US3861339A
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: 1975-01-21
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Expires: 1994-01-29
Abstract
Abstract The edge portion of each sheet is provided with a rectangular pattern of ribs, and the sheets are placed together with one edge portion extending beyond the other. The former is folded back over the latter so that intersecting portions of the ribs are compressed to firmly lock the sheets together.
Inventors
- 👤 Hiroyuki Aida
- 👤 Norihiro Tsuneishi
- 👤 Hideo Takizawa
- 👤 Yoshiyuki Miyabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:57
CPC Classifications
F; F16; F16B; F16B5/00; B; B21; B21D; B21D39/00; B21D39/02; B21D39/021; B21D39/026; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49936
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
A method of joining two sheets at their edges, comprising the steps of: a. forming a plurality of substantially parallel ribs on a surface of the edge portion of one sheet; b. forming a plurality of substantially parallel ribs on a surface of the edge portion of the other sheet; c. placing the sheets together with one of the edge portions extending beyond the other edge portion; and d. tightly folding the edge portion extending beyond the other edge portion back over the other edge portion so that the surfaces of the sheets having the ribs formed thereon engage with each other and the ribs of the one sheet are spaced at least at portions thereof from the ribs of the other sheet.
Claim 2
Independent Claim
123 words
A method of joining two sheets at their edges, comprising the steps of: a. forming a plurality of substantially parallel ribs on a surface of the edge portion of one sheet; b. forming a plurality of substantially parallel ribs on a surface of the edge portion of the other sheet; c. placing the sheets together with one of the edge portions extending beyond the other edge portion; and d. tightly folding the edge portion extending beyond the other edge portion back over the other edge portion so that the surfaces of the sheets having the ribs formed thereon engage with each other and the ribs of the one sheet are spaced at least at portions thereof from the ribs of the other sheet.
Claim 3
Dependent Claim
115 words
A method as claimed in claim 1, further comprising the steps of; e. forming a plurality of substantially parallel secondary ribs on the surface of the edge portion of the one sheet substantially perpendicular to the ribs thereof; and f. forming a plurality of substantially parallel secondary ribs on the surface of the edge portion of the other sheet substantially perpendicular to the ribs thereof; prior to performing step c; and in which the secondary ribs of the two sheets are spaced at least at portions thereof from each other while performing step d; intersecting portions of ribs and secondary ribs being compressed during performance of step d to prevent relative movement between the sheets.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |