GB2374389A - Towed vehicle over-run braking system intensifying unit triggered by brake light circuit - Google Patents

Towed vehicle over-run braking system intensifying unit triggered by brake light circuit Download PDF

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Publication number
GB2374389A
GB2374389A GB0108922A GB0108922A GB2374389A GB 2374389 A GB2374389 A GB 2374389A GB 0108922 A GB0108922 A GB 0108922A GB 0108922 A GB0108922 A GB 0108922A GB 2374389 A GB2374389 A GB 2374389A
Authority
GB
United Kingdom
Prior art keywords
brake
brakes
intensifying
vehicle
towing
Prior art date
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.)
Withdrawn
Application number
GB0108922A
Other versions
GB0108922D0 (en
Inventor
Edward James Yaxley
Anthony Victor Binks
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0108922A priority Critical patent/GB2374389A/en
Publication of GB0108922D0 publication Critical patent/GB0108922D0/en
Publication of GB2374389A publication Critical patent/GB2374389A/en
Withdrawn legal-status Critical Current

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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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/24—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle inclination or change of direction, e.g. negotiating bends
    • B60T8/245—Longitudinal vehicle inclination
    • 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
    • B60T13/02—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 mechanical assistance or drive
    • B60T13/06—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 mechanical assistance or drive by inertia, e.g. flywheel
    • B60T13/08—Overrun brakes
    • 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
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/24—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle inclination or change of direction, e.g. negotiating bends
    • B60T8/248—Trailer sway, e.g. for preventing jackknifing

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Braking Arrangements (AREA)

Abstract

An over-run brake system 1 for a towed vehicle such as a caravan, also has an air compressor and receiver 2, and air pressure regulator 3. An electrically operated pneumatic valve 4 triggered by a stop lamp circuit allows air at a pre-determined pressure to an intensifying unit 5 which applies pressure to stop-collar 6 pushing over-run brake rod 7 to activate vehicle brakes 8. Lightly applying pressure to a pedal of a towing vehicle applies the brakes of the towed vehicle, damping any instability; while a normal brake application applies all the brakes simultaneously, eliminating the time lag resulting from compressing a telescopic tow hitch, thereby improving stability under braking.

Description

<Desc/Clms Page number 1>
DESCRIPTION.
BRAKE INTENSIFYING SYSTEM.
This invention relates to a Brake Intensifying System for a vehicle which is adapted to be towed by a towing vehicle, and particularly but, not exclusively, to a brake intensifying system for a caravan to be towed by a car or other towing vehicle.
If the caravan and car combination loading and nose weight limits are correct, the combination is normally stable on the road. However, when overtaken by large h. g. v's wind buffeting or suction can affect the caravan and snaking may occur. This can then be exaggerated when travelling down-hill, then the best way to return stability to the combination is to accelerate the car to create a pull between car and caravan, which acts to damp out the instability. However, this is not always possible if the speed of the combination is too high at the on-set of snaking.
Under such circumstances acceleration would only aggravate the situation.
Over-run braking systems are activated by the forward motion of the caravan, pushing the car when the brakes are activated, this creates pressure at the tow-hitch which is transmitted via a telescopic arrangement to the over-run rod which applies the caravan brakes.
When the combination is snaking and unstable however, pressure at tow hitch is intermittent and variable in direction, and application of the car brakes could result in a jack-knife situation.
According to this invention there is provided a brake intensifying system for a towable vehicle: comprising: :: :: : A compressor and air receiver, a pressure regulator electro-pneumatic valve, and brake intensifying unit, activated by stop lights of towing vehicle, by lightly applying towing vehicle brakes. Caravan brakes are applied at a pre-determined pressure to create a pull between car and caravan thus damping out any instability.
Under normal braking, towing vehicle and caravan brakes are activated simultaneously, due to operation of the brake intensifying unit, eliminating the time lag the caravan takes to compress the telescopic arrangement. Thus creating a more stable combination under braking conditions.

Claims (6)

CLAIMS.
1. A Brake Intensifying System for a towable vehicle, adapted to be towed by a towing vehicle.
The system comprising: Brake Intensifying Unit powered by compressor, air receiver and regulator.
2. A brake system according to claim 1. wherein the system utilizes the towable vehicles brakes.
3. A brake system according to any one of the preceeding claims, wherein an electrically operated pneumatic valve detects when towing vehicles brakes are activated, and activates to operate main intensifying unit.
4. A brake system according to any one of preceding claims wherein the system is powered from towing vehicles power system.
5. A brake intensifying system that allows the towable vehicles brakes to be activated independant of the towing vehicles brakes by applying light pedal pressure.
6. A brake intensifying system that applies towing and towable vehicles brakes simultaneously, thus eliminating time delay of normal over-run braking systems.
GB0108922A 2001-04-10 2001-04-10 Towed vehicle over-run braking system intensifying unit triggered by brake light circuit Withdrawn GB2374389A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0108922A GB2374389A (en) 2001-04-10 2001-04-10 Towed vehicle over-run braking system intensifying unit triggered by brake light circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0108922A GB2374389A (en) 2001-04-10 2001-04-10 Towed vehicle over-run braking system intensifying unit triggered by brake light circuit

Publications (2)

Publication Number Publication Date
GB0108922D0 GB0108922D0 (en) 2001-05-30
GB2374389A true GB2374389A (en) 2002-10-16

Family

ID=9912572

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0108922A Withdrawn GB2374389A (en) 2001-04-10 2001-04-10 Towed vehicle over-run braking system intensifying unit triggered by brake light circuit

Country Status (1)

Country Link
GB (1) GB2374389A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1031394C2 (en) * 2006-03-17 2007-09-18 Reich Kg Brake control.
GB2500221A (en) * 2012-03-14 2013-09-18 Tractair Ltd Vehicle brake apparatus having a trailer with an electro-pneumatic valve, controlled based on a vehicle parameter signal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109968A (en) * 1977-07-28 1978-08-29 Rollin L. Wood Tractor-trailer brake system with improved means for assuring application of trailer brakes concomitantly with tractor brakes
DE3124479A1 (en) * 1981-06-23 1982-12-30 Robert Bosch Gmbh, 7000 Stuttgart Road train brake system
EP0319970A2 (en) * 1987-12-08 1989-06-14 Rudolf Paukner Brake device for trailers
US5915798A (en) * 1997-07-01 1999-06-29 Ford; Billy C. Towed vehicle braking system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109968A (en) * 1977-07-28 1978-08-29 Rollin L. Wood Tractor-trailer brake system with improved means for assuring application of trailer brakes concomitantly with tractor brakes
DE3124479A1 (en) * 1981-06-23 1982-12-30 Robert Bosch Gmbh, 7000 Stuttgart Road train brake system
EP0319970A2 (en) * 1987-12-08 1989-06-14 Rudolf Paukner Brake device for trailers
US5915798A (en) * 1997-07-01 1999-06-29 Ford; Billy C. Towed vehicle braking system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1031394C2 (en) * 2006-03-17 2007-09-18 Reich Kg Brake control.
EP1834852A1 (en) * 2006-03-17 2007-09-19 Reich KG Brake operating mechanism
GB2500221A (en) * 2012-03-14 2013-09-18 Tractair Ltd Vehicle brake apparatus having a trailer with an electro-pneumatic valve, controlled based on a vehicle parameter signal

Also Published As

Publication number Publication date
GB0108922D0 (en) 2001-05-30

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)