GB1341724A - Brake mechanisms for trailers - Google Patents

Brake mechanisms for trailers

Info

Publication number
GB1341724A
GB1341724A GB1341724DA GB1341724A GB 1341724 A GB1341724 A GB 1341724A GB 1341724D A GB1341724D A GB 1341724DA GB 1341724 A GB1341724 A GB 1341724A
Authority
GB
United Kingdom
Prior art keywords
link
trailer
brake
lockable
over
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.)
Expired
Application number
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.)
Jonas Woodhead Ltd
Original Assignee
Jonas Woodhead Ltd
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 Jonas Woodhead Ltd filed Critical Jonas Woodhead Ltd
Publication of GB1341724A publication Critical patent/GB1341724A/en
Expired legal-status Critical Current

Links

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
    • 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
    • B60T7/203—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 with automatic brake release or reduction in case of reverse travel, e.g. by means of mechanisms mounted on the draw bar

Abstract

1341724 Trailer over-run brakes JONAS WOODHEAD Ltd 18 Jan 1972 [20 Jan 1971] 2728/71 Heading F2E Operation of the over-run brake of a trailer is prevented during reversing by the insertion of a lockable extensible link 5 in the braking connection 4, a manually operable brake connection 7 being provided which by-passes the lockable link so that manual braking is retained regardless of the condition of the link, e.g. when the trailer is parked. The extensible link 5 comprises a piston moving in a cylinder and including a solenoid-operated valve by means of which the piston may be rendered free in the bore or locked in position in it to transmit braking force as described in Specification 1,334,673: For reversing, the link 5 is unlocked electrically. Normal operation of the arrangement is as follows: The ball-hitch 12 of the towing vehicle is connected to a hollow ram 13 including a telescopic damper 16 connected to fixed arms 19 on the trailer frame 1, 2. Over-running by the trailer causes ram 13 to press levers 22 pivoted at 23 to operate the brake linkage 4 connected at pin 24 to the other ends of the levers. A hand brake lever 6, indexed by ratchet plate 33 pulls at pin 37 and clevis 36 on the bypass link 7 which reaches to a point 39 at the other end of the lockable link 5, or in a modification (Fig. 3, not shown) to the trailer brake actuating lever. It may be additionally secured by cable 41 fastened by hook 43 to the ball hitch 12.
GB1341724D 1971-01-20 1971-01-20 Brake mechanisms for trailers Expired GB1341724A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB272871 1971-01-20

Publications (1)

Publication Number Publication Date
GB1341724A true GB1341724A (en) 1973-12-25

Family

ID=9744770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1341724D Expired GB1341724A (en) 1971-01-20 1971-01-20 Brake mechanisms for trailers

Country Status (4)

Country Link
DE (1) DE2202711A1 (en)
FR (1) FR2122544A1 (en)
GB (1) GB1341724A (en)
NL (1) NL7200748A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO340516B1 (en) * 2016-09-21 2017-05-02 Svela Solutions As Device that prevents the activation of the trailer's brake during backing
DE202017105492U1 (en) 2017-09-11 2017-10-02 Svela Solutions As System for preventing the activation of a trailer overrun during reverse drive
US10507808B2 (en) 2017-09-11 2019-12-17 Svela Solutions As System for preventing a trailer's overrun brakes from being activated during reversing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO340516B1 (en) * 2016-09-21 2017-05-02 Svela Solutions As Device that prevents the activation of the trailer's brake during backing
NO20161512A1 (en) * 2016-09-21 2017-05-02 Svela Solutions As Device that prevents activation of the trailer's inertia brake during reversing
WO2018056832A1 (en) 2016-09-21 2018-03-29 Svela Solutions As A system preventing the activation of a trailer's overrun brakes during reversing
DE202017105492U1 (en) 2017-09-11 2017-10-02 Svela Solutions As System for preventing the activation of a trailer overrun during reverse drive
US10507808B2 (en) 2017-09-11 2019-12-17 Svela Solutions As System for preventing a trailer's overrun brakes from being activated during reversing

Also Published As

Publication number Publication date
NL7200748A (en) 1972-07-24
DE2202711A1 (en) 1972-07-27
FR2122544A1 (en) 1972-09-01

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees