2201/032; F17C2201/05; F17C2201/058; F17C2203/00; F17C2203/06; F17C2203/068; F17C2203/069; F17C2205/00; F17C2205/01; F17C2205/0153; F17C2205/018; F17C2205/03; F17C2205/0302; F17C2205/0311; F17C2205/0314; F17C2205/0323; F17C2205/0332; F17C2205/0388; F17C2205/0394; F17C2221/00; F17C2221/01; F17C2221/011; F17C2221/03; F17C2221/032; F17C2221/035; F17C2223/00; F17C2223/01; F17C2223/0107; F17C2223/0123; F17C2223/03; F17C2223/036; F17C2260/00; F17C2260/02; F17C2260/021; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
In a high pressure gas cylinder of the type usable for an oxy-fuel torch and having a valved dome-shaped end portion, wherein the improvement comprises at least one pressure relief means comprising a depression in the wall of the end portion of the cylinder, said depression having a substantially planar portion, means defining at least one aperture in the planar portion of the depression and a eutectic solder filling in each aperture.
Claim 2
Dependent Claim
72 words
In a high pressure gas cylinder of the type usable for an oxy-fuel torch and having a valved dome-shaped end portion, wherein the improvement comprises at least one pressure relief means comprising a depression in the wall of the end portion of the cylinder, said depression having a substantially planar portion, means defining at least one aperture in the planar portion of the depression and a eutectic solder filling in each aperture.
Claim 3
Dependent Claim
18 words
The cylinder according to claim 1, wherein each aperture has a diameter of about 0.015 to 0.100 inches.
Claim 4
Dependent Claim
17 words
The cylinder according to claim 2, wherein each aperture has a diameter of about 0.030 to 0.035.
Claim 5
Dependent Claim
23 words
The cylinder according to claim 1, wherein the planar wall portion is depressed at least about 0.02 inches from the surrounding cylinder wall.
Claim 6
Dependent Claim
20 words
The cylinder according to claim 4, wherein each depression is circular and has a maximum diameter of about 0.18 inches.
Claim 7
Dependent Claim
18 words
The cylinder according to claim 4, wherein each aperture has a diameter of about 0.015 to 0.100 inches.
Claim 8
Dependent Claim
18 words
The cylinder according to claim 4, wherein each aperture has a diameter of about 0.030 to 0.035 inches.
References Cited (Backward Citations)
US1973182A
Cited
US2793504A
Cited
US2825325A
Cited
US3064740A
Cited
US3181589A
Cited
US3362063A
Cited
US3357601A
Cited
US3388962A
Cited
US3515308A
Cited
US3574506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-02 | 1982-10-02 | 1983-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-02 | 1986-10-02 | 1987-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-02 | 1990-10-02 | 1991-04-03 | $7700.00 | Window Closed / Lapsed |