Patent US3629988A successfully refreshed from Google Patents.
US3629988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roofing tiles
Assignee: ALEX HARVEY INDUSTRIES Ltd
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Filing: 1970-02-16
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Granted: 1971-12-28
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Expires: 1990-02-16
Abstract
Abstract A roofing panel having a pattern of well-defined fluting extending across it with an upturned one edge and a downturned opposite edge extending across ends of the flutings characterized in that at least at one end of the pattern has bevelled or sloping areas.
Inventors
- 👤 Jan Hendricus Zylstra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:46
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/24; E04D3/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
116 words
A sheet metal roofing tile comprising a pattern of welldefined channels extending across it with a vertical upturned one edge connecting with a horizontal fold with a straight folding line providing a step and a downturned opposite edge extending across ends of the channels, each channel consisting of a base, angled sides and a sloping area connecting with the sloping sides extending from the respective end of the base and connecting with the vertical upturned one edge, and a further sloping area at the other end of respective sides of adjacent channels extending downwardly from a crown between such channels and connecting with the downturned opposite edge, and each sloping area being of a triangular shape.
Claim 2
Dependent Claim
116 words
A sheet metal roofing tile comprising a pattern of welldefined channels extending across it with a vertical upturned one edge connecting with a horizontal fold with a straight folding line providing a step and a downturned opposite edge extending across ends of the channels, each channel consisting of a base, angled sides and a sloping area connecting with the sloping sides extending from the respective end of the base and connecting with the vertical upturned one edge, and a further sloping area at the other end of respective sides of adjacent channels extending downwardly from a crown between such channels and connecting with the downturned opposite edge, and each sloping area being of a triangular shape.
Claim 3
Dependent Claim
37 words
A sheet metal roofing panel as claimed in claim 1 wherein each end edge is sloped downwards for providing an overlapping joint adjacent upturned and downturned straight edges of two respective panels when arranged on a roof.
Claim 4
Dependent Claim
43 words
A sheet metal roofing panel as claimed in claim 1, and wherein a base of each triangular shape is defined by a straight line with a downturned flange of the panel provided by a vertical fold along the respective edge of the panel.
Claim 5
Dependent Claim
30 words
A sheet metal roofing panel as claimed in clam 3, wherein planes of the downturned flange, the further ends and the base of each channel intersect in a straight line.
Claim 6
Dependent Claim
20 words
A sheet metal roofing panel as claimed in claim 3, wherein a bottom edge of the downturned flange is radiused.
Claim 7
Dependent Claim
38 words
A sheet metal roofing panel as claimed in claim 3, wherein along each crown a groove extends from the upturned edge to about the base of the further sloping ends and is arranged in parallEl with adjacent channels.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |