Patent US4294392A successfully refreshed from Google Patents.
US4294392A
Expired / Lapsed
US
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Method of joining a pair of metal parts
Assignee: ZF International UK Ltd
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Filing: 1979-12-28
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Granted: 1981-10-13
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Expires: 1999-12-28
Abstract
Abstract In a method of joining a pair of metal parts, one of the parts is provided with an insulative coating at its surface to be joined to the other part, while the forming surface of the other part is free of any coating and defines a plurality of substantially parallel, longitudinally extending splines. To effect the required join, the joining surfaces of the parts are urged into interengagement and are simultaneously caused to undergo relative vibrational movement in a direction substantially parallel with the splines on the other part whereby, on termination of the vibration, a welded joint is produced between the parts.
Inventors
- 👤 Nicholas J. Colloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:39
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/12; B23K20/1205; B23K20/10; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C65/081; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81433; B29C66/83; B29C66/832; B29C66/8322
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
88 words
A method of joining a pair of metal parts wherein: (a) at least one of the parts is provided with an insulative coating at its surface to be joined to the other part, (b) at least one of the parts defines a plurality of substantially parallel, longitudinally extending splines at its surface to be joined to the other part, and (c) the joining surfaces of the parts are urged into interengagement and are simultaneously caused to undergo relative vibrational movement in a direction substantially parallel with said splines.
Claim 2
Independent Claim
88 words
A method of joining a pair of metal parts wherein: (a) at least one of the parts is provided with an insulative coating at its surface to be joined to the other part, (b) at least one of the parts defines a plurality of substantially parallel, longitudinally extending splines at its surface to be joined to the other part, and (c) the joining surfaces of the parts are urged into interengagement and are simultaneously caused to undergo relative vibrational movement in a direction substantially parallel with said splines.
Claim 3
Independent Claim
94 words
A method of joining a pair of metal parts wherein: (a) one of the parts is provided with an insulative coating at its surface to be joined to the other part, (b) at the joining surface of the other part, the metal of the other part is free of any coating and defines a plurality of substantially parallel, longitudinally extend splines, and (c) the joining surfaces of the parts are urged into interengagement and are simultaneously caused to undergo relative vibrational movement in a direction substantially parallel with the splines on said other part.
Claim 4
Independent Claim
94 words
A method of joining a pair of metal parts wherein: (a) one of the parts is provided with an insulative coating at its surface to be joined to the other part, (b) at the joining surface of the other part, the metal of the other part is free of any coating and defines a plurality of substantially parallel, longitudinally extend splines, and (c) the joining surfaces of the parts are urged into interengagement and are simultaneously caused to undergo relative vibrational movement in a direction substantially parallel with the splines on said other part.
Claim 5
Dependent Claim
18 words
A method as claimed in claim 1 or claim 2, wherein the metal parts are formed of copper.
Claim 6
Dependent Claim
24 words
A method as claimed in claim 1 or claim 2, wherein the insulative coating on the one part is formed of an epoxy resin.
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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |