GB1067306A

GB1067306A – Vacuum servo-control for operating a hydraulic brake on a trailer simultaneously with operation of the hydraulic brake on the tractor
– Google Patents

GB1067306A – Vacuum servo-control for operating a hydraulic brake on a trailer simultaneously with operation of the hydraulic brake on the tractor
– Google Patents
Vacuum servo-control for operating a hydraulic brake on a trailer simultaneously with operation of the hydraulic brake on the tractor

Info

Publication number
GB1067306A

GB1067306A
GB6746/66A
GB674666A
GB1067306A
GB 1067306 A
GB1067306 A
GB 1067306A
GB 6746/66 A
GB6746/66 A
GB 6746/66A
GB 674666 A
GB674666 A
GB 674666A
GB 1067306 A
GB1067306 A
GB 1067306A
Authority
GB
United Kingdom
Prior art keywords
tractor
chamber
brakes
piston
distributer
Prior art date
1965-02-16
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Expired

Application number
GB6746/66A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Lancia and Co Fabbrica di Automobili Torino SA

Original Assignee
Lancia and Co Fabbrica di Automobili Torino SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1965-02-16
Filing date
1966-02-16
Publication date
1967-05-03

1966-02-16
Application filed by Lancia and Co Fabbrica di Automobili Torino SA
filed
Critical
Lancia and Co Fabbrica di Automobili Torino SA

1967-05-03
Publication of GB1067306A
publication
Critical
patent/GB1067306A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

B—PERFORMING OPERATIONS; TRANSPORTING

B60—VEHICLES IN GENERAL

B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES

B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant

B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic

B60T11/108—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic to a trailer fluid system

B—PERFORMING OPERATIONS; TRANSPORTING

B60—VEHICLES IN GENERAL

B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES

B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems

B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release

B60T13/58—Combined or convertible systems

B60T13/581—Combined or convertible systems both hydraulic and pneumatic

Abstract

1,067,306. Trailer brakes. LANCIA & C FABRICA AUTOMOBILI – TORINO S.p.A. Feb. 16, 1966 [Feb. 16, 1965], No. 6746/66. Heading F2F. A vacuum-servo control 18 causes an hydraulic cylinder 14 to operate the brakes 15 of a trailer 2 simultaneously with the operation of the brakes 4, 5 of its tractor 1 by a pedal actuated master cylinder 3. The control 18 is on the trailer and comprises a pneumatic cylinder subdivided into chambers 19 and 20 by a piston 21 connected to the piston-rod 24 of the hydraulic cylinder 14 and operating against a return spring 22. A distributer valve 27 on the tractor has a pneumatic chamber similarly divided by a diaphragm (Fig. 2, not shown), into two chambers, normally interconnected, and joined by a pipe 35 to the inlet manifold of the tractor engine 11 and by way of a pipe 39 and coupling 40 to the chamber 19. The first of these chambers is also connected by way of junction 34 and coupling 37 to the chamber 20 and also to a tank 58 which makes up vacuum loss during operation. Two other pipes 53 and 54 connect an hydraulic cylinder in the distributer so as to operate alternatively (in case of failure) on a piston therein. Application of the tractor brakes causes hydraulic pressure to lift the piston in the distributer which seals off the two pneumatic chambers therein from each other and admits air to one of the chambers which is connected to the chamber 19 of the servo on the trailer, causing it to act on the piston 19 to operate the hydraulic cylinder 14 and apply the tractor brakes 15. In addition, the atmospheric pressure in the one chamber of the distributer bears on the diaphragm which is supported only by the vacuum in its other chamber thereby causing additional hydraulic pressure to be applied through the distributer piston to the tractor brakes. On release of the brake pedal 20 the resiliency of the aforesaid diaphragm and of the spring 22 assist in restoring the system to its original state. Valves in the couplings 37 and 40 and a non-return valve 25 ensure that if a pipe breaks or the couplings fail the tractor brakes are kept applied. To take them off a three-way tap 59 can be operated to admit air to the chamber 20.

GB6746/66A
1965-02-16
1966-02-16
Vacuum servo-control for operating a hydraulic brake on a trailer simultaneously with operation of the hydraulic brake on the tractor

Expired

GB1067306A
(en)

Applications Claiming Priority (2)

Application Number
Priority Date
Filing Date
Title

IT381765

1965-02-16

IT1418166

1966-06-18

Publications (1)

Publication Number
Publication Date

GB1067306A
true

GB1067306A
(en)

1967-05-03

Family
ID=26325489
Family Applications (2)

Application Number
Title
Priority Date
Filing Date

GB6746/66A
Expired

GB1067306A
(en)

1965-02-16
1966-02-16
Vacuum servo-control for operating a hydraulic brake on a trailer simultaneously with operation of the hydraulic brake on the tractor

GB28208/67A
Expired

GB1140236A
(en)

1965-02-16
1967-06-19
Vacuum servo-control for operating the brake on a trailer simultaneously with operation of the hydraulic brake on the tractor

Family Applications After (1)

Application Number
Title
Priority Date
Filing Date

GB28208/67A
Expired

GB1140236A
(en)

1965-02-16
1967-06-19
Vacuum servo-control for operating the brake on a trailer simultaneously with operation of the hydraulic brake on the tractor

Country Status (4)

Country
Link

US
(1)

US3361485A
(en)

DE
(1)

DE1580260A1
(en)

FR
(2)

FR1469752A
(en)

GB
(2)

GB1067306A
(en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US2305638A
(en)

*

1941-06-13
1942-12-22
Edward A Rockwell
Hydraulic brake trailer system

US2463172A
(en)

*

1945-01-06
1949-03-01
Ralph R Gunderson
Tractor-trailer power brake system

1966

1966-02-16
FR
FR46945A
patent/FR1469752A/en
not_active
Expired

1966-02-16
DE
DE19661580260
patent/DE1580260A1/en
active
Pending

1966-02-16
US
US527912A
patent/US3361485A/en
not_active
Expired – Lifetime

1966-02-16
GB
GB6746/66A
patent/GB1067306A/en
not_active
Expired

1967

1967-06-16
FR
FR48791A
patent/FR92635E/fr
not_active
Expired

1967-06-19
GB
GB28208/67A
patent/GB1140236A/en
not_active
Expired

Also Published As

Publication number
Publication date

US3361485A
(en)

1968-01-02

FR92635E
(en)

1968-12-06

GB1140236A
(en)

1969-01-15

FR1469752A
(en)

1967-02-17

DE1580260A1
(en)

1970-12-23

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