US3898775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable arena structure
Assignee: Individual
•
Filing: 1973-08-20
•
Granted: 1975-08-12
•
Expires: 1993-08-20
Abstract
Abstract An air pressure supported structure comprising an envelope of generally flexible sheet material adapted to be maintained in erected disposition by positive fluid pressure provided within the envelope, the sheet material forming the envelope having a generally rectangular configuration and being folded on itself with the ends secured together, the envelope having means arranged to mount the peripheral edges on a generally rectangular support plane so as to provide an erected envelope with overhanging end extensions diverging upwardly and outwardly from the support plane. Means are also provided for personnel access to the envelope, with the chamber including means for readily discharging debris from the interior of the envelope to the exterior thereof.
Inventors
- 👤 William B Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:25
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/20; E04H15/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
In an air pressure supported structure comprising an envelope of generally flexible sheet material adapted to be maintained in erected disposition by positive fluid pressure provided within the envelope: a. said sheet material forming the envelope being in the form of a rectangular member with a central axis, a transverse axis and first lateral edge surfaces parallel to said transverse axis, and second lateral edge surfaces parallel to said central axis, and being folded upon itself generally along the said central axis to form a member with a generally rectangular configuration and with the superimposed portions of said first lateral edge surfaces of said rectangular member being secured together to form the envelope; b. support means arranged to mount the second lateral edge surfaces of said envelope on a generally rectangular support plane so as to provide, upon inflation, an erected envelope with end extensions diverging upwardly and outwardly from said support plane.
Claim 2
Dependent Claim
153 words
In an air pressure supported structure comprising an envelope of generally flexible sheet material adapted to be maintained in erected disposition by positive fluid pressure provided within the envelope: a. said sheet material forming the envelope being in the form of a rectangular member with a central axis, a transverse axis and first lateral edge surfaces parallel to said transverse axis, and second lateral edge surfaces parallel to said central axis, and being folded upon itself generally along the said central axis to form a member with a generally rectangular configuration and with the superimposed portions of said first lateral edge surfaces of said rectangular member being secured together to form the envelope; b. support means arranged to mount the second lateral edge surfaces of said envelope on a generally rectangular support plane so as to provide, upon inflation, an erected envelope with end extensions diverging upwardly and outwardly from said support plane.
Claim 3
Dependent Claim
30 words
The air pressure supported structure as defined in claim 1 being particularly characterized in that said generally flexible sheet material is formed from a plurality of generally rectangular shaped segments.
Claim 4
Dependent Claim
29 words
The air pressure supported structure as defined in claim 1 being particularly characterized in that said support plane has a length dimension which is approximately twice the width dimension.
Claim 5
Dependent Claim
109 words
The air pressure supported structure as defined in claim 1 being particularly characterized in that a personnel access air-lock chamber is provided having an enclosure with an upper wall panel and a pair of lateral side panels, an inner and outer generally impervious doors at opposed ends thereof and having a support platform disposed at a finite distance above the base of said side panels to form a personnel passage chamber thereover and a debris chamber therebelow, a normally closed trap door means communicating with said debris chamber and being disposed adjacent said inner access door and a normally open debris receiving port disposed adjacent said outer access door.
Claim 6
Dependent Claim
75 words
The air pressure supported structure as defined in claim 4 being particularly characterized in that said outer access door is hingedly mounted to one of said lateral side panels and arranged to open inwardly, and fan means are disposed within said chamber supported on said upper wall panel, and duct means establishing communication between said fan and the interior of said envelope for establishing air flow through said outer access door and said fan means.
References Cited (Backward Citations)
US2355248A
Cited
US3059657A
Cited
US3042051A
Cited
US3254457A
Cited
US3497606A
Cited
US3561174A
Cited
US3719341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |