Patent ID: 6966340
Filing Date: 2005-11-22
Classification: F15B,F16K,Y10T

Abstract:
1. A slide spool valve comprising: a valve body having a bore penetrated by a plurality of ports spaced at predetermined intervals, including a supply port, two load ports located on opposite sides of the supply port, and two exhaust ports located on opposite sides of the load ports, and tapered valve chambers at each end of the bore which are penetrated by a respective exhaust port, the tapered valve chambers each having a smallest diameter which is larger than a diameter of the bore and an outer end diameter which is larger than the smallest diameter; an insert including a hollow portion inserted in and attached to the bore, and a valve chamber which extends from an inner circumferential surface of the hollow portion to the supply port and is connected to the supply port; and a valve spool, movably inserted in the bore and the hollow portion of the insert, and selectively connecting and disconnecting the plurality of ports according to operation of the slide spool valve.