Patent US3574377A successfully refreshed from Google Patents.
US3574377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushioned joint of modular iron to steel
Assignee: HARRIMAN Manufacturing CO
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Filing: 1968-12-24
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Granted: 1971-04-13
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Expires: 1988-12-24
Abstract
Abstract This is a cushioned joint, fabricated from materials having different coefficients of thermal expansion and contraction, in particular a welding of nodular iron to steel. A surface on a member made of one of the materials is positioned adjacent a surface of a second member made of the other material. A cushioning means is positioned between the two surfaces spacing the one surface from the other. The members are then welded together at positions distal from the cushioning means and the latter provides space for relative movement between the members due to their differing coefficients of thermal contraction as they cool after the welding is completed.
Inventors
- 👤 William H Petitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:10
CPC Classifications
B; B23; B23K; B23K33/00; B23K33/004; F; F16; F16B; F16B5/00; F16B5/08; Y; Y10; Y10T; Y10T403/00; Y10T403/21; Y10T403/217
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
100 words
In a weld joint between the surfaces of first and second materials having different coefficients of thermal contraction, weld regions therebetween a series of projections of said first material from a portion of said first material to be welded to said second material external of the weld regions, said projections extending in a direction perpendicular from said surface of said portion of said first material a suitable distance to embed within said second material upon welding thus offering resistance to said contraction equal to the product of the areas of said projections and the compressive strength of said first material.
Claim 2
Dependent Claim
100 words
In a weld joint between the surfaces of first and second materials having different coefficients of thermal contraction, weld regions therebetween a series of projections of said first material from a portion of said first material to be welded to said second material external of the weld regions, said projections extending in a direction perpendicular from said surface of said portion of said first material a suitable distance to embed within said second material upon welding thus offering resistance to said contraction equal to the product of the areas of said projections and the compressive strength of said first material.
Claim 3
Dependent Claim
120 words
A joint of nodular iron and steel comprising: A. a section of nodular iron having a first surface; B. a section of steel having a second surface; C. a compressible cushion located between said sections of nodular iron and steel and located in abutting contact relationship with and between said first and second surfaces; said cushion consisting of projections of nodular iron from said sections of nodular iron, said projections extending in a direction perpendicular to said first surface of said section of nodular iron a suitable distance to embed within said second surface of said steel section; and D. weld material located adjacent and between said sections of nodular iron and steel at preselected points external of said cushion.
Claim 4
Dependent Claim
120 words
A joint of nodular iron and steel comprising: A. a section of nodular iron having a first surface; B. a section of steel having a second surface; C. a compressible cushion located between said sections of nodular iron and steel and located in abutting contact relationship with and between said first and second surfaces; said cushion consisting of projections of nodular iron from said sections of nodular iron, said projections extending in a direction perpendicular to said first surface of said section of nodular iron a suitable distance to embed within said second surface of said steel section; and D. weld material located adjacent and between said sections of nodular iron and steel at preselected points external of said cushion.
References Cited (Backward Citations)
US2038439A
Cited
US2143033A
Cited
US2362505A
Cited
US2376574A
Cited
US3137937A
Cited
DE1201696B
Cited
US3346248A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |