US6209406B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothed gear transmission having two partial transmissions disposed parallel to each other in the power flow
Assignee: Intellectual Ventures II LLC
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Filing: 1999-12-27
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Granted: 2001-04-03
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Expires: 2019-12-27
Abstract
Abstract The invention is based on a toothed gear transmission in which an input shaft is connected to an output shaft by a first and a second partial transmission, which are disposed parallel to each other in the power flow and which both have a frictionally engaged load shifting clutch and an intermediate shaft, in which each of the intermediate shafts can be effectively connected to the input shaft through the load shifting clutch, and with at least one first transmission constant. It is proposed that for starting, the first load shifting clutch can be placed in effective connection with the output shaft through a transmission constant and the second load shifting clutch can be placed in effective connection with the output shaft through a transmission constant, each at a gear ratio of the lowest gear speed.
Inventors
- 👤 Ralf Sperber
- 👤 Ernst Tscheplak
- 👤 Günter Wörner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:22
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/087; F16H3/093; F16H3/097; F16D; F16D48/00; F16D48/06; F16D48/08; F16H3/006; F16H61/00; F16H61/68; F16H61/684; F16H61/688; F16D2500/00; F16D2500/10; F16D2500/104; F16D2500/10406; F16D2500/10412; F16D2500/10443; F16D2500/1045; F16D2500/30; F16D2500/304; F16D2500/30404; F16D2500/31; F16D2500/3107; F16D2500/50; F16D2500/502; F16D2500/50296; F16D2500/70; F16D2500/704; F16D2500/70402; F16D2500/70404; F16D2500/70408; F16H2003/0933; F16H61/02; F16H61/0202; F16H61/0204; F16H61/0213; F16H2061/023; F16H2200/00; F16H2200/003; F16H2200/0052; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19228
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
134 words
A toothed gear transmission comprising an input shaft connected to an output shaft by a first and a second partial transmission, said partial transmissions disposed parallel to each other in the power flow and both having one frictionally engaged load shifting clutch and one intermediate shaft, each intermediate shaft adapted to be effectively connected through its load shifting clutch to the input shaft, and having at least one first transmission constant, wherein the first load shifting clutch is adapted to be placed in effective connection with the output shaft through the at least one first transmission constant and the second load shifting clutch is adapted to be placed in effective connection with the output shaft through the at least one transmission constant, each at a gear ratio of a lowest gear speed for starting.
Claim 2
Dependent Claim
134 words
A toothed gear transmission comprising an input shaft connected to an output shaft by a first and a second partial transmission, said partial transmissions disposed parallel to each other in the power flow and both having one frictionally engaged load shifting clutch and one intermediate shaft, each intermediate shaft adapted to be effectively connected through its load shifting clutch to the input shaft, and having at least one first transmission constant, wherein the first load shifting clutch is adapted to be placed in effective connection with the output shaft through the at least one first transmission constant and the second load shifting clutch is adapted to be placed in effective connection with the output shaft through the at least one transmission constant, each at a gear ratio of a lowest gear speed for starting.
Claim 3
Dependent Claim
41 words
A toothed gear transmission in accordance with claim 1 , wherein the first and the second load shifting clutches are adapted to be simultaneously placed in effective connection with the output shaft at the gear ratio of the lowest gear speed.
Claim 4
Dependent Claim
40 words
A toothed gear transmission in accordance with claim 1 , wherein the at least one transmission constant allocated to the lowest gear speed is adapted to be placed in effective connection with the first and the second load shifting clutches.
Claim 5
Dependent Claim
43 words
A toothed gear transmission in accordance with claim 3 , wherein both load shifting clutches are adapted to be placed in effective connection with the output shaft through the at least one transmission constant and through a toothed gear pair used for starting.
Claim 6
Dependent Claim
67 words
A toothed gear transmission in accordance with claim 1 , wherein the first load shifting clutch is adapted to be placed in effective connection with the output shaft through a second transmission constant, and the second load shifting clutch is adapted to be placed in effective connection with the output shaft through the second transmission constant to start at a gear ratio of a second-lowest gear speed.
Claim 7
Dependent Claim
41 words
A toothed gear transmission in accordance with claim 1 , wherein the first and the second load shifting clutches are adapted to be placed in effective connection with the output shaft simultaneously at the gear ratio of a second-lowest gear speed.
Claim 8
Dependent Claim
79 words
A toothed gear transmission in accordance with claim 6 , wherein a toothed gear of the at least one first transmission constant is disposed on the first intermediate shaft, and a toothed gear of at least one second transmission constant is disposed on the second intermediate shaft, and the first intermediate shaft is adapted to be placed in effective connection with the output shaft through a shifting component disposed between the toothed gears and through the second transmission constant.
Claim 9
Dependent Claim
27 words
A toothed gear transmission in accordance with claim 1 , wherein a toothed gear pair is allocated to the lowest gear speed and a second-lowest gear speed.
Claim 10
Dependent Claim
99 words
A toothed gear transmission in accordance with claim 1 , wherein the intermediate shaft of the first partial transmission is adapted to be placed in effective connection through the at least one first transmission constant with a second countershaft which is parallel to the input shaft and which is adapted to be effectively connected to the output shaft through at least one toothed gear pair allocated to the first partial transmission, and wherein the at least one first transmission constant is adapted to optionally be placed in effective connection with the first, the second, or both load shifting clutches.
Claim 11
Dependent Claim
41 words
A toothed gear transmission in accordance with claim 9 , wherein the output shaft is adapted to be connected to the intermediate shaft of the first partial transmission by an engageable and disengageable shifting component to form a direct gear speed.
Claim 12
Dependent Claim
70 words
A toothed gear transmission in accordance with claim 1 , wherein, in addition to the at least one first transmission constant on the first intermediate shaft, at least one second transmission constant, different from the first transmission constant, is disposed on the second intermediate shaft, and at least one of said transmission constants is adapted to be placed in effective connection with the output shaft through a plurality of countershafts.
Claim 13
Dependent Claim
29 words
A toothed gear transmission in accordance with claim 11 , further comprising a plurality of toothed gear pairs adapted to be placed in effective connection with each transmission constant.
Claim 14
Dependent Claim
106 words
A toothed gear transmission in accordance with claim 1 , further comprising three toothed gear pairs for six different forward gear speeds and one toothed gear pair for at least one reverse gear speed, wherein a first toothed gear of first toothed gear pair is allocated to the fourth and sixth gear speeds and is disposed on a second countershaft, and a second toothed gear of a second toothed gear pair is allocated to the third and fourth gear speeds, and a third toothed gear of a third toothed gear pair is allocated to the first and second gear speeds and disposed on the first countershaft.
Claim 15
Dependent Claim
36 words
A process for shifting a toothed gear transmission, wherein, as a function of at least one operating parameter, a first, a second, or both the first and second load shifting clutches together are used for starting.
Claim 16
Dependent Claim
36 words
A process for shifting a toothed gear transmission, wherein, as a function of at least one operating parameter, a first, a second, or both the first and second load shifting clutches together are used for starting.
Claim 17
Dependent Claim
56 words
A process in accordance with claim 14 , wherein the difference in rotational speed at at least one load shifting clutch and the power to be transferred are recorded, and the load shifting clutches are used individually or together to start as a function of the difference in rotational speed and the power to be transferred.
Claim 18
Dependent Claim
54 words
A process in accordance with claim 14 , wherein a weight of the motor vehicle containing the toothed gear transmission, including cargo, and/or the slope of a route driven by the vehicle are recorded and, as a function of the weight and/or slope, the load shifting clutches are used individually or together for starting.
Claim 19
Dependent Claim
38 words
A process in accordance with claim 14 , wherein a temperature at at least one load shifting clutch is recorded and, as a function of the temperature, the load shifting clutches are used individually or together for starting.
Claim 20
Dependent Claim
37 words
A process in accordance with claim 14 , wherein wear on at least one load shifting clutch is recorded and, as a function of the wear, the load shifting clutches are used individually or together for starting.
Claim 21
Dependent Claim
30 words
A process in accordance with claim 18 , wherein the load shifting clutches are used for starting in such a way that both load shifting clutches experience substantially equal wear.
Claim 22
Dependent Claim
31 words
A process in accordance with claim 19 , wherein from the point when a certain amount of wear is reached, only one of the two load shifting clutches is still used.
Claim 23
Dependent Claim
28 words
A process in accordance with claim 14 , wherein in case of failure of one load shifting clutch the other load shifting clutch can be used for starting.
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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) | 2004-04-02 | 2004-10-02 | 2005-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-04-02 | 2008-10-02 | 2009-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-04-02 | 2012-10-02 | 2013-04-03 | $7700.00 | Window Closed / Lapsed |