US3727356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated structures
Assignee: Individual
•
Filing: 1968-09-17
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Granted: 1973-04-17
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Expires: 1988-09-17
Abstract
Abstract A prefabricated structure constituting at least the major portion of a body formed of 12 hyperbolic paraboloidal panels respectively secured together at their edges, each panel having four equal edges enclosing substantial right angles and having a diagonal whose length is substantially equal to four-thirds the length of the panel edge, the ratio of the elevation of the panel to the edge length thereof being substantially equal to 0.44.
Inventors
- 👤 E Appenzeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:08
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/08; E04B7/10; E04B7/102; E04B1/00; E04B1/32; E04B2001/3217; E04B2001/327; E04B2001/3276; Y; Y10; Y10S; Y10S52/00; Y10S52/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
103 words
A prefabricated structure constituting at least the major portion of a body formed of 12 hyperbolic paraboloidal panels, each said panel having four edges and each said panel being secured to four adjacent panels at its four edges, each of the edges of each said panel being of equal length, each of the four angles of each panel defined by two adjacent edges being substantially a right angle, each panel having a diagonal whose length is substantially equal to four-thirds the length of the panel edge, whereby all adjoining corners of said panels lie along or within the surface of an imaginary sphere.
Claim 2
Dependent Claim
103 words
A prefabricated structure constituting at least the major portion of a body formed of 12 hyperbolic paraboloidal panels, each said panel having four edges and each said panel being secured to four adjacent panels at its four edges, each of the edges of each said panel being of equal length, each of the four angles of each panel defined by two adjacent edges being substantially a right angle, each panel having a diagonal whose length is substantially equal to four-thirds the length of the panel edge, whereby all adjoining corners of said panels lie along or within the surface of an imaginary sphere.
Claim 3
Dependent Claim
24 words
The structure of claim 1 having 14 corners, whereby eight of the corners of said body lie along the surface of an imaginary sphere.
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |