Oil pressure supply circuit for industrial vehicle

Details Oil pressure supply circuit for industrial vehicle Oil pressure supply circuit for industrial vehicle

2007-08-22

2009-10-13

Leslie, Michael (Department: 3745)

Motors: expansible chamber type

Plural relatively movable or rigidly interconnected working...

Condition responsive means for modifying working member...

C060S422000

Reexamination Certificate

active

07600463

ABSTRACT:
A priority flow rate control valve (4) increases a distribution ratio of pressurized oil to a power steering device (1) of a fork-lift track via a power steering oil passage (9) as a differential pressure between a power steering pressure (PS) in the power steering oil passage (9) and a pilot pressure (LS) decreases. A load signal port (24) which outputs a pressure indicative of a load exerted on the power steering device (1) and the power steering oil passage (9) are connected via two orifices (26A,26B), and the pilot pressure (LS) pressure is extracted from a point between the two orifices (26A,26B). By providing a bypass passage (31, 35) which bypasses one of the two orifices (26A,26B) and a bypass valve (30) which opens and closes the bypass passage (26A,26B), a response of the priority flow rate control valve (4) can be increased temporarily.

REFERENCES:
patent: 4759182 (1988-07-01), Haarstad
patent: 5179835 (1993-01-01), Casey et al.
patent: 5620026 (1997-04-01), Stephenson et al.
patent: 5927072 (1999-07-01), Vannette
patent: 7353649 (2008-04-01), Yoshida et al.
patent: 2004/0149498 (2004-08-01), Nakashima
patent: 35 40 236 (1986-06-01), None
patent: 1-183426 (1989-07-01), None
patent: 4-228371 (1992-08-01), None
patent: 5-178223 (1993-07-01), None
patent: 8-192758 (1996-07-01), None
patent: 2004-196110 (2004-07-01), None

Affiliated with

Also associated with

Rating

Oil pressure supply circuit for industrial vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Oil pressure supply circuit for industrial vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oil pressure supply circuit for industrial vehicle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4102357