US3862490A
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: 1975-01-28
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Expires: 1994-01-29
Abstract
Abstract An edge portion of one sheet is formed with elongated slots and a raised portion between each slot and the edge of the sheet. The two sheets are then placed together so that an edge portion of the other sheet extends beyond the edge portion of the one sheet. The edge portion of the other sheet is folded back over the edge portion of the one sheet so that the raised portions are flattened and sections of the edge portion between the raised portions and the edge are deformed to fill a gap between the edge of the one sheet and the folded end of the other sheet. Excess deformation is absorbed by deformation of other sections of the edge portion of the one sheet into the slots.
Inventors
- 👤 Norihiro Tsuneishi
- 👤 Yoshiyuki Miyabayashi
- 👤 Hiroyuki Aida
- 👤 Hideo Takizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:57
CPC Classifications
F; F16; F16B; F16B5/00; B; B21; B21D; B21D39/00; B21D39/02; B21D39/021; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49936
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
256 words
A method of joining two sheets at their edges, comprising the steps of: a. forming an elongated slot through an edge portion of one sheet and an elongated raised portion on the same edge portion so that the slot and the raised portion are substantially parallel to the edge of the edge portion and the raised portion is formed between the slot and the edge of the edge portion; b. placing the sheets together so that the edge portion of the other sheet extends beyond the edge portion of the one sheet which was formed according to step a; c. partially folding the edge portion of the other sheet back over the edge portion of the one sheet so that a predetermined gap is provided between the edge of the edge portion of the one sheet and the inner surface of the folded end of the other sheet; and d. completely and tightly folding the edge portion of the other sheet back over the edge portion of the one sheet so that the raised portion is flattened and a section of the edge portion of the one sheet between the raised portion and the edge thereof deforms parallel to the surface of the other sheet to fill the gap and engage with the inner surface of the folded end of the other sheet, and a section of the edge portion of the one sheet between the raised portion and the slot thereof deforms parallel to the surface of the other sheet to partially fill thE slot.
Claim 2
Independent Claim
256 words
A method of joining two sheets at their edges, comprising the steps of: a. forming an elongated slot through an edge portion of one sheet and an elongated raised portion on the same edge portion so that the slot and the raised portion are substantially parallel to the edge of the edge portion and the raised portion is formed between the slot and the edge of the edge portion; b. placing the sheets together so that the edge portion of the other sheet extends beyond the edge portion of the one sheet which was formed according to step a; c. partially folding the edge portion of the other sheet back over the edge portion of the one sheet so that a predetermined gap is provided between the edge of the edge portion of the one sheet and the inner surface of the folded end of the other sheet; and d. completely and tightly folding the edge portion of the other sheet back over the edge portion of the one sheet so that the raised portion is flattened and a section of the edge portion of the one sheet between the raised portion and the edge thereof deforms parallel to the surface of the other sheet to fill the gap and engage with the inner surface of the folded end of the other sheet, and a section of the edge portion of the one sheet between the raised portion and the slot thereof deforms parallel to the surface of the other sheet to partially fill thE slot.
Claim 3
Dependent Claim
19 words
A method as claimed in claim 1, in which the elongated slot is longer than the elongated raised portion.
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) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |