Motors: expansible chamber type – With motive fluid valve – Contracting chamber exhaust valve controlled by expanding...
Patent
1998-01-08
1999-12-07
Nguyen, Hoang
Motors: expansible chamber type
With motive fluid valve
Contracting chamber exhaust valve controlled by expanding...
91435, 91436, 91458, F15B 1108
Patent
active
059964650
ABSTRACT:
An oil-pressure cylinder in a crushing device is connected to a crushing jaw via a pivot shaft so that the crushing jaw can open and close. The extension of oil-pressure cylinder causes the crushing jaw to close and crush the object to be crushed. Oil-pressure cylinder has a piston with a greater pressure-receiving area on the head side than on the rod side. An acceleration valve serves to switch the extension/retraction operations of the oil-pressure cylinder. During a rod unloaded interval, beginning when the crushing jaw starts to close and ending when the crushing jaw comes into contact with the object to be crushed, the acceleration valve makes communication between a head-side port and a rod-side port in the cylinder continuous, while the oil path from the rod side to a tank is blocked. The oil from the rod side is made to flow to the head side. This speeds up the movement of the rod in the closing operation during the unloaded interval before the crushing jaw comes into contact with the object being held on a fixed jaw at which time communication of the head-side oil-port with the rod-side oil port is interrupted.
REFERENCES:
patent: 4216702 (1980-08-01), Brundidge et al.
patent: 4836088 (1989-06-01), Seabaugh
patent: 5065664 (1991-11-01), Ohta et al.
patent: 5263400 (1993-11-01), Huesser
Morikawa Sumio
Zakohji Nobuyuki
Nguyen Hoang
Oyodo Komatsu Co., Ltd.
LandOfFree
Oil pressure device 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 device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oil pressure device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-812082