Patent US3837405A successfully refreshed from Google Patents.
US3837405A
Expired / Lapsed
US
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Fire protection system for arch supported membrane structures
Assignee: HOTTEL Corp
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Filing: 1973-05-11
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Granted: 1974-09-24
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Expires: 1993-05-11
Abstract
Abstract A fire protection system for an arch supported membrane structure comprising a plurality of hollow arches containing a cooling medium. The arches can be made water tight so that they can serve as water mains to supply a sprinkler or deluge system above or below the roof membrane.
Inventors
- 👤 C Huddle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:52
CPC Classifications
A; A62; A62C; A62C3/00; Y; Y10; Y10S; Y10S135/00; Y10S135/906
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
60 words
A fire protection system for an arch supported membrane structure comprised of a multiplicity of arches with curved bights mounted on a base or the ground; a flexible roof membrane operatively attached to said arches and tensioned between them to form a roof of compound curvature; at least one of said arches having a hollow cavity containing a cooling medium.
Claim 2
Dependent Claim
60 words
A fire protection system for an arch supported membrane structure comprised of a multiplicity of arches with curved bights mounted on a base or the ground; a flexible roof membrane operatively attached to said arches and tensioned between them to form a roof of compound curvature; at least one of said arches having a hollow cavity containing a cooling medium.
Claim 3
Dependent Claim
33 words
Same as claim 1, except that said arch with a hollow cavity has a relief valve connected to its hollow cavity to vent off air, vapor or/and liqUid to keep the arch cool.
Claim 4
Dependent Claim
30 words
Same as claim 1, except that said hollow cavity in said arch serves as a conduit between a fire quenching liquid supply system and a fire quenching liquid distribution system.
Claim 5
Dependent Claim
17 words
Same as claim 3, except that said fire quenching liquid distribution system includes a liquid spray device.
Claim 6
Dependent Claim
18 words
Same as claim 4, except that said liquid spray device is automatically operated by a rise in temperature.
Claim 7
Dependent Claim
24 words
Same as claim 4, except that said fire quenching distribution system includes at least one branch conduit operatively attached to said hollow arch conduit.
Claim 8
Dependent Claim
19 words
Same as claim 3, except that said hollow arch conduit is operatively connected to a roof membrane wetting system.
Claim 9
Dependent Claim
20 words
Same as claim 7 except that said roof (spray nozzles are) wetting system is controlled by a pressure sensitive device.
Claim 10
Dependent Claim
35 words
Same as claim 3, except that said hollow arch serves as a dry conduit between a control valve that is operatively connected to a pressurized fire quenching supply system and said fire quenching distribution system.
Claim 11
Dependent Claim
16 words
Same as claim 9, except that said control valve is operated by a heat sensing device.
Claim 12
Dependent Claim
20 words
Same as claim 9, except that the hollow arch is segmented with the joints sufficiently tight to prevent excess leakage.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |