US3270410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of prestressed fastening of materials
Assignee: BRILES Manufacturing
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Filing: 1963-05-20
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Granted: 1966-09-06
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Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Salter Larry
- 👤 Estates Palos Verdes
- 👤 Franklin S Briles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:25
CPC Classifications
B; B23; B23P; B23P9/00; B23P9/02; B23P9/025; C; C21; C21D; C21D7/00; C21D7/02; C21D7/04; F; F16; F16B; F16B31/00; F16B31/06; F16B5/00; F16B5/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49945; Y10T29/49947; Y10T29/49948
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A METHOD OF PRESTRESSED FASTENING OF LAYERS OF MATERIAL WHICH COMPRISES THE STEPS OF: PROVIDING A TAPERED BORE THROUGH THE LAYERS OF MATERIAL TO BE FASTENED; APPLYING EXPANSIVE FORCE TO THE LAYERS OF MATERIAL SUBSTANTIALLY UNIFORMLY AND SIMULTANEOUSLY THROUGH SUBSTANTIALLY THE ENTIRE DEPTH OF THE BORE UNTIL THE ELASTIC LIMIT OF THE MATERIAL HAS BEEN EXCEEDED; RELIEVING THE EXPANSIVE FORCE; AND PROVIDING AN INTERFACE FIT BETWEEN A TAPERED FASTENING DEVICE AND THE TAPERED BORE SO AS TO PRESTRESS THE LAYERS OF MATERIAL UNDER COMPRESSION IN THE AREA SURROUNDING THE TAPERED BORE.
Claim 2
Independent Claim
91 words
A METHOD OF PRESTRESSED FASTENING OF LAYERS OF MATERIAL WHICH COMPRISES THE STEPS OF: PROVIDING A TAPERED BORE THROUGH THE LAYERS OF MATERIAL TO BE FASTENED; APPLYING EXPANSIVE FORCE TO THE LAYERS OF MATERIAL SUBSTANTIALLY UNIFORMLY AND SIMULTANEOUSLY THROUGH SUBSTANTIALLY THE ENTIRE DEPTH OF THE BORE UNTIL THE ELASTIC LIMIT OF THE MATERIAL HAS BEEN EXCEEDED; RELIEVING THE EXPANSIVE FORCE; AND PROVIDING AN INTERFACE FIT BETWEEN A TAPERED FASTENING DEVICE AND THE TAPERED BORE SO AS TO PRESTRESS THE LAYERS OF MATERIAL UNDER COMPRESSION IN THE AREA SURROUNDING THE TAPERED BORE.
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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |