US3750263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing an assembly by friction welding
Assignee: Caterpillar Inc
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Filing: 1971-06-01
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Granted: 1973-08-07
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Expires: 1991-06-01
Abstract
Abstract Cluster gear assemblies are produced by a method and apparatus which join a plurality of pre-machined gears by a common joining member. The plurality of gears are held in relative nonrotative relationship by special holding means which further establish precise angular and axial alignment between the gears and axial alignment between the joining member and the gears. Joining of the various members to produce the assembly is accomplished by friction welding.
Inventors
- 👤 R Satzler
- 👤 M Calton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:34
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/12; B23K20/129; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49464
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
168 words
A method of joining a plurality of members comprising the steps of: a. Locating a first joining member in a first workpiece holding means; b. Locating at least second and third premachined gear members in relative nonrotative relationship and precise axial alignment in a second workpiece holding means; c. Interlocking internal peripheral elements of the holding means with external peripheral gear teeth of the second and third gear members to maintain the second and third gear members in a fixed angular position with respect to each other; d. Each of said second an third gear members having an annular surface exposed for contact with a surface on the first member; e. Positioning one of said workpiece holding means relative to the other workpiece holding means such that said first member is located in a predetermined axial position and in juxtaposed relationship to said at least second and third members; and f. Friction welding said first member to said second and third members to form a cluster gear assembly.
Claim 2
Independent Claim
168 words
A method of joining a plurality of members comprising the steps of: a. Locating a first joining member in a first workpiece holding means; b. Locating at least second and third premachined gear members in relative nonrotative relationship and precise axial alignment in a second workpiece holding means; c. Interlocking internal peripheral elements of the holding means with external peripheral gear teeth of the second and third gear members to maintain the second and third gear members in a fixed angular position with respect to each other; d. Each of said second an third gear members having an annular surface exposed for contact with a surface on the first member; e. Positioning one of said workpiece holding means relative to the other workpiece holding means such that said first member is located in a predetermined axial position and in juxtaposed relationship to said at least second and third members; and f. Friction welding said first member to said second and third members to form a cluster gear assembly.
Claim 3
Dependent Claim
27 words
A method as set forth in claim 1 wherein the said second and third members are premachined helical gears and said assembly is a herringbone gear assembly.
Claim 4
Dependent Claim
30 words
A method as set forth in claim 1 wherein the said friction welding comprises at least two separate weld areas disposed in different planes and the welds are accomplished simultaneously.
Claim 5
Dependent Claim
31 words
A method as set forth in claim 3 wherein said friction welding is of the inertia type in which the energy necessary to accomplish the welding is stored in rotating flywheels.
Claim 6
Dependent Claim
68 words
A method as set forth in claim 1 wherein said first joining member and one of said second and third gear members have bores extending therethrough which are coaxially arranged to form an axial passage through the gear assembly, an annular bond being formed between said first joining member and said one of said second and third gear members adjacent the axial bore formed through the gear assembly.
References Cited (Backward Citations)
US3477115A
Cited
US3626779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |