Patent US4672780A successfully refreshed from Google Patents.
US4672780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building panels
Assignee: Individual
•
Filing: 1984-09-04
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Granted: 1987-06-16
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Expires: 2004-09-04
Abstract
Abstract Integral, elongated panels have sets of flanges arranged on lines which define folded, transversely triangular elements. These elements extend laterally across the panel, and are dimensioned such that a pair of adjacent parallel side edges of two corresponding panels can mate. The flanges preferably extend along the entire length of the lines defining the folded transversely triangular elements, and may usefully be linear and arranged on lines defining congruent elements with triangular faces, and sloping side edge portions of the panel. By such arrangement, a panel is obtained which in conjunction with other such panels, can produce a curved surface, which curvature may be reversed in direction in any point along a structure surface, by inverting the next adjacent series of panels.
Inventors
- 👤 David N. Lockwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:45
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/32; E04C2/326; E04B; E04B1/00; E04B1/32; E04B1/3211; E04B2001/3217; E04B2001/327; E04B2001/3276; E04B2001/3294; Y; Y10; Y10S; Y10S52/00; Y10S52/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
69 words
An integral, elongated panel strip comprising generally parallel sides and transversely folded converging corrugations alternately extending across the panel in opposite directions, each corrugation having at least three sloping triangular faces which converge at their apexes, said corrugations having in-sloping side edges, each side edge of a panel strip being identically shaped such that either side edge can mate congruently with either side edges of a corresponding panel strip.
Claim 2
Dependent Claim
69 words
An integral, elongated panel strip comprising generally parallel sides and transversely folded converging corrugations alternately extending across the panel in opposite directions, each corrugation having at least three sloping triangular faces which converge at their apexes, said corrugations having in-sloping side edges, each side edge of a panel strip being identically shaped such that either side edge can mate congruently with either side edges of a corresponding panel strip.
Claim 3
Dependent Claim
46 words
A panel strip as defined in claim 1 further comprising a reinforcing panel strip having a plurality of longitudinally folded parallel corrugations, each having two rectangular faces wherein a surface of said first panel strip is connected to a respective surface of the reinforcing panel strip.
Claim 4
Dependent Claim
18 words
A panel strip as defined in claim 2 wherein said rectangular faces are separated by a planar element.
Claim 5
Independent Claim
88 words
A method of construction a structure surface comprising the steps of: (a) supplying continuous sheet metal from a coil stock having parallel side edges; (b) transversely folding said sheet metal to produce a panel strip having identically shaped side edges defining converging corrugations extending across the panel in alternating directions, each corrugation having at least three sloping triangular faces which converge at the apexes; (c) positioning the panel strips with mating side edges parallel and adjacent one another; and (d) joining adjacent mating side edges of the panels.
Claim 6
Independent Claim
88 words
A method of construction a structure surface comprising the steps of: (a) supplying continuous sheet metal from a coil stock having parallel side edges; (b) transversely folding said sheet metal to produce a panel strip having identically shaped side edges defining converging corrugations extending across the panel in alternating directions, each corrugation having at least three sloping triangular faces which converge at the apexes; (c) positioning the panel strips with mating side edges parallel and adjacent one another; and (d) joining adjacent mating side edges of the panels.
Claim 7
Dependent Claim
22 words
A method as defined in claim 4 wherein an adjacent panel strip is inverted before being joined to a first panel strip.
Claim 8
Dependent Claim
72 words
A method as defined in claim 4 further comprising the steps of forming a plurality of reinforcing panel strips from sheet metal coil stock by longitudinally folding said sheet to form a plurality of parallel corrugations having rectangular faces; positioning said reinforcing panel strips parallel with said first panel strips with surfaces of said first panel strip adjacent to a respective surface of the reinforcing panel strip; and connecting such adjacent surfaces.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |