Power steering pump with balanced porting

Rotary expansible chamber devices – Grooved abutting cylinder-rotating member end surfaces – Groove communicates with vane slot

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

418131, 418133, 418135, 418268, 417310, F01C 2100

Patent

active

052901556

ABSTRACT:
The balanced vane hydraulic pump designed for automotive power steering applications employs a two-piece aluminum housing construction, a cam ring, rotor flow regulating valve, a high pressure gallery, and a pressure plate, all located in the rear housing section, and a set of needle bearings located in the front housing section for supporting the pump drive shaft from one end only. The pressure plate has a sculpted portion which communicates with the cam ring side of the pressure plate. The sculpted portion is a wishbone-shaped gallery and a low pressure area, recessed within the face of the pressure plate. The pressure plate also includes high pressure windows which deliver high pressure fluid from the cartridge to the high pressure gallery located within the rear portion of the pump housing. An important feature of the pressure plate is that it uses hydraulically balanced low pressure and high pressure passageways which are contoured to efficiently direct the moving fluid within the pump which aides in minimizing the loss of energy within the pump's passageways. The front housing member, rear housing member and also the pressure plate, all employ a common symmetrical wishbone-shaped gallery as a low pressure fluid passageway which causes balanced low pressure hydraulic fluid to be delivered to two pairs of two diametrically opposed inlet windows adjacent to the low pressure inlet sectors of the cam ring. In an alternative embodiment, a thrust plate is located in the front housing member and encompasses similar wishbone-type low pressure galleries.

REFERENCES:
patent: 2212833 (1940-08-01), Huber
patent: 2856861 (1958-10-01), Adams et al.
patent: 2910944 (1959-11-01), Pettibone
patent: 3022794 (1962-02-01), Pippenger
patent: 3386648 (1968-06-01), Van Rossem
patent: 3403630 (1968-10-01), Clark et al.
patent: 3645647 (1972-02-01), Clampa et al.
patent: 3728046 (1973-04-01), Clark et al.
patent: 3788783 (1974-01-01), Rosaen
patent: 3822965 (1974-07-01), Drutchas et al.
patent: 3964844 (1976-06-01), Whitmore et al.
patent: 4038997 (1977-08-01), Smith
patent: 4408964 (1983-10-01), Mochizuki et al.
patent: 4416598 (1983-11-01), Merz
patent: 4429708 (1984-02-01), Struch
patent: 4470762 (1984-09-01), Wondler
patent: 4470764 (1984-09-01), Anderson et al.
patent: 4470765 (1984-09-01), Hegler
patent: 4470766 (1984-09-01), Masica et al.
patent: 4470768 (1984-09-01), Konz
patent: 4473341 (1984-09-01), Ohe et al.
patent: 4478237 (1984-10-01), Blake et al.
patent: 4505655 (1985-03-01), Honaga et al.
patent: 4538966 (1985-09-01), Nikaido
patent: 4538976 (1985-09-01), Shibuya
patent: 4564338 (1986-01-01), Ilg
patent: 4573890 (1986-03-01), Hadama et al.
patent: 4621986 (1986-11-01), Sudo
patent: 4770612 (1988-09-01), Teubler
patent: 4772190 (1988-09-01), Merz et al.
patent: 4801251 (1989-01-01), Nakajima et al.
patent: 4804317 (1989-02-01), Smart et al.
patent: 4838767 (1989-06-01), Ohe et al.
patent: 4842500 (1989-06-01), Fujie et al.
patent: 4859154 (1989-08-01), Alhara et al.
patent: 5017097 (1991-05-01), Nakajima
patent: 5171131 (1992-12-01), Niemiec
Sperry Vickers, "Industrial Hydraulics Manual", First Edition, Sep. 1970 (18 pages).
Sperry Vickers, Vane Pump & Motor Design Guide, "Applying Vane Units", 1976 (9 pages).
Vickers Mobile Hydraulics Manual M-2976-S, 1st Edition 1967, Edited by Basal, pp. 24-53.
"1960-1963 Vickers Corp. Jet Final Fuel Model No. 4V317L003". (Shown in Four Photographs and Two Sketches).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Power steering pump with balanced porting does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power steering pump with balanced porting, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power steering pump with balanced porting will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-572485

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.