Patent US3667676A successfully refreshed from Google Patents.
Patent US3762121A successfully refreshed from Google Patents.
US3762121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof construction
Assignee: Individual
•
Filing: 1972-06-16
•
Granted: 1973-10-02
•
Expires: 1992-06-16
Abstract
Abstract A roof structure comprises an assembly of sheet metal panels secured to a rafter by securing means extending through the panels, and has a waterproof panel joint in which the adjacent marginal edges of a pair of panels are folded back to overlie the securing means. The pair of panels thus provide a pair of generally parallel adjacent fold edges, and these fold edges are shrouded by a sheet metal cap having a pair of retroflex marginal edge portions interleaved with the folded marginal edge of the panels and retained thereby. The panels are each stepped adjacent to their marginal edges to conform to the shape of the rafter to which they are secured, and the marginal edge portions of the cap provide a pair of fold edges which project downwardly and outwardly from the tops of the steps formed by the panels.
Inventors
- 👤 J Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:02
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/36; E04D3/366; E04D3/40
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
148 words
In a roof structure comprising an assembly of sheet metal panels secured to a rafter by securing means extending through the panels, a weatherproof panel joint in which the adjacent marginal edges of a pair of panels are folded back to overlie the securing means, the pair of panels thus providing a pair of generally parallel adjacent fold edges, in which the adjacent fold edges are shrouded by a sheet metal cap having a pair of retroflex marginal edge portions which are interleaved with the folded marginal edges of the panels and retained thereby, and in which the panels are each stepped adjacent to their marginal edges to conform to the shape of the rafter to which they are secured, the marginal edge portions of the cap providing a pair of fold edges which project downwardly and outwardly from the tops of the steps formed by the panels.
Claim 2
Dependent Claim
148 words
In a roof structure comprising an assembly of sheet metal panels secured to a rafter by securing means extending through the panels, a weatherproof panel joint in which the adjacent marginal edges of a pair of panels are folded back to overlie the securing means, the pair of panels thus providing a pair of generally parallel adjacent fold edges, in which the adjacent fold edges are shrouded by a sheet metal cap having a pair of retroflex marginal edge portions which are interleaved with the folded marginal edges of the panels and retained thereby, and in which the panels are each stepped adjacent to their marginal edges to conform to the shape of the rafter to which they are secured, the marginal edge portions of the cap providing a pair of fold edges which project downwardly and outwardly from the tops of the steps formed by the panels.
Claim 3
Dependent Claim
23 words
A roof structure according to claim 1, wherein each panel provides a corrugated surface, the corrugations of which extend parallel to the rafters.
Claim 4
Dependent Claim
158 words
A roof structure comprising an array of rectangular sheet metal panels supported by a roof frame, each panel extending between a pair of adjacent rafters of the roof frame and being secured thereto by nails, wherein the lateral marginal edges of the panels are folded back to overlie the nails, the adjacent marginal edges of each pair of panels thus providing a pair of generally parallel adjacent fold edges, wherein each pair of adjacent fold edges is shrouded by a sheet metal cap having a pair of retroflex marginal edge portions which are interleaved with the folded marginal edges of the panels and retained thereby, and wherein the panels are each stepped adjacent to their marginal edges to conform to the shape of the rafter to which they are secured, the marginal edge portions of the cap providing a pair of fold edges which project downwardly and outwardly from the tops of the steps formed by the panels.
Claim 5
Dependent Claim
158 words
A roof structure comprising an array of rectangular sheet metal panels supported by a roof frame, each panel extending between a pair of adjacent rafters of the roof frame and being secured thereto by nails, wherein the lateral marginal edges of the panels are folded back to overlie the nails, the adjacent marginal edges of each pair of panels thus providing a pair of generally parallel adjacent fold edges, wherein each pair of adjacent fold edges is shrouded by a sheet metal cap having a pair of retroflex marginal edge portions which are interleaved with the folded marginal edges of the panels and retained thereby, and wherein the panels are each stepped adjacent to their marginal edges to conform to the shape of the rafter to which they are secured, the marginal edge portions of the cap providing a pair of fold edges which project downwardly and outwardly from the tops of the steps formed by the panels.
Claim 6
Dependent Claim
39 words
A roof structure according to claim 3, including a plurality of panels between each pair of rafters, wherein the adjacent longitudinal marginal edges of the panels are folded back and interleaved so as to define a downwardly facing step.
References Cited (Backward Citations)
US612024A
Cited
US615449A
Cited
US1182197A
Cited
US1669690A
Cited
US1963583A
Cited
US2231065A
Cited
US3107454A
Cited
US3381426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |