Patent EP0079524A1 successfully refreshed from Google Patents.
US3777967A
Expired / Lapsed
US
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Friction welding apparatus
Assignee: Allwood Searle and Timney Ltd
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Filing: 1972-02-10
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Granted: 1973-12-11
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Expires: 1992-02-10
Abstract
Abstract In or for friction welding apparatus of the kind in which frictional heat is generated by causing one of the components to be welded to follow repeatedly a given path without rotation while in frictional engagement with the other component, the support for that component has a track, and there is a path inclined at less than 45* to that track, and there is a drive member caused by drive means to reciprocate along the track and path. This causes the component-support to reciprocate in a direction transverse to the track with an amplitude less than that of the drive member. There may be two or three such assemlies of track, path and drive member so arranged that the drive members operate at the same frequency and the path is circular or elliptical. The amplitude of the reciprocation of the drive members and/or the inclination of the paths may be capable of being reduced to zero to enable the components to be centred for welding to be effected.
Inventors
- 👤 J Searle
- 👤 D Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:27
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/06; B23; B23K; B23K20/00; B23K20/12; B23K20/1205; B29C66/00; B29C66/80; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/526; B29C66/90; B29C66/92; B29C66/924; B29C66/9261; B29C66/92651; B29C66/92653; B29C66/93; B29C66/934; B29C66/939
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
233 words
Friction welding apparatus operative to weld two components together comprising a first component-support and a second component-support, and drive means operative to cause said first component-support to follow repeatedly a given course of movement relative to the second component-support without rotation whereby components supported by the respective component-supports and in frictional engagement with each other become heated by frictional heat, said drive means comprising first guide means defining a path, a drive member, power means operative to cause reciprocation of the drive member along said path without reciprocation of said first guide means, second guide means defining a track and reciprocable in a direction transverse to said track, the track being inclined to said path at less than 45*, the drive member also being reciprocable along said track so that reciprocation of said drive member along said path and track with a given amplitude causes reciprocation of said second guide means relative to said first guide means in a direction transverse to said track and with an amplitude less than said given amplitude, the second guide means being connected to the first component support so that the first component support moves in synchronism with the second guide means, and reaction forces arising from the frictional contact between the components are transmitted through the first component-support, the second guide means and the drive member, all of which reciprocate, to the first, non-reciprocable, guide means.
Claim 2
Dependent Claim
233 words
Friction welding apparatus operative to weld two components together comprising a first component-support and a second component-support, and drive means operative to cause said first component-support to follow repeatedly a given course of movement relative to the second component-support without rotation whereby components supported by the respective component-supports and in frictional engagement with each other become heated by frictional heat, said drive means comprising first guide means defining a path, a drive member, power means operative to cause reciprocation of the drive member along said path without reciprocation of said first guide means, second guide means defining a track and reciprocable in a direction transverse to said track, the track being inclined to said path at less than 45*, the drive member also being reciprocable along said track so that reciprocation of said drive member along said path and track with a given amplitude causes reciprocation of said second guide means relative to said first guide means in a direction transverse to said track and with an amplitude less than said given amplitude, the second guide means being connected to the first component support so that the first component support moves in synchronism with the second guide means, and reaction forces arising from the frictional contact between the components are transmitted through the first component-support, the second guide means and the drive member, all of which reciprocate, to the first, non-reciprocable, guide means.
Claim 3
Dependent Claim
24 words
Friction welding apparatus according to claim 1 in which said first component-support is connected to said second guide means whereby they move in unison.
Claim 4
Dependent Claim
50 words
Friction welding apparatus according to claim 1 in which adjustment can be effected as between said first and second guide means whereby the inclination of the track relative to the path is adjustable to zero so that the amplitude of reciprocation of the first component-support can be varied to zero.
Claim 5
Dependent Claim
49 words
Friction welding apparatus according to claim 1 in which the power means includes a rotary driving crank and a crank shaft connected to the drive member, the throw of the crank being adjustable to zero whereby the amplitude of reciprocation of the drive member can be varied to zero.
Claim 6
Dependent Claim
30 words
Friction welding apparatus according to claim 1 in which there are at least two similar drive means operative to cause reciprocation of the first component-support in two mutually transverse directions.
Claim 7
Dependent Claim
26 words
Friction welding apparatus according to claim 5 in which the drive members are driven by a common power means whereby they reciprocate with the same frequency.
Claim 8
Dependent Claim
48 words
Friction welding apparatus according to claim 5 in which there are three similar drive means, two operative in parallel to cause reciprocation of the first component-support in one direction and the third operative to cause reciprocation of the first component-support in a direction transverse to said one direction.
Claim 9
Dependent Claim
50 words
Friction welding apparatus according to claim 1 in which there is counterweight means for the first component-support, and there is coupling means operative to couple the counterweight means to the first component-support in such a manner that movements of the first component-support are mirrored and balanced by the counterweight means.
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |