| 摘要 |
A pressure-regulating valve having a force-feedback arrangement for indicating the fluid delivery, has a force cam rotatable along with an actuator member, shaft arrangement which controls the fluid delivery. At least one cam slot is formed in the force cam at an angle to the axis of the force cam. An annular ring is fixed within the valve housing in a coaxially surrounding relation to the force cam. At least one guide slot is formed on the annular ring parallel to the axis of the annular ring and adjacent the cam slot formed on the force cam. A follower pin extends between the adjacent cam and guide slots and is axially movable under the influence of a cam force exerted upon rotation of the force cam. A feedback piston is movable within a piston chamber located adjacent the force cam. The feedback piston contacts the follower pin which is a function of the delivered fluid value. The piston force is exerted in a direction opposite movement of the follower pin resulting from rotation of the force cam. |
