Patent US3840168A successfully refreshed from Google Patents.
US3840168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction welding apparatus
Assignee: Allwood Searle and Timney Holdings Ltd
•
Filing: 1972-10-27
•
Granted: 1974-10-08
•
Expires: 1992-10-27
Abstract
Abstract In a known type of friction welding apparatus one of the components to be welded is held stationary and the other is oscillated that is, reciprocated or repeatedly moved about a closed path without rotation which is referred to as ''''irrotational movement''''. The components are urged together by hydraulic or other pressure means while heat is generated frictionally and subsequently while welding is effected. A feature of the disclosure is the provision of at least one flexible element fast with the irrotationally moving part and fast with a non-oscillating frame, the element transmitting at least some of the reaction to force exerted by the pressure means. Another feature is the provision of at least one flexible and resilient element fast with the irrotationally moving part and fast with some other part such as a counterweight and tending to reduce the amplitude of irrotational movement. Another feature is the provision of a base which supports the remainder of the apparatus in such a manner that said reaction is not transmitted through the base irrotationally moving part being located relatively to the base by at least one element fast with said part and with the base.
Inventors
- 👤 J Searle
- 👤 D Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:43
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/005; B; B23; B23K; B23K20/00; B23K20/12; B23K20/1205; G01V; G01V15/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
224 words
Friction welding apparatus of the kind capable of welding a first component and a second component together and comprising frame means, irrotationally moving means movable in an irrotational manner relative to said frame means, a first component support for supporting said first component and constituting part of said irrotationally moviNg means, a second component support for supporting said second component and restrained against irrotational movement, drive means operative to cause said irrotationally moving means to perform said irrotational movement relatively to said frame means and to said second component support, pressure means operative to generate a force urging said component supports in an axial direction normal to said irrotational movement and such that in use components supported by said component supports are urged together, and reaction means for transmitting from the irrotationally moving means to said frame means the reaction to said force urging said components together, characterised in that the reaction means comprises at least one flexible element one end of which is fast with the frame means so as to be immovable relative to the frame means and the other end of which is fast with the irrotationally moving means so as to be immovable relative to the irrotationally moving means whereby said at least one flexible element is constrained to flex when the irrotationally moving means moves in an irrotational manner.
Claim 2
Dependent Claim
224 words
Friction welding apparatus of the kind capable of welding a first component and a second component together and comprising frame means, irrotationally moving means movable in an irrotational manner relative to said frame means, a first component support for supporting said first component and constituting part of said irrotationally moviNg means, a second component support for supporting said second component and restrained against irrotational movement, drive means operative to cause said irrotationally moving means to perform said irrotational movement relatively to said frame means and to said second component support, pressure means operative to generate a force urging said component supports in an axial direction normal to said irrotational movement and such that in use components supported by said component supports are urged together, and reaction means for transmitting from the irrotationally moving means to said frame means the reaction to said force urging said components together, characterised in that the reaction means comprises at least one flexible element one end of which is fast with the frame means so as to be immovable relative to the frame means and the other end of which is fast with the irrotationally moving means so as to be immovable relative to the irrotationally moving means whereby said at least one flexible element is constrained to flex when the irrotationally moving means moves in an irrotational manner.
Claim 3
Dependent Claim
64 words
Friction welding apparatus according to claim 1 in which the reaction means comprises at least two spaced, parallel elements each with one end fast with the first component support and the other end fast with the frame means, and both elements being disposed to one side of the place where in use the components abut each other and at different distances from that place.
Claim 4
Dependent Claim
51 words
Friction welding apparatus according to claim 2 in which said elements are of the same length and extend in the same direction from the first component support whereby in use one is in compression and the other is in tension, and on irrotational movement the first component support does not tilt.
Claim 5
Dependent Claim
218 words
Friction welding apparatus of the kind capable of welding a first component and a second component together and comprising frame means, irrotationally moving means movable in an irrotational manner relatively to said frame means, a first component support for supporting said first component and constituting part of said irrotationally moving means, a second component support for supporting said second component and restrained against irrotational movement, drive means operative to cause said irrotationally moving means to perform said irrotational movement relatively to said frame means and to said second component support, and pressure means operative to generate a force urging the said component supports in an axial direction normal to said irrotational movement and such that in use components supported by said component supports are urged together, characterised in that there is provided restraining means for at least partially counteracting the inertial forces generated by said irrotational movement, which restraining means comprises at least one flexible and resilient element one end of which is fast with the irrotationally moving means and the other end of which is fast with a part relative to which said one end performs irrotational movement when the apparatus is in use, the element being flexed resiliently when the apparatus is in use and exerting forces tending to reduce the amplitude of the irrotational movement.
Claim 6
Dependent Claim
218 words
Friction welding apparatus of the kind capable of welding a first component and a second component together and comprising frame means, irrotationally moving means movable in an irrotational manner relatively to said frame means, a first component support for supporting said first component and constituting part of said irrotationally moving means, a second component support for supporting said second component and restrained against irrotational movement, drive means operative to cause said irrotationally moving means to perform said irrotational movement relatively to said frame means and to said second component support, and pressure means operative to generate a force urging the said component supports in an axial direction normal to said irrotational movement and such that in use components supported by said component supports are urged together, characterised in that there is provided restraining means for at least partially counteracting the inertial forces generated by said irrotational movement, which restraining means comprises at least one flexible and resilient element one end of which is fast with the irrotationally moving means and the other end of which is fast with a part relative to which said one end performs irrotational movement when the apparatus is in use, the element being flexed resiliently when the apparatus is in use and exerting forces tending to reduce the amplitude of the irrotational movement.
Claim 7
Dependent Claim
63 words
Friction welding apparatus according to claim 4 in which the irrotationally moving means comprises the first component support, counterweight means and coupling means operative between the first component support and the counterweight means to constrain the counterweight means to mirror the irrotationally moving movement of the first component support, the restraining means being operative between the first component support and the counterweight means.
Claim 8
Dependent Claim
200 words
Friction welding apparatus of the kind capable of welding a first component and a second component together and comprising a base, irrotationally moving means movable in an irrotational manner relatively to said base, a first component support for supporting said first component and constituting part of said irrotationally Moving means, a second component support for supporting said second component and restrained against irrotational movement relative to said base, drive means operative to cause said irrotationally moving means to perform said irrotational movement relatively to said base and to said second component support, pressure means operative to generate a force urging said component supports in an axial direction normal to said irrotational movement and such that in use components supported by said component supports are urged together, and reaction means for transmitting the reaction to said force urging said component supports in an axial direction characterised in that said reaction means does not operate through the intermediary of of said base, and that said first component support is located relatively to said base by at least one flexible element one end of which is fast with said base and the other end of which is fast with said irrotationally moving means.
Claim 9
Dependent Claim
200 words
Friction welding apparatus of the kind capable of welding a first component and a second component together and comprising a base, irrotationally moving means movable in an irrotational manner relatively to said base, a first component support for supporting said first component and constituting part of said irrotationally Moving means, a second component support for supporting said second component and restrained against irrotational movement relative to said base, drive means operative to cause said irrotationally moving means to perform said irrotational movement relatively to said base and to said second component support, pressure means operative to generate a force urging said component supports in an axial direction normal to said irrotational movement and such that in use components supported by said component supports are urged together, and reaction means for transmitting the reaction to said force urging said component supports in an axial direction characterised in that said reaction means does not operate through the intermediary of of said base, and that said first component support is located relatively to said base by at least one flexible element one end of which is fast with said base and the other end of which is fast with said irrotationally moving 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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |