US4137679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inverted, doubly-curved umbrella, hyperbolic paraboloid shells with structurally integrated upper diaphragm
Assignee: Individual
•
Filing: 1977-07-05
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Granted: 1979-02-06
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Expires: 1997-07-05
Abstract
Abstract A building unit which comprises a column adapted to be fitted to a foundation and supporting a plurality of identical, doubly-curved umbrella, hyperbolic paraboloid shells inverted so that their top edges form a plane figure, and a continuous, horizontal member integrated with said edges.
Inventors
- 👤 Daniel F. Tully
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:04
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/08; E04B7/10; E04B7/102; E04B1/00; E04B1/34; E04B1/3416
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
42 words
A building unit comprising a column adapted to be anchored to a foundation and supporting a plurality of doubly-curved, umbrella, hyperbolic paraboloid shells inverted so that their top edges form a plane figure and a continuous horizontal member integrated with said edges.
Claim 2
Dependent Claim
42 words
A building unit comprising a column adapted to be anchored to a foundation and supporting a plurality of doubly-curved, umbrella, hyperbolic paraboloid shells inverted so that their top edges form a plane figure and a continuous horizontal member integrated with said edges.
Claim 3
Dependent Claim
19 words
The building unit of claim 1 wherein there are secondary supports between said hyperbolic shells and said horizontal member.
Claim 4
Dependent Claim
29 words
The building unit of claim 1 made of cementitious material and having stiffening structures extending between the hyperbolic paraboloid sections and horizontal member comprising vertical columns and horizontal beams.
Claim 5
Dependent Claim
41 words
The building unit of claim 1 made of elements selected from the class consisting of steel elements and glass fiber reinforced resin and having stiffening structures extending between the hyperbolic paraboloid sections and horizontal member comprising vertical columns and horizontal beams.
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) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |