Patent US3929211A successfully refreshed from Google Patents.
US3929211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power train including a torque-pressure transducer
Assignee: Motors Liquidation Co
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Filing: 1974-09-03
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Granted: 1975-12-30
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Expires: 1994-09-03
Abstract
Abstract An automatic transmission power train including an improved torque-pressure transducer incorporating dual concentric outer turbine and inner transducer shafts, secured together at their input ends, and having a regulating valve mounted in the center of their output ends, with the axial movement of the regulating valve being controlled by a plurality of spring-loaded, stacked rollers which are pyramided in two rows and have their ends extending through oppositely disposed relatively movable arcuate slots formed in the two shafts, with the height and, hence, the spread of the rollers being changed in response to the relative twists of the concentric shafts and the regulated transducer pressure thus produced being directed to a modulator valve assembly for transmittal to the conventional transmission shift valves and associated shifting clutch control valves.
Inventors
- 👤 Don G Maddock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:40
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08; F16H59/00; F16H59/14; F16H59/16; F16H59/36; F16H59/38; F16H2059/385; F16H59/46
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
171 words
A torque-pressure transducer for use with a power train including a torque converter, a clutch, a shift valve, a source of fluid under pressure, a mainshaft, and a hollow turbine shaft operatively connected between said torque converter and said clutch for driving said mainshaft when said clutch is engaged, said torque-pressure transducer comprising a transducer shaft mounted in said hollow turbine shaft and fixedly secured to oNe end thereof, a chamber formed in the free end of said transducer shaft, an inlet into said chamber for said fluid under pressure, a plurality of longitudinally stacked members extending transversely across said chamber and operatively connected between said turbine shaft and said transducer shaft so as to be axially spreadable in said chamber in proportion to the relative torque-responsive twist between said shafts, springbiased regulating valve means mounted in said chamber and responsive to movement of said axially spreadable stacked members for regulating said fluid under pressure, and conduitry means communicating said regulated fluid from said regulating valve means to said shift valve.
Claim 2
Dependent Claim
171 words
A torque-pressure transducer for use with a power train including a torque converter, a clutch, a shift valve, a source of fluid under pressure, a mainshaft, and a hollow turbine shaft operatively connected between said torque converter and said clutch for driving said mainshaft when said clutch is engaged, said torque-pressure transducer comprising a transducer shaft mounted in said hollow turbine shaft and fixedly secured to oNe end thereof, a chamber formed in the free end of said transducer shaft, an inlet into said chamber for said fluid under pressure, a plurality of longitudinally stacked members extending transversely across said chamber and operatively connected between said turbine shaft and said transducer shaft so as to be axially spreadable in said chamber in proportion to the relative torque-responsive twist between said shafts, springbiased regulating valve means mounted in said chamber and responsive to movement of said axially spreadable stacked members for regulating said fluid under pressure, and conduitry means communicating said regulated fluid from said regulating valve means to said shift valve.
Claim 3
Dependent Claim
172 words
A torque-pressure transducer for use with a power train including a torque converter, a clutch, a shift valve, a source of fluid under pressure, a mainshaft, and a hollow turbine shaft operatively connected between said torque converter and said clutch for driving said mainshaft when said clutch is engaged, said torque-pressure transducer comprising a transducer shaft mounted in said hollow turbine shaft and fixedly secured to one end thereof, a chamber formed in the free end of the said transducer shaft, an inlet into said chamber for said fluid under pressure, a plurality of longitudinally stacked rollers extending transversely across said chamber and operatively connected between said turbine shaft and said transducer shaft so as to be axially spreadable in said chamber in proportion to the relative torque-responsive twist between said shafts, spring-biased regulating valve means mounted in said chamber and responsive to movement of said axially spreadable stacked rollers for regulating said fluid under pressure, and conduitry means communicating said regulated fluid from said regulating valve means to said shift valve.
Claim 4
Dependent Claim
172 words
A torque-pressure transducer for use with a power train including a torque converter, a clutch, a shift valve, a source of fluid under pressure, a mainshaft, and a hollow turbine shaft operatively connected between said torque converter and said clutch for driving said mainshaft when said clutch is engaged, said torque-pressure transducer comprising a transducer shaft mounted in said hollow turbine shaft and fixedly secured to one end thereof, a chamber formed in the free end of the said transducer shaft, an inlet into said chamber for said fluid under pressure, a plurality of longitudinally stacked rollers extending transversely across said chamber and operatively connected between said turbine shaft and said transducer shaft so as to be axially spreadable in said chamber in proportion to the relative torque-responsive twist between said shafts, spring-biased regulating valve means mounted in said chamber and responsive to movement of said axially spreadable stacked rollers for regulating said fluid under pressure, and conduitry means communicating said regulated fluid from said regulating valve means to said shift valve.
Claim 5
Dependent Claim
194 words
A torque-pressure transducer for use with a power train including a torque converter, a clutch, a clutch pressure control system, a source of fluid under pressure, a mainshaft, and a hollow turbine shaft operatively connected between said torque converter and said clutch for driving said mainshaft when said clutch is engaged, said torque-pressure transducer comprising a transducer shaft mounted in said hollow turbine shaft and fixedly secured to one end thereof, a chamber formed in the free end of said transducer shaft, an inlet into said chamber for said fluid under pressure, a plurality of longitudinally stacked rollers extending transversely across said chamber and extending at the ends thereof through oppositely disposed, differently-sized openings formed in said turbine shaft and said transducer shaft so as to be axially spreadable in said chamber in proportion to the relative torque-responsive twist between said shafts, closed-loop regulating valve means mounted in said chamber and responsive via intermediate resilient means to movement of said axially spreadable stacked rollers for regulating said fluid under pressure, and conduitry means including closed-loop modulating valve means for communicating said regulated fluid from said regulating valve means to said clutch pressure control system.
Claim 6
Dependent Claim
194 words
A torque-pressure transducer for use with a power train including a torque converter, a clutch, a clutch pressure control system, a source of fluid under pressure, a mainshaft, and a hollow turbine shaft operatively connected between said torque converter and said clutch for driving said mainshaft when said clutch is engaged, said torque-pressure transducer comprising a transducer shaft mounted in said hollow turbine shaft and fixedly secured to one end thereof, a chamber formed in the free end of said transducer shaft, an inlet into said chamber for said fluid under pressure, a plurality of longitudinally stacked rollers extending transversely across said chamber and extending at the ends thereof through oppositely disposed, differently-sized openings formed in said turbine shaft and said transducer shaft so as to be axially spreadable in said chamber in proportion to the relative torque-responsive twist between said shafts, closed-loop regulating valve means mounted in said chamber and responsive via intermediate resilient means to movement of said axially spreadable stacked rollers for regulating said fluid under pressure, and conduitry means including closed-loop modulating valve means for communicating said regulated fluid from said regulating valve means to said clutch pressure control system.
Claim 7
Dependent Claim
259 words
A torque-pressure transducer for use with a power train including a torque converter, a clutch, a shift valve, a clutch pressure control system, a source of fluid under pressure, a mainshaft, and a hollow turbine shaft operatively connected between said torque converter and said clutch for driving said mainshaft when said clutch is engaged, said torque-pressure transducer comprising a transducer shaft mounted in said hollow turbine shaft and fixedly secured to one end thereof, a chamber formed in the free end of said transducer shaft, a passage for communicating said fluid under pressure from said source to said chamber, a plurality of rollers stacked so as to have three rollers in a first row and two rollers in a second row, each extending transversely across said chamber with the ends thereof extending through oppositely disposed, differently-sized opEnings formed in said turbine shaft and said transducer shaft so as to be axially spreadable in said chamber in proportion to the relative torque-responsive twist between said shafts, closed-loop regulating valve means mounted in said chamber, resilient means mounted between the end roller of said first row of rollers and said closed-loop regulating valve means, said regulating valve means being responsive through said resilient means to movement of said axially spreadable stacked rollers for regulating said fluid under pressure, closed-loop modulator valve means, first conduitry means communicating regulated fluid from said regulating valve means to said modulator valve means, and second conduitry means communicating modulated fluid from said modulator valve means to said shift valve and to said clutch pressure control system.
Claim 8
Dependent Claim
259 words
A torque-pressure transducer for use with a power train including a torque converter, a clutch, a shift valve, a clutch pressure control system, a source of fluid under pressure, a mainshaft, and a hollow turbine shaft operatively connected between said torque converter and said clutch for driving said mainshaft when said clutch is engaged, said torque-pressure transducer comprising a transducer shaft mounted in said hollow turbine shaft and fixedly secured to one end thereof, a chamber formed in the free end of said transducer shaft, a passage for communicating said fluid under pressure from said source to said chamber, a plurality of rollers stacked so as to have three rollers in a first row and two rollers in a second row, each extending transversely across said chamber with the ends thereof extending through oppositely disposed, differently-sized opEnings formed in said turbine shaft and said transducer shaft so as to be axially spreadable in said chamber in proportion to the relative torque-responsive twist between said shafts, closed-loop regulating valve means mounted in said chamber, resilient means mounted between the end roller of said first row of rollers and said closed-loop regulating valve means, said regulating valve means being responsive through said resilient means to movement of said axially spreadable stacked rollers for regulating said fluid under pressure, closed-loop modulator valve means, first conduitry means communicating regulated fluid from said regulating valve means to said modulator valve means, and second conduitry means communicating modulated fluid from said modulator valve means to said shift valve and to said clutch pressure control system.
Claim 9
Dependent Claim
344 words
A torque-pressure transducer for use with a power train including a torque converter, a clutch, a shift valve, a clutch pressure control system, a source of fluid under pressure, a mainshaft, and a hollow turbine shaft operatively connected between said torque converter and said clutch for driving said mainshaft when said clutch is engaged, said torque-pressure transducer comprising a transducer shaft mounted in said hollow turbine shaft and fixedly secured to one end thereof, a chamber formed in the free end of said transducer shaft, a passage for communicating said fluid under pressure from said source to said chamber, a pair of oppositely disposed openings formed in the wall of said transducer shaft, a pair of larger oppositely disposed openings formed in the wall of said turbine shaft, a plurality of rollers stacked so as to have three rollers in a first row and two rollers in a second row, each extending transversely across said chamber with the ends thereof extending through said openings formed in said turbine shaft and said transducer shaft so as to be axially spreadable in said chamber in proportion to the relative torque-responsive twist between said shafts as transmitted to said rollers by the edges of said relatively moving turbine and transducer shaft openings, a closed-loop regulating valve mounted in said chamber, a spring retainer mounted in said chamber adjacent the end roller of said first row of rollers, a ground spring mounted between said spring retainer and a shoulder formed in said transducer shaft, a valve spring mounted between said spring retainer and an end of said closed-loop regulating valve, said regulating valve being responsive through said valve spring to movement of said axially spreadable stacked rollers for regulating said fluid under pressure, an external closed-loop modulator valve, first conduitry means communicating regulated fluid from said regulating valve to said modulator valve, second conduitry means communicating modulated fluid from said modulator valve to said shift valve, and third conduitry means communicating fluid from said shift valve and from said second conduitry means to said clutch pressure control system.
Claim 10
Dependent Claim
344 words
A torque-pressure transducer for use with a power train including a torque converter, a clutch, a shift valve, a clutch pressure control system, a source of fluid under pressure, a mainshaft, and a hollow turbine shaft operatively connected between said torque converter and said clutch for driving said mainshaft when said clutch is engaged, said torque-pressure transducer comprising a transducer shaft mounted in said hollow turbine shaft and fixedly secured to one end thereof, a chamber formed in the free end of said transducer shaft, a passage for communicating said fluid under pressure from said source to said chamber, a pair of oppositely disposed openings formed in the wall of said transducer shaft, a pair of larger oppositely disposed openings formed in the wall of said turbine shaft, a plurality of rollers stacked so as to have three rollers in a first row and two rollers in a second row, each extending transversely across said chamber with the ends thereof extending through said openings formed in said turbine shaft and said transducer shaft so as to be axially spreadable in said chamber in proportion to the relative torque-responsive twist between said shafts as transmitted to said rollers by the edges of said relatively moving turbine and transducer shaft openings, a closed-loop regulating valve mounted in said chamber, a spring retainer mounted in said chamber adjacent the end roller of said first row of rollers, a ground spring mounted between said spring retainer and a shoulder formed in said transducer shaft, a valve spring mounted between said spring retainer and an end of said closed-loop regulating valve, said regulating valve being responsive through said valve spring to movement of said axially spreadable stacked rollers for regulating said fluid under pressure, an external closed-loop modulator valve, first conduitry means communicating regulated fluid from said regulating valve to said modulator valve, second conduitry means communicating modulated fluid from said modulator valve to said shift valve, and third conduitry means communicating fluid from said shift valve and from said second conduitry means to said clutch pressure control system.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |