US5560249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power synchronizer for a compound transmission
Assignee: Eaton Corp
•
Filing: 1995-03-29
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Granted: 1996-10-01
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Expires: 2015-03-29
Abstract
Abstract An apparatus for controlling the rotational speed of an input shaft of a motor vehicle transmission such as a compound heavy duty transmission to achieve synchronous during a ratio change includes a variable speed motor having a motor shaft operably engaged with an input shaft of the transmission, preferably through an intermediate gear and a countershaft gear. The motor may be an electric, hydraulic, or pneumatic motor, having a speed variable between zero and a maximum so that the input shaft speed can be decreased during upshifts, or increased during downshifts. In an alternative embodiment, the motor is operably engaged with the input shaft and with the output shaft.
Inventors
- 👤 Richard A. Nellums
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:43
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/12; F02; F02B; F02B1/00; F02B1/02; F02B1/04; F16H61/00; F16H61/04; F16H61/0403; F16H2061/0422; F16H3/126; F16H61/70; F16H63/00; F16H63/40; F16H63/50; F16H63/502; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19284
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
100 words
An apparatus for controlling rotational speed of an input shaft of a mechanical change gear transmission, the transmission including a mainshaft having a plurality of ratio gears selectively engageable thereto and at least one countershaft having at least one countershaft gear fixed for rotation therewith, the apparatus comprising: a variable speed motor having a motor shaft a motor gear rotatably fixed to the motor shaft; and an intermediate gear in constant meshing engagement with the at least one countershaft gear and the motor gear, wherein the variable speed motor is operated to selectively alter rotational speed of the input shaft.
Claim 2
Independent Claim
100 words
An apparatus for controlling rotational speed of an input shaft of a mechanical change gear transmission, the transmission including a mainshaft having a plurality of ratio gears selectively engageable thereto and at least one countershaft having at least one countershaft gear fixed for rotation therewith, the apparatus comprising: a variable speed motor having a motor shaft a motor gear rotatably fixed to the motor shaft; and an intermediate gear in constant meshing engagement with the at least one countershaft gear and the motor gear, wherein the variable speed motor is operated to selectively alter rotational speed of the input shaft.
Claim 3
Dependent Claim
37 words
The apparatus of claim 1 wherein the motor gear and the at least one countershaft gear are coupled through the intermediate gear to effect a ratio of countershaft gear speed to motor gear speed of about 1:3.33.
Claim 4
Dependent Claim
19 words
The apparatus of claim 2 wherein speed of the motor is variable between zero and a predetermined maximum value.
Claim 5
Dependent Claim
12 words
The apparatus of claim 2 wherein the motor comprises an electric motor.
Claim 6
Dependent Claim
13 words
The apparatus of claim 4 wherein the motor comprises a brushless electric motor.
Claim 7
Dependent Claim
12 words
The apparatus of claim 1 wherein the motor comprises a hydraulic motor.
Claim 8
Dependent Claim
12 words
The apparatus of claim 1 wherein the motor comprises a pneumatic motor.
Claim 9
Dependent Claim
20 words
The apparatus of claim 1 wherein the transmission comprises a compound transmission having a main section and an auxiliary section.
Claim 10
Independent Claim
81 words
An apparatus for controlling rotational speed of an input shaft of a motor vehicle transmission, the transmission including a mainshaft having a plurality of ratio gears selectively engageable thereto and at least one countershaft operable to couple the input shaft to an output shaft, the apparatus comprising: a variable speed motor operably engaged with the input shaft and with the output shaft to selectively increase or decrease rotational speed of the input shaft relative to rotational speed of the output shaft.
Claim 11
Independent Claim
81 words
An apparatus for controlling rotational speed of an input shaft of a motor vehicle transmission, the transmission including a mainshaft having a plurality of ratio gears selectively engageable thereto and at least one countershaft operable to couple the input shaft to an output shaft, the apparatus comprising: a variable speed motor operably engaged with the input shaft and with the output shaft to selectively increase or decrease rotational speed of the input shaft relative to rotational speed of the output shaft.
Claim 12
Dependent Claim
44 words
The apparatus of claim 9 further comprising an input gear mounted on the input shaft, and a countershaft gear mounted on the at least one countershaft and engaged with the input gear, the motor having a motor shaft operably engaged with the countershaft gear.
Claim 13
Dependent Claim
21 words
The apparatus of claim 10 wherein the motor shaft is operably engaged with the countershaft gear through a first intermediate gear.
Claim 14
Dependent Claim
24 words
The apparatus of claim 9 further comprising an output gear mounted on the output shaft, the motor being operably engaged with the output gear.
Claim 15
Dependent Claim
20 words
The apparatus of claim 12 wherein the motor is operably engaged with the output gear through a second intermediate gear.
Claim 16
Dependent Claim
12 words
The apparatus of claim 9 wherein the motor comprises an electric motor.
Claim 17
Dependent Claim
13 words
The apparatus of claim 14 wherein the motor comprises a brushless electric motor.
Claim 18
Dependent Claim
12 words
The apparatus of claim 9 wherein the motor comprises a hydraulic motor.
Claim 19
Dependent Claim
12 words
The apparatus of claim 9 wherein the motor comprises a pneumatic motor.
Claim 20
Dependent Claim
183 words
A compound transmission including a main section connected in series with an auxiliary section, the transmission comprising: an input shaft having an input gear mounted thereon; a mainshaft having a plurality of ratio gears selectively engageable thereto; at least one main countershaft having a main countershaft gear mounted thereon and engaged with the input gear; a power synchronizer gear mounted on the at least one main countershaft; an auxiliary section including at least one auxiliary countershaft, selectively coupleable to the mainshaft, and at least one auxiliary countershaft gear; a variable speed electric motor having first and second motor shafts; first and second motor gears mounted on the first and second motor shafts, respectively; a first intermediate gear in constant meshing engagement with the first motor gear and the power synchronizer gear; and a second intermediate gear in constant meshing engagement with the second motor gear and the at least one auxiliary countershaft gear wherein the variable speed electric motor is operable to selectively alter the rotational speed of the input shaft relative to the output shaft to effect synchronous during a ratio change.
Claim 21
Dependent Claim
183 words
A compound transmission including a main section connected in series with an auxiliary section, the transmission comprising: an input shaft having an input gear mounted thereon; a mainshaft having a plurality of ratio gears selectively engageable thereto; at least one main countershaft having a main countershaft gear mounted thereon and engaged with the input gear; a power synchronizer gear mounted on the at least one main countershaft; an auxiliary section including at least one auxiliary countershaft, selectively coupleable to the mainshaft, and at least one auxiliary countershaft gear; a variable speed electric motor having first and second motor shafts; first and second motor gears mounted on the first and second motor shafts, respectively; a first intermediate gear in constant meshing engagement with the first motor gear and the power synchronizer gear; and a second intermediate gear in constant meshing engagement with the second motor gear and the at least one auxiliary countershaft gear wherein the variable speed electric motor is operable to selectively alter the rotational speed of the input shaft relative to the output shaft to effect synchronous during a ratio change.
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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) | 1999-10-01 | 2000-04-01 | 2000-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-01 | 2004-04-01 | 2004-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-01 | 2008-04-01 | 2008-10-01 | $7700.00 | Window Closed / Lapsed |