US3817121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronizing installation for change-speed transmissions
Assignee: Daimler Benz AG
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Filing: 1971-04-12
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Granted: 1974-06-18
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Expires: 1991-04-12
Abstract
Abstract A synchronization installation for shiftable change-speed transmissions, especially for motor vehicles, in which an electronic synchronization control unit adjustable by means of a preselector is provided that is equipped with rotational speedmeasuring devices for the transmission members to be shifted and with devices for increasing or decreasing the rotational speed of the transmission elements to be shifted, and which is connected with shifting clutches by way of shifting devices that are actuated in case of rotational speed equality.
Inventors
- 👤 Berner A Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:56
CPC Classifications
F; F16; F16H; F16H45/00; F16H45/02; B; B60; B60W; B60W30/00; B60W30/18; B60W30/1819; F16H3/00; F16H3/02; F16H3/08; F16H3/12; F16H59/00; F16H59/36; F16H59/46; B60K; B60K2702/00; B60K2702/08; B60K2702/10; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19149; Y10T74/19153
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
161 words
A synchronization installation for change-speed transmissions for an engine having a drive shaft comprising: a plurality of rotatable transmission elements in said transmission including an input shaft and an output shaft; an electronic synchronizing control means; a multi-position preselector means operatively connected to said synchronizing control means for controlling the operation thereof; shifting clutch means for selectively engaging and disengaging said transmission elements; servo-shifting means for operatively connecting said synchronizing control means with said shifting clutch means, said shifting clutch means being actuated by said servo-shifting means at substantial rotational speed equality of said rotatable transmission elements; said synchronizing control means including means for measuring the rotational speed of the drive shaft, said transmission input shaft, said transmission output shaft and adjustment means for increasing or decreasing the rotational speed of the engine including means for Adjusting the supply of fuel to the engine to increase or decrease the rotational speed of the engine and means for directly braking the engine.
Claim 2
Dependent Claim
161 words
A synchronization installation for change-speed transmissions for an engine having a drive shaft comprising: a plurality of rotatable transmission elements in said transmission including an input shaft and an output shaft; an electronic synchronizing control means; a multi-position preselector means operatively connected to said synchronizing control means for controlling the operation thereof; shifting clutch means for selectively engaging and disengaging said transmission elements; servo-shifting means for operatively connecting said synchronizing control means with said shifting clutch means, said shifting clutch means being actuated by said servo-shifting means at substantial rotational speed equality of said rotatable transmission elements; said synchronizing control means including means for measuring the rotational speed of the drive shaft, said transmission input shaft, said transmission output shaft and adjustment means for increasing or decreasing the rotational speed of the engine including means for Adjusting the supply of fuel to the engine to increase or decrease the rotational speed of the engine and means for directly braking the engine.
Claim 3
Dependent Claim
18 words
A synchronization installation according to claims 1, wherein said fuel supply adjusting means includes an electromagnetic adjusting mechanism.
Claim 4
Dependent Claim
20 words
A synchronization installation according to claim 1, wherein said means for directly braking the engine includes an electromagnetic adjusting mechanism.
Claim 5
Dependent Claim
45 words
A synchronization installation according to claim 1, wherein said shifting means includes a servo-slide valve means controlled by said synchronizing control means, shifting lever means for shifting said shifting clutch means, and servo-piston means operatively connecting said servo-slide valve means with said shifting lever means.
Claim 6
Dependent Claim
28 words
A synchronization installation according to claim 4, wherein said shifting lever means include check-back contact means for indicating the engaged position thereof connected with said synchronizing control means.
Claim 7
Dependent Claim
30 words
A synchronization installation according to claim 1, wherein said preselector means includes a shift lever provided with contact means for indicating the position thereof connected with said synchronizing control means.
Claim 8
Dependent Claim
55 words
A synchronization installation according to claim 6, wherein said shift lever is displaceable between a center position and at least one additional position and wherein said shift lever in said center position abuts a contact means disengaging in this position said shifting clutch means by way of said synchronizing control means and said adjustment means.
Claim 9
Dependent Claim
24 words
A synchronization installation according to claim 1, wherein a hydraulic torque converter is operatively connected in the input of the transmission as starting coupling.
Claim 10
Dependent Claim
39 words
A synchronization installation according to claim 8, including a transmission input shaft, wherein said hydraulic torque converter includes a turbine shaft and a rigid mechanical connecting means for connecting said turbine shaft and said transmission input shaft is provided.
Claim 11
Dependent Claim
29 words
A synchronization installing according to claim 8, including a transmission input shaft, wherein a shifting clutch means is arranged between said hydraulic torque converter and said transmission input shaft.
Claim 12
Dependent Claim
16 words
A synchronization installation according to claim 10, wherein said last-mentioned clutch means includes a locking clutch.
Claim 13
Dependent Claim
58 words
A synchronization installation according to claim 8, wherein said hydraulic torque converter includes a turbine shaft and a pump shaft, said turbine shaft and said pump shaft both include means for measuring rotational speed, said turbine shaft and said pump shaft are connected by connecting means actuatable by said synchronizing control means by way of said shifting means.
Claim 14
Dependent Claim
16 words
A synchronization installation according to claim 12, wherein said connecting means includes a shifting clutch means.
Claim 15
Dependent Claim
38 words
A synchronization installation according to claim 8, wherein said hydraulic torque converter includes a turbine shaft and a brake means actuable by said synchronizing control means by way of said servo-shifting means to selectively brake said turbine shaft.
Claim 16
Dependent Claim
16 words
A synchronization installation according to claim 14, wherein said last-mentioned brake means is a band brake.
Claim 17
Dependent Claim
25 words
A synchronization installation according to claim 14, wherein a rigid mechanical connecting means for connecting said turbine shaft and said transmission input shaft is provided.
Claim 18
Dependent Claim
24 words
A synchronization installation according to claim 14, wherein a shifting clutch means is arranged between said hydraulic torque converter and said transmission input shaft.
Claim 19
Dependent Claim
16 words
A synchronization installation according to claim 17, wherein said last-mentioned clutch means includes a locking clutch.
Claim 20
Dependent Claim
54 words
A synchronization installation according to claim 18, wherein said hydraulic torque converter includes a pump shaft, said pump shaft and said turbine shaft both include means for measuring rotational speed, said pump shaft and said turbine shaft are Connected by connecting means actuable by said synchronizing control means by way of said servo-shifting means.
Claim 21
Dependent Claim
16 words
A synchronization installation according to claim 19, wherein said connecting means includes a shifting clutch means.
Claim 22
Dependent Claim
18 words
A synchronization installation according to claim 20, wherein said fuel supply adjusting means includes an electromagnetic adjusting mechanism.
Claim 23
Dependent Claim
20 words
A synchronization installation according to claim 20, wherein said means for directly braking the engine includes an electromagnetic adjusting mechanism.
Claim 24
Dependent Claim
45 words
A synchronization installation according to claim 20, wherein said servo-shifting means includes a servo-slide valve means controlled by said synchronizing control means, shifting lever means for shifting said shifting clutch means, and servo-piston means operatively connecting said servo-slide valve means with said shifting lever means.
Claim 25
Dependent Claim
28 words
A synchronization installation according to claim 23, wherein said shifting lever means include check-back contact means for indicating the engaged position thereof connected with said synchronizing control means.
Claim 26
Dependent Claim
30 words
A synchronization installation according to claim 24, wherein said preselector means includes a shift lever provided with contact means for indicating the position thereof connected with said synchronizing control means.
Claim 27
Dependent Claim
56 words
A synchronization installation according to claim 25, wherein said shift lever is displaceable between a center position and at least one additional position and wherein said shift lever in said center position abuts a center contact means disengaging in this position said shifting clutch means by way of said synchronizing control means and said adjustment means.
Claim 28
Dependent Claim
15 words
A synchronization installation according to claim 26, wherein said adjustment means includes electromagnetic adjusting mechanisms.
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |