Patent US3659618A successfully refreshed from Google Patents.
US3659618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for limiting the loading of branched drives
Assignee: Robert Bosch GmbH
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Filing: 1969-10-29
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Granted: 1972-05-02
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Expires: 1989-10-29
Abstract
Abstract A control system for the main drive and auxiliary drives of a combine in which the main drive propels the vehicle, and the auxiliary drive operates a threshing drum and its conveyor. An engine drives the threshing drum directly, and the conveyor through a coupling, and also drives the pump of a hydrostatic transmission whose hydraulic motor propels the vehicle. A transducer pump, driven from the engine, and a throttle provide hydraulic signals controlling a valve to effect regulation of the transmission pump of the main drive, and to disengage the coupling to reduce the load on the engine. Setting means are provided for limiting the drive torque of the engine to a selected desired value, causing speed reduction and actuation of the control valve.
Inventors
- 👤 Walter Kobald
- 👤 Paul Bosch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:34
CPC Classifications
B; B60; B60W; B60W10/00; B60W10/30; A; A01; A01D; A01D41/00; A01D41/12; A01D41/127; A01D41/1274; A01D69/00; A01D69/03; B60W10/02; B60W10/04; B60W10/06; B60W10/10; B60W10/101; B60W10/103; F; F16; F16H; F16H37/00; F16H61/00; F16H61/38; F16H61/40; F16H61/46; F16H61/47; F16H2700/00; F16H2700/02; Y; Y10; Y10S; Y10S56/00; Y10S56/15
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
175 words
A control system for a driving arrangement, comprising, in combination, a source of driving power; main drive means; transmission means connecting said source of driving power with said main drive means, and including a regulatable adjusting pump means driven from said source of driving power; setting means for limiting the drive torque of said source of power to a desirable selected maximum torque; auxiliary drive means including coupling means having an engaged position for connecting said auxiliary drive means with said source of power, and a disengaged position; transducer means coupled with said adjusting pump means and having output means generating control signals inversely related to the load on said source of driving power; and control valve means operated by said control signals, and operatively connected with said adjusting pump means for adjusting the same, and thereby said main drive means, and also operatively connected with said coupling means for moving the same to said disengaged position so that the load applied by said auxiliary drive means to said source of driving power is limited.
Claim 2
Dependent Claim
175 words
A control system for a driving arrangement, comprising, in combination, a source of driving power; main drive means; transmission means connecting said source of driving power with said main drive means, and including a regulatable adjusting pump means driven from said source of driving power; setting means for limiting the drive torque of said source of power to a desirable selected maximum torque; auxiliary drive means including coupling means having an engaged position for connecting said auxiliary drive means with said source of power, and a disengaged position; transducer means coupled with said adjusting pump means and having output means generating control signals inversely related to the load on said source of driving power; and control valve means operated by said control signals, and operatively connected with said adjusting pump means for adjusting the same, and thereby said main drive means, and also operatively connected with said coupling means for moving the same to said disengaged position so that the load applied by said auxiliary drive means to said source of driving power is limited.
Claim 3
Dependent Claim
77 words
The control system as defined in claim 1 including a fluid line, said transducer means being a hydraulic pump mechanically coupled to said adjusting pump means and having the pressure side of said hydraulic pump connected to said fluid line; throttle means in said fluid line; pressure retaining valve means in said fluid line and connected in series with said throttle means; and fluid reservoir means; and fluid reservoir means connected to said pressure retaining value means.
Claim 4
Dependent Claim
77 words
The control system as defined in claim 2 including control slide in said valve means; spring means acting on said control slide on one side thereof; second fluid line means communicating with said side of said control slide acted on by said spring means and said first fluid line downstream of said throttle means; and third fluid line means connecting the other side of said control slide with said first fluid line upstream of said throttle means.
Claim 5
Dependent Claim
55 words
The control system as defined in claim 3 wherein a first port of said valve means is connected with a second port of said valve means leading to said coupling means when the pressure difference across said throttle means displaces said control slide against the force of said spring means into a predetermined reset position.
Claim 6
Dependent Claim
49 words
The control system as defined in claim 4 including a positioning cylinder on said adjusting pump means, said valve means having a third port communicating with said positioning cylinder and being connected to a fourth port of said valve means when said control slide is in said reset position.
Claim 7
Dependent Claim
76 words
The control system as defined in claim 5 including return flow means communicating with said valve means and said coupling means when said control slide is in an end position spaced from said reset position, the connection between said first and second port being closed when said control slide is displaced from said reset position, and the connection between said third and fourth port being opened when said control slide is displaced from said reset position.
Claim 8
Dependent Claim
50 words
The control system as defined in claim 6 including fourth fluid line means between said third port and said positioning cylinders; and throttle means communicating with said fourth fluid line means and said fluid reservoir means, said fourth fluid line means discharging into said reservoir means through said throttle means.
Claim 9
Dependent Claim
48 words
The control system as defined in claim 3 including throttle means in said second fluid line means between said first fluid line means and said one side of said control slide acted upon by said spring means; and check valve means connected in parallel with said throttle means.
Claim 10
Dependent Claim
74 words
The control system as defined in claim 3 including first check valve means connected to the inlet of said adjusting pump means; second check valve means connected to the outlet of said adjusting pump means; and means for connecting said first fluid line means to said first and second check vale means, whereby said first fluid line means communicates with the inlet and outlet of said adjusting pump means through said check valve means.
Claim 11
Dependent Claim
21 words
The control system as defined in claim 1 including torque output limiting means operatively coupled to said source of driving power.
Claim 12
Dependent Claim
19 words
The control system as defined in claim 1 wherein said valve means comprises a spring biased directional valve slide.
Claim 13
Dependent Claim
40 words
The control system of claim 1 wherein said transmission means includes a hydraulic motor driving the main drive means of a vehicle; and wherein said auxiliary drive means include threshing drum means and conveyor means for said threshing drum means.
Claim 14
Dependent Claim
37 words
The control system of claim 12 wherein said threshing drum means is directly coupled with said source of driving power; and wherein said conveyor means is connected by said coupling means with said source of driving power.
Claim 15
Dependent Claim
44 words
The control system of claim 1 wherein said setting means include a manually settable stop; wherein said source of driving power includes an engine, and a fuel injection pump for said engine, said fuel injection pump having a control rod cooperating with said stop.
Claim 16
Dependent Claim
26 words
The control system of claim 1 wherein said adjusting pump has a regulator controlled by said valve means; and comprising manual means for setting said regulator.
References Cited (Backward Citations)
US3093946A
Cited
US3470681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |