Patent US3844339A successfully refreshed from Google Patents.
US3844339A
Expired / Lapsed
US
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Inflatable hall
Assignee: Individual
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Filing: 1972-03-14
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Granted: 1974-10-29
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Expires: 1992-03-14
Abstract
Abstract The present invention relates to an inflatable hall or bag comprising a cover that is anchored in the ground and is under superpressure on the inside. This inflatable hall is provided with a covering made up of two superposed foils, with an air cushion disposed therebetween, which is in communication with the air-filled hall space through the inner foil. The amount of spacing between the two foils can be adjusted by blower means and by changing the permeability of the foil material to air. The temperature of the air inside the hall and inside the space between the two foils can be controlled by heating means and cooling means being connected to the blower means.
Inventors
- 👤 V Kranz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:43
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/20; E04H15/22; E04H2015/202; E04H2015/203; E04H2015/204; E04H2015/206; E04H2015/209
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
An inflatable hall comprising a covering anchored in the ground, blower means maintaining said covering under inside positive air pressure to provide an air filled hall spaced, said covering being made up of an outer foil and an inner foil, said foils disposed above one another, a supporting network of ropes extending in criss-cross fashion and engaging the outer surface of the outer foil to urge it toward the inner foil and to form a plurality of pockets between the inner and outer foils and means communicating said pockets through said inner foil with said air filled hall space.
Claim 2
Dependent Claim
99 words
An inflatable hall comprising a covering anchored in the ground, blower means maintaining said covering under inside positive air pressure to provide an air filled hall spaced, said covering being made up of an outer foil and an inner foil, said foils disposed above one another, a supporting network of ropes extending in criss-cross fashion and engaging the outer surface of the outer foil to urge it toward the inner foil and to form a plurality of pockets between the inner and outer foils and means communicating said pockets through said inner foil with said air filled hall space.
Claim 3
Dependent Claim
69 words
The inflatable hall as defined in claim 1 and in which said foils comprise individual webs of material being airpermeable at the welding seams, said welding seams of said inner foil comprising said communication means, the welding seams in said outer foil and the welding seams in the inner foil being arranged in a laterally offset manner with respect to each other to promote air flow through said pockets.
Claim 4
Dependent Claim
32 words
An inflatable hall as defined in claim 1 and in which the outer foil comprises a relatively elastic material and said inner foil comprises a relatively sturdier material than said outer foil.
Claim 5
Dependent Claim
34 words
An inflatable hall as defined in claim 1 and in which said blower means includes temperature controlling means for selectively heating or cooling the air supplied to said hall space and to said pockets.
Claim 6
Dependent Claim
47 words
An inflatable hall as defined in claim 1 and in which said foils are sealed from each other at the ground by sealing means and said blower means is operable to blow air from inside the hall into the space between said foils through said sealing means.
Claim 7
Dependent Claim
24 words
An inflatable hall as defined in claim 5 and in which the sealing means of both of the foils comprise a common ground seal.
References Cited (Backward Citations)
US3256895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |