US3747196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic transmission revision and method
Assignee: Individual
•
Filing: 1971-08-25
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Granted: 1973-07-24
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Expires: 1991-08-25
Abstract
Abstract An automotive automatic transmission revised structure wherein the outer sprag race of the transmission is positively secured to the rear transmission bell, to correct for prior inadvertent stripping or wearing down of engagement splines proximate this transmission area. The subject revision requires minimal expense and obviates the necessity of replacement of expensive parts.
Inventors
- 👤 P Whittington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:49
CPC Classifications
F; F16; F16D; F16D41/00; F16D41/06; F16D41/064; F16D41/066; F16B; F16B2200/00; F16B2200/63; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49638; Y10T29/49718; Y10T29/49732; Y10T29/49734; Y10T29/49735; Y10T29/49826; Y10T29/49947; Y10T29/49963; Y10T74/00; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
For an automotive automatic transmission having a rear bell housing having threaded apertures, an outer sprag race, a shaft support flange, frangible bolt means bolting said shaft support flange to said bell housing, said outer sprag race having a set of peripheral outer splines, said bell housing having a set of inner splines engaging said outer splines; an improved method of transmission rework when at least one of said spline sets becomes worn, comprising the steps of: removing said bolt means; drilling out the threads of said bell housing apertures, drilling and tapping apertures in said outer sprag race in correspondence with said drilled out apertures, and bolting said shaft support flange through said bell housing apertures to said outer sprag race at the so drilled and tapped apertures thereof, said method including the additional step of providing apertures in said retainer aligned with said tapped apertures of said outer sprag race, and passing said frangible bolts through said retainer apertures to thead into the drilled and tapped apertures of said outer sprag race.
Claim 2
Dependent Claim
174 words
For an automotive automatic transmission having a rear bell housing having threaded apertures, an outer sprag race, a shaft support flange, frangible bolt means bolting said shaft support flange to said bell housing, said outer sprag race having a set of peripheral outer splines, said bell housing having a set of inner splines engaging said outer splines; an improved method of transmission rework when at least one of said spline sets becomes worn, comprising the steps of: removing said bolt means; drilling out the threads of said bell housing apertures, drilling and tapping apertures in said outer sprag race in correspondence with said drilled out apertures, and bolting said shaft support flange through said bell housing apertures to said outer sprag race at the so drilled and tapped apertures thereof, said method including the additional step of providing apertures in said retainer aligned with said tapped apertures of said outer sprag race, and passing said frangible bolts through said retainer apertures to thead into the drilled and tapped apertures of said outer sprag race.
References Cited (Backward Citations)
GB381403A
Cited
US1982915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |