Patent ID: 6237624
Filing Date: 2001-05-29
Classification: F15B,G05D,H01H,Y10T

Abstract:
A pressure regulator with a position detector for regulating hydraulic pressure to an adjustable value, comprising a housing (1), a seat valve (5) between a first chamber (2) containing unregulated pressure (P') and a second chamber (3) containing regulated pressure (A) controlled by a regulated force (K), a seat valve closure member (6) movable in said first chamber from a seat valve (5) closing position to a seat valve opening position, a control piston (9) mounted for slidable movement in said second chamber (3) as influenced by said regulated pressure (A) of said chamber (3) and counter to said regulated pressure by said regulated force (K), said control piston being movable freely relative to said seat valve closure member and engageable with said seat valve closure member to open said seat valve, characterized in that said control piston (9) is coupled mechanically to a position detector (M) which generates a signal indicating that the regulated pressure has reached a selected proportion of the adjusted pressure in accordance with the position of said control piston (9) within the adjustment range of said seat valve which is sealed against leakage when said valve closure member is seated on said seat valve, said regulated force (K) applied to said control piston by a disc (12), said mechanical coupling (20) connected to said disc, said mechanical coupling including a plunger (18) displaceable parallel to the movement of said control system and being aligned with an actuating element (17) of said position detector, said position detector is adjustably mounted to an outer surface of said housing (1).