US3909919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of joining the edge portions of two sheets
Assignee: Nissan Motor Co Ltd
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Filing: 1974-01-29
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Granted: 1975-10-07
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Expires: 1994-01-29
Abstract
Abstract Edge portions of two sheets are provided with a hole and a raised portion, respectively. The sheets are placed together with one edge portion extending beyond the other. Said one edge portion is then folded back over the other so that the raised portion of one sheet intrudes into the hole of the other sheet to firmly lock the sheets together.
Inventors
- 👤 Yoshiyuki Miyabayashi
- 👤 Hideo Takizawa
- 👤 Norihiro Tsuneishi
- 👤 Hiroyuki Aida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:59
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/02; B21D39/021; B21D39/026; F; F16; F16B; F16B17/00; F16B17/008; F16B5/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49922; Y10T29/49936
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
120 words
A method of joining two sheets, comprising; a. providing a first sheet with a hole extending through an edge portion of the sheet; b. providing an edge portion of a second sheet with a raised portion having a shape conjugate to the shape of said hole; c. placing the sheets together with at least parts of them overlying one another and with one of said edge portions disposed adjacenT to and extending beyond the other edge portion; and d. thereafter folding said one edge portion back to place the two edge portions in mutually overlying relationship, to insert said raised portion into said hole and thereby to hold mating surfaces of the edge portions in fixed contact with one another.
Claim 2
Independent Claim
120 words
A method of joining two sheets, comprising; a. providing a first sheet with a hole extending through an edge portion of the sheet; b. providing an edge portion of a second sheet with a raised portion having a shape conjugate to the shape of said hole; c. placing the sheets together with at least parts of them overlying one another and with one of said edge portions disposed adjacenT to and extending beyond the other edge portion; and d. thereafter folding said one edge portion back to place the two edge portions in mutually overlying relationship, to insert said raised portion into said hole and thereby to hold mating surfaces of the edge portions in fixed contact with one another.
Claim 3
Dependent Claim
35 words
A method as claimed in claim 1, in which said hole is provided extending through said edge portion extending beyond said other edge portion and said raised portion is provided on said other edge portion.
Claim 4
Dependent Claim
34 words
A method as claimed in claim 1, in which said raised portion is provided on said edge portion extending beyond said other edge portion and said hole is provided in said other edge portion.
Claim 5
Dependent Claim
21 words
A method as claimed in claim 1, in which the shapes of said hole and said raised portion are substantially circular.
Claim 6
Dependent Claim
20 words
A method as claimed in claim 1, in which the shapes of said hole and said raised portion are elongate.
Claim 7
Dependent Claim
21 words
A method as claimed in claim 2, in which said raised portion includes a free edge of said other edge portion.
Claim 8
Dependent Claim
26 words
A method as claimed in claim 3, in which said raised portion includes a free edge of said edge portion extending beyond the other edge portion.
Claim 9
Dependent Claim
32 words
A method as claimed in claim 1 in which said raised portion is provided with a tip smaller than said hole, to facilitate the inserting of the raised portion in said hole.
Claim 10
Dependent Claim
58 words
A method as claimed in claim 1, further including; providing said raised portion with a second hole extending through said portion but leaving a part of said portion raised; and bending said part of said raised portion over a part of said edge portion defining said first hole, incident to said folding back of said one edge portion.
Claim 11
Dependent Claim
34 words
A method as claimed in claim 1, in which said edge portions are shaped so that said hole and said raised portion inserted therein are disposed in a plane spaced from said mating surfaces.
Claim 12
Dependent Claim
85 words
A method as claimed in claim 1, further including; providing the edge portion of said first sheet with a raised portion adjacent said hole; and providing the edge portion of said other sheet with a hole extending through the respective edge portion, adjacent said raised portion thereof, and performing said folding so that said raised portion of the first sheet intrudes into said hole of the other sheet and that said raised portion of the other sheet intrudes into said hole of said first sheet.
Claim 13
Independent Claim
113 words
A method of joining two sheets, comprising; punching an edge portion of a first sheet to provide a first lug in a first hole in said edge portion; punching an edge portion of another sheet to provide a second lug in a second hole therein; placing the sheets together in at least partly mutually overlying relationship and with one of said edge portions disposed adjacent to and extending beyond the other edge portion; and folding said one edge portion back over said other edge portion so that said first and second lugs intrude into said second and first holes respectively and that mating surfaces of the sheets are in contact with one another.
Claim 14
Independent Claim
113 words
A method of joining two sheets, comprising; punching an edge portion of a first sheet to provide a first lug in a first hole in said edge portion; punching an edge portion of another sheet to provide a second lug in a second hole therein; placing the sheets together in at least partly mutually overlying relationship and with one of said edge portions disposed adjacent to and extending beyond the other edge portion; and folding said one edge portion back over said other edge portion so that said first and second lugs intrude into said second and first holes respectively and that mating surfaces of the sheets are in contact with one another.
References Cited (Backward Citations)
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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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |