IT1229429B - Hydraulic connection and control unit for tractor and trailer - Google Patents
Hydraulic connection and control unit for tractor and trailerInfo
- Publication number
- IT1229429B IT1229429B IT8920763A IT2076389A IT1229429B IT 1229429 B IT1229429 B IT 1229429B IT 8920763 A IT8920763 A IT 8920763A IT 2076389 A IT2076389 A IT 2076389A IT 1229429 B IT1229429 B IT 1229429B
- Authority
- IT
- Italy
- Prior art keywords
- tractor
- trailer
- control unit
- hydraulic connection
- braking
- Prior art date
Links
- 239000012530 fluid Substances 0.000 abstract 1
Abstract
The hydraulic connection and control unit has a body (1,2) with a valve (69) mounted against a spring (60,67) and intercepting a delivery aperture (73A) when the trailer is separated from the tractor. When the trailer is connected to the tractor the valve frees the aperture and moves the control (20) enabling the pump, on braking the tractor, to raise the pressure of the brake fluid for the trailer braking system to the value required for braking the tractor.$ The control is held within a chamber (19) which is connected via ducts (5,18) to the body (1,2).$
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8920763A IT1229429B (en) | 1989-06-02 | 1989-06-02 | Hydraulic connection and control unit for tractor and trailer |
ES90109541T ES2066904T3 (en) | 1989-06-02 | 1990-05-19 | DEVICE TO ESTABLISH THE HYDRAULIC CONNECTION AND THE CONTROL BETWEEN A TRACTOR DRIVING CIRCUIT AND THE TRAILER BRAKING SYSTEM. |
DE69014235T DE69014235T2 (en) | 1989-06-02 | 1990-05-19 | Device for establishing a hydraulic connection and for controlling between a tractor working group and the braking system of a trailer. |
AT90109541T ATE114278T1 (en) | 1989-06-02 | 1990-05-19 | DEVICE FOR ESTABLISHING A HYDRAULIC CONNECTION AND CONTROL BETWEEN A TRACTOR WORKING CIRCUIT AND THE BRAKING SYSTEM OF A TRAILER. |
EP90109541A EP0400432B1 (en) | 1989-06-02 | 1990-05-19 | Device for providing hydraulic connection and control between a tractor operating circuit and the braking system of a trailer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8920763A IT1229429B (en) | 1989-06-02 | 1989-06-02 | Hydraulic connection and control unit for tractor and trailer |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8920763A0 IT8920763A0 (en) | 1989-06-02 |
IT1229429B true IT1229429B (en) | 1991-08-08 |
Family
ID=11171708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT8920763A IT1229429B (en) | 1989-06-02 | 1989-06-02 | Hydraulic connection and control unit for tractor and trailer |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1229429B (en) |
-
1989
- 1989-06-02 IT IT8920763A patent/IT1229429B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8920763A0 (en) | 1989-06-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970527 |