US4946429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission with a continuously variable speed range
Assignee: Motors Liquidation Co
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Filing: 1989-08-14
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Granted: 1990-08-07
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Expires: 2009-08-14
Abstract
Abstract A power transmission has a torque converter, a planetary gear arrangement and a variable ratio drive belt. The planetary gear arrangement is controlled to establish a low forward ratio and a reverse ratio. The variable ratio belt drive is controlled to provide a variable ratio high speed range. A torque converter is utilized during the low forward ratio and the reverse ratio and is selectively bypassed during the high speed range.
Inventors
- 👤 James F. Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:36
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/065; F16H37/00; F16H37/02; F16H37/021; F16H37/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A transmission comprising: input means for delivering power to the transmission; a planetary gear arrangement including a sun gear, a ring gear and a carrier assembly; first selectively engageable input clutch means for connecting said input means to said sun gear; output means for delivering power from the transmission; selectively engageable low clutch means for connecting said carrier assembly to said output shaft; selectively engageable low brake means for preventing rotation of said ring gear; reverse clutch means and reverse brake means for selectively connecting said ring gear to said output means and for selectively preventing rotation of said carrier assembly respectively for establishing a reverse ratio in said transmission; variable ratio pulley and belt means disposed for power transfer between said input means and said output means; and second selectively engageable input clutch means for connecting said input means to said variable ratio pulley and belt means for establishing a high forward variable ratio drive between said input means and said output means.
Claim 2
Dependent Claim
164 words
A transmission comprising: input means for delivering power to the transmission; a planetary gear arrangement including a sun gear, a ring gear and a carrier assembly; first selectively engageable input clutch means for connecting said input means to said sun gear; output means for delivering power from the transmission; selectively engageable low clutch means for connecting said carrier assembly to said output shaft; selectively engageable low brake means for preventing rotation of said ring gear; reverse clutch means and reverse brake means for selectively connecting said ring gear to said output means and for selectively preventing rotation of said carrier assembly respectively for establishing a reverse ratio in said transmission; variable ratio pulley and belt means disposed for power transfer between said input means and said output means; and second selectively engageable input clutch means for connecting said input means to said variable ratio pulley and belt means for establishing a high forward variable ratio drive between said input means and said output means.
References Cited (Backward Citations)
US4290320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |