Patent US2945672A successfully refreshed from Google Patents.
Patent US3915033A successfully refreshed from Google Patents.
US3915033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three speed forward-reverse planetary transmission
Assignee: Motors Liquidation Co
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Filing: 1974-09-23
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Granted: 1975-10-28
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Expires: 1994-09-23
Abstract
Abstract A planetary transmission for an industrial type vehicle wherein three simple planetary gear sets, having equal size ring gears and substantially equal size sun gears, are interconnected and selectively operable to establish three speed ratios. The planetary gear sets provide two reduction working ratios with a close step therebetween and one high speed traveling ratio. A forward-reverse gear train permits equal forward and reverse ratios in the transmission such that working and traveling of the vehicle can be accomodated in both directions.
Inventors
- 👤 James C Polak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:08
CPC Classifications
F; F16; F16H; F16H37/00; F16H37/02; F16H37/04; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H47/00; F16H47/06; F16H47/08; F16H2037/049; F16H2200/00; F16H2200/003; F16H2200/0039; F16H2200/0082; F16H2200/0091; F16H2200/20; F16H2200/2002; F16H2200/201; F16H2200/2097
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
330 words
A planetary transmission for an industrial vehicle comprising in combination, an input shaft; an output shaft; a torque converter having an input member drivingly connected to said input shaft, and an output member; forward-reverse gear means for providing forward and reverse drive including a selectively engageable forward clutch and a selectively engageable reverse clutch each drivingly connected to said output member, a forward input gear drivingly connected to said forward clutch, a reverse input gear drivingly connected to said reverse clutch, and reversing gear means meshing with said reverse input gear; and planetary gearing means for providing three gear drives including a transmission input gear meshing with said forward input gear and said reversing gear means, a planetary gear input shaft drivingly connected with said transmission input gear, a first planetary gEar set having a sun gear drivingly connected to said planetary gear input shaft, a carrier drivingly connected to said output shaft, a ring gear, a plurality of pinion gears rotatably mounted on said carrier and meshing with said sun and ring gears, and a selectively operable brake operatively connected with said ring gear, a second planetary gear set having a sun gear drivingly connected to said planetary gear input shaft, a carrier drivingly connected to said ring gear of said first planetary gear set, a ring gear, a plurality of pinions rotatably mounted on the carrier and meshing with the sun and ring gears, and a selectively operable brake operatively connected to the ring gear, a third planetary gear set having a sun gear held stationary, a carrier drivingly connected to said planetary gear input shaft, a ring gear, a plurality of pinions rotatably mounted on the carrier and meshing with the sun and ring gear, and a selectively operable clutch means for providing a selectively operable drive connection between the ring gear of the third planetary gear set and said ring gear of said first planetary gear set through said carrier of said second planetary gear set.
Claim 2
Dependent Claim
330 words
A planetary transmission for an industrial vehicle comprising in combination, an input shaft; an output shaft; a torque converter having an input member drivingly connected to said input shaft, and an output member; forward-reverse gear means for providing forward and reverse drive including a selectively engageable forward clutch and a selectively engageable reverse clutch each drivingly connected to said output member, a forward input gear drivingly connected to said forward clutch, a reverse input gear drivingly connected to said reverse clutch, and reversing gear means meshing with said reverse input gear; and planetary gearing means for providing three gear drives including a transmission input gear meshing with said forward input gear and said reversing gear means, a planetary gear input shaft drivingly connected with said transmission input gear, a first planetary gEar set having a sun gear drivingly connected to said planetary gear input shaft, a carrier drivingly connected to said output shaft, a ring gear, a plurality of pinion gears rotatably mounted on said carrier and meshing with said sun and ring gears, and a selectively operable brake operatively connected with said ring gear, a second planetary gear set having a sun gear drivingly connected to said planetary gear input shaft, a carrier drivingly connected to said ring gear of said first planetary gear set, a ring gear, a plurality of pinions rotatably mounted on the carrier and meshing with the sun and ring gears, and a selectively operable brake operatively connected to the ring gear, a third planetary gear set having a sun gear held stationary, a carrier drivingly connected to said planetary gear input shaft, a ring gear, a plurality of pinions rotatably mounted on the carrier and meshing with the sun and ring gear, and a selectively operable clutch means for providing a selectively operable drive connection between the ring gear of the third planetary gear set and said ring gear of said first planetary gear set through said carrier of said second planetary gear set.
Claim 3
Dependent Claim
361 words
A planetary transmission for an industrial vehicle comprising in combination, an input shaft; an output shaft; a torque converter having an impeller member drivingly connected to said input shaft, and a turbine member; forward-reverse gear means for providing forward and reverse drive including a selectively engageable forward clutch and a selectively engageable reverse clutch each drivingly connected to said turbine member, a forward input gear drivingly connected to said forward clutch, a reverse input gear drivingly connected to said reverse clutch, and reverse gear means including first and second gears rotatably mounted parallel to said reverse input gear and said first gear meshing with said reverse input gear; and planetary gearing means disposed parallel to both said forward-reverse gear means and said reverse gear means for providing three gear drives, including an input gear meshing with said forward input gear and said second gear of said reverse gear means, a planetary gear input shaft drivingly connected with said input gear, a first planetary gear set having a sun gear drivingly connected to said planetary gear input shaft, a carrier drivingly connected to said output shaft, a ring gear, a plurality of pinion gears rotatably mounted on said carrier and meshing with said sun and ring gears, and a selectively operable brake operatively connected with said ring gear, a second planetary gear set having a sun gear drivingly connected to said planetary gear input shaft, a carrier drivingly connected to said ring gear of said first planetary gear set, a ring gear, a plurality of pinions rotatably mounted on the carrier and meshing with the sun and ring gears, and a selectively operable brake operatively connected to the ring gear, a third planetary gear set having a sun gear held stationary, a carrier drivingly connected to said planetary gear input shaft, a ring gear, and a plurality of pinions rotatably mounted on the carrier and meshing with the sun and ring gear, and a selectively operable clutch means for providing a drive connection between the ring gear of the third planetary gear set and said ring gear of said first planetary gear set through said carrier of said second planetary gear set.
Claim 4
Dependent Claim
361 words
A planetary transmission for an industrial vehicle comprising in combination, an input shaft; an output shaft; a torque converter having an impeller member drivingly connected to said input shaft, and a turbine member; forward-reverse gear means for providing forward and reverse drive including a selectively engageable forward clutch and a selectively engageable reverse clutch each drivingly connected to said turbine member, a forward input gear drivingly connected to said forward clutch, a reverse input gear drivingly connected to said reverse clutch, and reverse gear means including first and second gears rotatably mounted parallel to said reverse input gear and said first gear meshing with said reverse input gear; and planetary gearing means disposed parallel to both said forward-reverse gear means and said reverse gear means for providing three gear drives, including an input gear meshing with said forward input gear and said second gear of said reverse gear means, a planetary gear input shaft drivingly connected with said input gear, a first planetary gear set having a sun gear drivingly connected to said planetary gear input shaft, a carrier drivingly connected to said output shaft, a ring gear, a plurality of pinion gears rotatably mounted on said carrier and meshing with said sun and ring gears, and a selectively operable brake operatively connected with said ring gear, a second planetary gear set having a sun gear drivingly connected to said planetary gear input shaft, a carrier drivingly connected to said ring gear of said first planetary gear set, a ring gear, a plurality of pinions rotatably mounted on the carrier and meshing with the sun and ring gears, and a selectively operable brake operatively connected to the ring gear, a third planetary gear set having a sun gear held stationary, a carrier drivingly connected to said planetary gear input shaft, a ring gear, and a plurality of pinions rotatably mounted on the carrier and meshing with the sun and ring gear, and a selectively operable clutch means for providing a drive connection between the ring gear of the third planetary gear set and said ring gear of said first planetary gear set through said carrier of said second planetary gear set.
Claim 5
Dependent Claim
276 words
A planetary transmission for an industrial vehicle comprising in combination, an input shaft; an output shaft; a torque converter having an input member drivingly connected to said input shaft, and an output member; forward-reverse gear means for providing forward and reverse drive including a selectively engageable forward clutch and a selectively engageable reverse clutch each drivingly connected to said output member, a forward input gear drivingly connected to said forward clutch, a reverse input gear drivingly connected to said reverse clutch, and reversing gear means meshing with said rEverse input gear; and planetary gearing means for providing three gear drives including an input gear meshing with said forward input gear and said reversing gear means, a planetary gear input shaft drivingly connected with said input gear, first, second and third simple planetary gear sets each having a sun gear, a carrier member, a ring gear, and a plurality of pinion gears rotatably mounted on each of said carrier and meshing with said sun and ring gears, a first selectively operable brake operatively connected with the ring gear of said first planetary gear set, a second selectively operable brake operatively connected to the ring gear of said second planetary gear set, the sun gear of said third planetary gear set being held stationary, the sun gears of said first and second planetary gear sets and the carrier of said third planetary gear set each being drivingly connected and a selectively operable clutch means for providing a drive connection between the ring gear of the third planetary gear set and the ring gear of said first planetary gear set and the carrier of said second planetary gear set.
Claim 6
Dependent Claim
276 words
A planetary transmission for an industrial vehicle comprising in combination, an input shaft; an output shaft; a torque converter having an input member drivingly connected to said input shaft, and an output member; forward-reverse gear means for providing forward and reverse drive including a selectively engageable forward clutch and a selectively engageable reverse clutch each drivingly connected to said output member, a forward input gear drivingly connected to said forward clutch, a reverse input gear drivingly connected to said reverse clutch, and reversing gear means meshing with said rEverse input gear; and planetary gearing means for providing three gear drives including an input gear meshing with said forward input gear and said reversing gear means, a planetary gear input shaft drivingly connected with said input gear, first, second and third simple planetary gear sets each having a sun gear, a carrier member, a ring gear, and a plurality of pinion gears rotatably mounted on each of said carrier and meshing with said sun and ring gears, a first selectively operable brake operatively connected with the ring gear of said first planetary gear set, a second selectively operable brake operatively connected to the ring gear of said second planetary gear set, the sun gear of said third planetary gear set being held stationary, the sun gears of said first and second planetary gear sets and the carrier of said third planetary gear set each being drivingly connected and a selectively operable clutch means for providing a drive connection between the ring gear of the third planetary gear set and the ring gear of said first planetary gear set and the carrier of said second planetary gear set.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |