Fluid handling – Line condition change responsive valves – Bi-directional flow valves
Reexamination Certificate
2000-03-03
2001-10-02
Hepperle, Stephen M. (Department: 3753)
Fluid handling
Line condition change responsive valves
Bi-directional flow valves
C137S454500, C137S599110, C137S516150, C137S601210, C251S148000
Reexamination Certificate
active
06296013
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a pressure/flow rate control valve which makes it possible to control the pressure and the flow rate of a pressure fluid supplied to or discharged from an actuator such as a cylinder.
2. Description of the Related Art
A pressure/flow rate control valve has been hitherto known, which is used to control the pressure and the flow rate of a pressure fluid supplied to or discharged from an actuator such as a cylinder.
In order to solve the delay of the initial starting time, the present applicant has suggested a pressure/flow rate-adjusting valve comprising a pressure control section for quickly supplying the supply pressure to the inside of a cylinder in a free flow manner to drive the cylinder, while quickly discharging the pressure from the cylinder until arrival at a preset pressure, and a flow rate-adjusting section for controlling the movement speed of the cylinder by adjusting a throttle valve during the exhaust process based on the meter-out control (see Japanese Utility Model Publication No. 59-12404).
SUMMARY OF THE INVENTION
A general object of the present invention is to provide a pressure/flow rate control valve which makes it possible to decrease the time loss resulting from the difference in pressure between a first cylinder chamber and a second cylinder chamber when a piston is started at a low pressure.
REFERENCES:
patent: 4197874 (1980-04-01), Neff
patent: 4450861 (1984-05-01), Bouteille
patent: 5477829 (1995-12-01), Hassinger et al.
patent: 6131610 (2000-10-01), Morisako et al.
patent: 59-12404 (1984-04-01), None
Hosono Masayuki
Yang Qinghai
Hepperle Stephen M.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
SMC Kabushiki Kaisha
LandOfFree
Pressure/flow rate control 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 Pressure/flow rate control valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure/flow rate control valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2600556