Patent US3673659A successfully refreshed from Google Patents.
US3673659A
Expired / Lapsed
US
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Method for bonding vanes in torque converter
Assignee: Nissan Motor Co Ltd
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Filing: 1969-11-06
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Granted: 1972-07-04
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Expires: 1989-11-06
Abstract
Abstract A method for bonding vanes to the impeller or turbine of a torque converter wherein the vanes are pressed to have their inner and outer flanges extending in the same direction and its blade web warped or curved in cross section, spot-welded to the core structure, snapped into the shell structure complete with the core structure, and then heated together with flux material to have the joint connections welded together at a temperature higher than the melting point of the flux material.
Inventors
- 👤 Hirozi Ishii
- 👤 Koichi Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:03
CPC Classifications
F; F16; F16H; F16H41/00; F16H41/24; F16H41/28; B; B23; B23K; B23K1/00; B23K1/008; B23K1/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4933
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
141 words
A method of forming a rotor structure of a torque converter comprising the steps of pressing respectively from a single sheet of a slightly flexible material a vane having a blade web warped peripherally of the rotor structure inner and outer flanges extending in the same direction respectively from inner and outer ends of said blade web; snapping a plurality of the vanes into a space between the core and shell structures to provide an assembly of the vanes, core structure and shell structure; interposing brazing materials in the form of differently sized rings between said inner flanges and said core structure and between said outer flanges and shell structure, and heating said assembly in a suitable atmosphere up to a predetermined temperature higher than the melting point of said brazing materials and lower than the melting point of said assembly.
Claim 2
Independent Claim
141 words
A method of forming a rotor structure of a torque converter comprising the steps of pressing respectively from a single sheet of a slightly flexible material a vane having a blade web warped peripherally of the rotor structure inner and outer flanges extending in the same direction respectively from inner and outer ends of said blade web; snapping a plurality of the vanes into a space between the core and shell structures to provide an assembly of the vanes, core structure and shell structure; interposing brazing materials in the form of differently sized rings between said inner flanges and said core structure and between said outer flanges and shell structure, and heating said assembly in a suitable atmosphere up to a predetermined temperature higher than the melting point of said brazing materials and lower than the melting point of said assembly.
Claim 3
Dependent Claim
19 words
A method according to claim 1, further comprising the step of cooling down said assembly after said heating step.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |