US3686818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandible reinforcement structure for inflatable domes
Assignee: Binishells New Systems Ltd
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Filing: 1969-11-20
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Granted: 1972-08-29
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Expires: 1989-11-20
Abstract
Abstract An expandable reinforcement for use in connection with a building method wherein a concrete structure is erected by inflation of an underlying air impervious membrane, the reinforcing structure being arranged in the form of a regular polygon and reinforcing elements radiate from each vertex of the polygon to each other vertex, there being a distribution of the end points of said reinforcing elements at any vertex. The reinforcing elements which elongate during inflation are constructed of two rods, one hooked at one end and the other at the other end, with the unhooked ends free, and the rods slidably disposed within a coil spring. A method of vibrating the inflated structure is also disclosed.
Inventors
- 👤 Dante Bini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:12
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/04; E04G11/045; E04H; E04H15/00; E04H15/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
219 words
In a reinforcing frame including a plurality of elongated reinforcing members; at least one of said reinforcing members comprising: a pair of elongated reinforcing rods in close parallel relationship; and means connected to said rods for permitting relative longitudinal movement therebetween and for preventing substantial transverse relative movement therebetween, said frame further including a plurality of angularly related radially extending members, each of said radially extending members comprising: a pair of elongated reinforcing rods in close parallel relationship; and means connected to said rods for permitting relative longitudinal movement therebetween and for preventing substantial transverse relative movement therebetween, the rods in each of said radially extending members each having one end remote from the other rod in said member and the other end adjacent said other rod in said member, and further comprising a peripheral member and a central member, and means for securing the remote ends of the rods in each of said radially extending members respectively to said peripheral member and said central member, said means for permitting longitudinal movement and for preventing transverse movement is a helical spring in surrounding relation with the two rods in each of said radially extending members, the reinforcing frame further comprising means for fixedly securing the ends of said coil springs respectively to said peripheral member and said central member.
Claim 2
Dependent Claim
219 words
In a reinforcing frame including a plurality of elongated reinforcing members; at least one of said reinforcing members comprising: a pair of elongated reinforcing rods in close parallel relationship; and means connected to said rods for permitting relative longitudinal movement therebetween and for preventing substantial transverse relative movement therebetween, said frame further including a plurality of angularly related radially extending members, each of said radially extending members comprising: a pair of elongated reinforcing rods in close parallel relationship; and means connected to said rods for permitting relative longitudinal movement therebetween and for preventing substantial transverse relative movement therebetween, the rods in each of said radially extending members each having one end remote from the other rod in said member and the other end adjacent said other rod in said member, and further comprising a peripheral member and a central member, and means for securing the remote ends of the rods in each of said radially extending members respectively to said peripheral member and said central member, said means for permitting longitudinal movement and for preventing transverse movement is a helical spring in surrounding relation with the two rods in each of said radially extending members, the reinforcing frame further comprising means for fixedly securing the ends of said coil springs respectively to said peripheral member and said central member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |