GB981959A - Improvements in power steering for vehicles - Google Patents

Improvements in power steering for vehicles

Info

Publication number
GB981959A
GB981959A GB627463A GB627463A GB981959A GB 981959 A GB981959 A GB 981959A GB 627463 A GB627463 A GB 627463A GB 627463 A GB627463 A GB 627463A GB 981959 A GB981959 A GB 981959A
Authority
GB
United Kingdom
Prior art keywords
piston
valve
rotation
shaft
bore
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
GB627463A
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
Publication of GB981959A publication Critical patent/GB981959A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/061—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle provided with effort, steering lock, or end-of-stroke limiters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/20—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application
    • B62D5/24—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle specially adapted for particular type of steering gear or particular application for worm type

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)

Abstract

981,959. Power-assisted steering. R. H. SHEPPARD. Feb. 15, 1963, No. 6274/63. Heading B7H. In a power steering mechanism comprising; a fluid distributing valve 48 in threaded engagement with a steering shaft 60 and mounted with limited axial movement within a piston 35 working in a bore 11 within a housing 10, valves 79 are provided to release the fluid pressure acting on the piston before the piston completes its stroke in either direction. When rotation of the shaft 60 displaces the valve 48 fluid supplied by a pump through an inlet 20, a groove 22 in the piston 35 and a port 45 is directed by the valve 48 through either of passages 90, 91 (Fig. 3) in the piston to one of chambers 70, 74 at opposite ends of the piston, the other chamber 74 or 70 being connected by the valve 48 to one of ports 53, 97 communicating with an exit port 56. Before the piston 35 reaches the end of its travel one of the valves 79 is unseated by one of adjustable plungers 84 whereby the incoming fluid flowing through the port 45 flows via the low-pressure side of the piston 35 to the exit port 56. Although power movement of the piston 35 is so limited the piston stroke can be completed manually by rotation of the shaft 60. An axial passageway 71 and slots 72, 73 in the valve 48 equalize fluid pressure on opposite sides thereof, and spring washers 47 urge the valve 48 into mid-position to provide " feel." A pin screwed into the housing 10 projects into the bore 11 and carries a roller engaging a slot in the piston 35 to prevent rotation in the bore, and a further pin screwed into the piston 35 prevents rotation of the valve 48. Rack teeth 18 on the piston 35 mesh with a gear 30 splined to an .output shaft 25.
GB627463A 1963-02-27 1963-02-15 Improvements in power steering for vehicles Expired GB981959A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0089927 1963-02-27

Publications (1)

Publication Number Publication Date
GB981959A true GB981959A (en) 1965-02-03

Family

ID=7515433

Family Applications (1)

Application Number Title Priority Date Filing Date
GB627463A Expired GB981959A (en) 1963-02-27 1963-02-15 Improvements in power steering for vehicles

Country Status (2)

Country Link
DE (1) DE1455939A1 (en)
GB (1) GB981959A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1415959A (en) * 1973-06-12 1975-12-03 Autoipari Kutato Intezet Power steering for motor vehicles
US4088063A (en) * 1976-10-29 1978-05-09 Sheppard Richard H Power steering gear with short piston and fluid bearings
WO1987000811A1 (en) * 1985-08-07 1987-02-12 Zahnradfabrik Friedrichshafen Ag Servomotor
US4648307A (en) * 1985-10-10 1987-03-10 Trw, Inc. Unloading valve for power steering piston with integral gear

Also Published As

Publication number Publication date
DE1455939A1 (en) 1969-01-23

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