Multiple-directional switching valve

Details Multiple-directional switching valve Multiple-directional switching valve

2006-06-13

2006-06-13

Look, Edward K. (Department: 3745)

Motors: expansible chamber type

Plural relatively movable or rigidly interconnected working...

Condition responsive means for modifying working member...

C414S700000

Reexamination Certificate

active

07059237

ABSTRACT:
In a multiple-switching valve having a bucket-leveling function, there are provided a diverged passage, which is diverged from a merged passage and connects with an unloading passage or a tank passage, and a switching valve to disconnect and connect the diverged passage. The switching valve allows a pressured oil drained from a rod-side chamber of a boom cylinder via a directional switching valve for boom to be supplied to the merged passage flow in the diverged passage, thereby preventing the pressure oil from being supplied to a head-side chamber of the bucket cylinder. Accordingly, the bucket-leveling function can be cancelled properly, thereby improving the operation of the multiple-directional switching valve.

REFERENCES:
patent: 3563137 (1971-02-01), Graber et al.
patent: 4408518 (1983-10-01), Diel et al.
patent: 5447094 (1995-09-01), Geyler, Jr.
patent: 5669282 (1997-09-01), Tanino et al.
patent: 5797310 (1998-08-01), Casey et al.
patent: 6389953 (2002-05-01), Altman et al.
patent: 02-096028 (1990-04-01), None
patent: 07-252857 (1995-10-01), None

Affiliated with

Also associated with

Rating

Multiple-directional switching valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple-directional switching valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple-directional switching valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3645142