GB1467541A – Couplings for vehicles
– Google Patents
GB1467541A – Couplings for vehicles
– Google Patents
Couplings for vehicles
Info
Publication number
GB1467541A
GB1467541A
GB1780175A
GB1780175A
GB1467541A
GB 1467541 A
GB1467541 A
GB 1467541A
GB 1780175 A
GB1780175 A
GB 1780175A
GB 1780175 A
GB1780175 A
GB 1780175A
GB 1467541 A
GB1467541 A
GB 1467541A
Authority
GB
United Kingdom
Prior art keywords
trailer
shaft
tow shaft
tow
way valve
Prior art date
1975-04-29
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
GB1780175A
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.)
1975-04-29
Filing date
1975-04-29
Publication date
1977-03-16
1975-04-29
Application filed by Individual
filed
Critical
Individual
1975-04-29
Priority to GB1780175A
priority
Critical
patent/GB1467541A/en
1977-03-16
Publication of GB1467541A
publication
Critical
patent/GB1467541A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60D—VEHICLE CONNECTIONS
B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
B60D1/30—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for sway control, e.g. stabilising or anti-fishtail devices; Sway alarm means
B60D1/32—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for sway control, e.g. stabilising or anti-fishtail devices; Sway alarm means involving damping devices
B60D1/322—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for sway control, e.g. stabilising or anti-fishtail devices; Sway alarm means involving damping devices using fluid dampers
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
B60T11/107—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 overrun brakes with fluid means
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
B60T7/00—Brake-action initiating means
B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
B60T7/20—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger specially for trailers, e.g. in case of uncoupling of or overrunning by trailer
Abstract
1467541 Vehicle towing assemblies R H ROBINSON 29 April 1975 17801/75 Heading B7T [Also in Division F2] A trailer towing assembly allowing, in use, damped longitudinal relative movement between a trailer and a towing vehicle, comprises a body assembly for mounting on the trailer, and a tow shaft provided at its forward end with a coupling element for coupling with a mating coupling element of the towing vehicle, the tow shaft being slidably mounted in the body assembly and arranged such that relative movement therebetween is damped by the flow of hydraulic fluid through a constriction formed between the tow shaft and the body assembly, a one-way valve being provided and the arrangement being such that the degree of damping is greater when, in use, the towing vehicle and trailer move away from one another than when the towing vehicle and trailer move towards one another. The trailer towing assembly 10 as embodied in Fig. 1, comprises a two shaft 13 provided at its forward end with a coupling socket and having pistons 12 slidably mounted in a body assembly formed by cylinder members 11 spaced by a plate 14. Rearward movement of the tow shaft 13 causes hydraulic fluid to flow through a one-way valve 40, through a by-pass passage 27, and through a constriction formed between a bore 18 of the plate 14 and stepped portions 23, 24, 25 of the tow shaft 13. The one-way valve 40 closes during forward movement of the tow shaft 13 so as to give a greater damping effect. The stepped portions 23, 24, 25 provide varying damping depending on the longitudinal position of the tow shaft relative to the body assembly. An adjustable bolt 32 mounted on an end portion 31 of the tow shaft 13 is arranged to operate the piston rod of a brake master cylinder, on trailer overrun, so as to actuate the trailer brakes. A locking device 33 is operable to prevent actuation of the trailer brakes during trailer reversal. In modifications of the embodiment of Fig. 1, the end portion 31 of the tow shaft may be constructed to function as an actuation piston of the trailer hydraulic overrun brake system, and the locking device 33 may be electromagnetically controlled. In the embodiment of Fig. 3, rearward movement of the tow shaft 21 relative to the body assembly 12 causes hydraulic fluid to flow into chamber portions 34, 35 through a one-way valve 38 and a two-way valve 39. During forward relative movement of the tow shaft 21 the one-way valve 38 closes to increase the damping effect. Operation of the trailer overrun brake system during trailer reversal can be prevented by closing a valve 50 which creates an “hydraulic lock” in a chamber 45. The stepped portions 31 of the tow shaft 21 of Fig. 3 may be replaced by a tapered shaft portion.
GB1780175A
1975-04-29
1975-04-29
Couplings for vehicles
Expired
GB1467541A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB1780175A
GB1467541A
(en)
1975-04-29
1975-04-29
Couplings for vehicles
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB1780175A
GB1467541A
(en)
1975-04-29
1975-04-29
Couplings for vehicles
Publications (1)
Publication Number
Publication Date
GB1467541A
true
GB1467541A
(en)
1977-03-16
Family
ID=10101467
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1780175A
Expired
GB1467541A
(en)
1975-04-29
1975-04-29
Couplings for vehicles
Country Status (1)
Country
Link
GB
(1)
GB1467541A
(en)
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0008222A1
(en)
*
1978-08-07
1980-02-20
Sacol Powerline Limited
Combined tractor and trailer coupling devices and trailer brake actuator
WO2004056633A1
(en)
*
2002-12-23
2004-07-08
Alan Murfin Brooks
Auto reserse facility in trailer vehicle to automatically over-run braking system
NL1039668C2
(en)
*
2012-06-12
2013-12-16
Franciscus Antonius Johannes Smulders
A DEVICE THAT PREVENTS THE WALKING BRAKE OF A CARAVAN UNWANTED TO WORK.
CN106671711A
(en)
*
2016-12-16
2017-05-17
约斯特（中国）汽车部件有限公司
Traction hook and traction device
1975
1975-04-29
GB
GB1780175A
patent/GB1467541A/en
not_active
Expired
Cited By (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0008222A1
(en)
*
1978-08-07
1980-02-20
Sacol Powerline Limited
Combined tractor and trailer coupling devices and trailer brake actuator
WO2004056633A1
(en)
*
2002-12-23
2004-07-08
Alan Murfin Brooks
Auto reserse facility in trailer vehicle to automatically over-run braking system
NL1039668C2
(en)
*
2012-06-12
2013-12-16
Franciscus Antonius Johannes Smulders
A DEVICE THAT PREVENTS THE WALKING BRAKE OF A CARAVAN UNWANTED TO WORK.
CN106671711A
(en)
*
2016-12-16
2017-05-17
约斯特（中国）汽车部件有限公司
Traction hook and traction device
CN106671711B
(en)
*
2016-12-16
2023-05-16
约斯特（中国）汽车部件有限公司
Traction hook and traction device
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Legal Events
Date
Code
Title
Description
1977-08-17
PS
Patent sealed
1978-12-06
PCNP
Patent ceased through non-payment of renewal fee
