US3942239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of lining a steel structure
Assignee: Skega AB
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Filing: 1974-03-05
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Granted: 1976-03-09
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Expires: 1994-03-05
Abstract
Abstract A method of lining a steel wall surface with an elastomeric material which involves applying a layer of elastomeric material against said steel wall surface and holding said elastomeric material against said steel surface with a plurality of bolts and washers, said bolts being butt welded to said steel surface.
Inventors
- 👤 Gert Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:52
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/06; B60; B60P; B60P1/00; B60P1/04; B60P1/28; B60P1/283; B60P1/286; B32B3/00; B32B3/10; B32B3/14; B60R; B60R13/00; B60R13/01; B32B2311/00; B32B2311/30; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49892
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
A method for lining a steel wall surface with a layer of elastomeric material which comprises: a. disposing a layer of elastomeric material directly against said steel wall surface, said elastomeric material having a plurality of holes therein which provide access through said layer of elastomeric material to said steel wall surface, b. inserting bolts into each of said holes, c. butt welding each bolt end which contacts said steel wall surface directly to said steel wall surface so that each bolt, when welded to said steel wall surface, extends substantially perpendicularly to said steel wall surface, the end of the bolt furthest from steel wall surface being threaded, d. placing a washer over the threaded end of each bolt and resting it against a recessed shoulder portion of said elastomeric material that is spaced away from said steel wall surface, e. tightening a nut on the threaded end of each bolt so as to both press said washer downwardly against said elastomeric material and to press said elastomeric material against said steel wall surface, and f. inserting a cylinder of elastomeric material into the hole above said nut after the nut is tightened on said bolt.
Claim 2
Independent Claim
197 words
A method for lining a steel wall surface with a layer of elastomeric material which comprises: a. disposing a layer of elastomeric material directly against said steel wall surface, said elastomeric material having a plurality of holes therein which provide access through said layer of elastomeric material to said steel wall surface, b. inserting bolts into each of said holes, c. butt welding each bolt end which contacts said steel wall surface directly to said steel wall surface so that each bolt, when welded to said steel wall surface, extends substantially perpendicularly to said steel wall surface, the end of the bolt furthest from steel wall surface being threaded, d. placing a washer over the threaded end of each bolt and resting it against a recessed shoulder portion of said elastomeric material that is spaced away from said steel wall surface, e. tightening a nut on the threaded end of each bolt so as to both press said washer downwardly against said elastomeric material and to press said elastomeric material against said steel wall surface, and f. inserting a cylinder of elastomeric material into the hole above said nut after the nut is tightened on said bolt.
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) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |