GB772070A - Mechanical wedge-lock parking brake - Google Patents

Mechanical wedge-lock parking brake

Info

Publication number
GB772070A
GB772070A GB9726/55A GB972655A GB772070A GB 772070 A GB772070 A GB 772070A GB 9726/55 A GB9726/55 A GB 9726/55A GB 972655 A GB972655 A GB 972655A GB 772070 A GB772070 A GB 772070A
Authority
GB
United Kingdom
Prior art keywords
pistons
actuated
disc
brake
secured
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
GB9726/55A
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.)
Goodyear Tire and Rubber Co
Original Assignee
Goodyear Tire and Rubber Co
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 Goodyear Tire and Rubber Co filed Critical Goodyear Tire and Rubber Co
Publication of GB772070A publication Critical patent/GB772070A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/228—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

772,070. Disc brakes. GOODYEAR TIRE & RUBBER CO. April 4,1955 [Nov. 3, 1954], No. 9726/55. Class 103 (1). In a fluid-pressure operated brake, lock means are provided for mechanically engaging pistonpins, extending from the pistons associated with the pads of friction material, such as to hold the latter in frictional engagement with the rotatable member. In the embodiment illustrated applied to a " spot-type " disc brake associated with an axle wherein Fig. 3 is a section through 3-3 of Fig. 1, the brake disc 2 is secured to a hub ring 3 carried by a rotatable axle 4 and is braked by means of pads of friction material 12 which are backed by pistons 11, operating in chambers 8 and 9 in a fixed housing 5, which may normally be actuated by hydraulic pressure into frictional engagement with the sides of the disc. As may be seen from Fig. 1 there are two pairs of pistons effecting frictional engagement; one pair being actuated alternatively by mechanical actuation means. The mechanical actuation means comprises wedge-shaped control links 20, operating in slots 19 in guide blocks 17 secured to the brake housing 5, which are connected to mechanical braking members 21. Secured to each of the pistons 11 which are to be actuated mechanically is a piston-pin 14 extending into the guide-blocks 17 and provided with a slot 16 through which passes the control link 20. Thus these pistons may be actuated by hydraulic fluid via line 6, bores 10 and chambers 8 and 9 or alternatively by mechanical actuation by exerting a pull in the direction of the arrow indicated in Fig. 1, on mechanical braking members 21. Springs 23 allow the control links 20 to be returned to their inoperative positions when the mechanical braking members 21 are released, and after application of fluid pressure has, by additional compression of blocks 12, eased or released the pressure exerted upon the control links 20 by the frictional action of the inclined wedging surface 22 and the slot 16 in piston-pins 14. Reference has been directed by the Comptroller to Specification 732,724.
GB9726/55A 1954-11-03 1955-04-04 Mechanical wedge-lock parking brake Expired GB772070A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US772070XA 1954-11-03 1954-11-03

Publications (1)

Publication Number Publication Date
GB772070A true GB772070A (en) 1957-04-10

Family

ID=22136683

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9726/55A Expired GB772070A (en) 1954-11-03 1955-04-04 Mechanical wedge-lock parking brake

Country Status (2)

Country Link
FR (1) FR1125875A (en)
GB (1) GB772070A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425519A (en) * 1966-06-11 1969-02-04 Teves Kg Alfred Disk-brake system including plural actuators
US3429405A (en) * 1966-06-29 1969-02-25 Teves Kg Alfred Disk-brake and actuating means therefor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE508707C2 (en) * 1995-10-02 1998-10-26 Volvo Ab Device for disc brakes for motor vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425519A (en) * 1966-06-11 1969-02-04 Teves Kg Alfred Disk-brake system including plural actuators
US3429405A (en) * 1966-06-29 1969-02-25 Teves Kg Alfred Disk-brake and actuating means therefor

Also Published As

Publication number Publication date
FR1125875A (en) 1956-11-09

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