초록 ▼

A pinch-type shut-off, pressure- or flow-regulating valve having a flexible tube extending through a valve body wherein the flexible tube is pinched off by the action of an eccentric cam attached to a motor. As the eccentric cam is rotated the flexible tube can be pinched off as it presses against t

A pinch-type shut-off, pressure- or flow-regulating valve having a flexible tube extending through a valve body wherein the flexible tube is pinched off by the action of an eccentric cam attached to a motor. As the eccentric cam is rotated the flexible tube can be pinched off as it presses against the opposing wall inside the valve body. A number of positions of pinching off can be achieved and a microswitch can be available to locate the position of the eccentric cam.

대표청구항 ▼

A pinch-type shut-off, pressure- or flow-regulating valve comprising: a valve body having at least one hole therethrough for placement of tubing, a flexible tube located in said at least one tube in said valve body, an eccentric including a substantially cylindrically shaped body, said eccentric loc

A pinch-type shut-off, pressure- or flow-regulating valve comprising: a valve body having at least one hole therethrough for placement of tubing, a flexible tube located in said at least one tube in said valve body, an eccentric including a substantially cylindrically shaped body, said eccentric located in said valve body and adjacent said flexible tube, a shaft projecting from one side of said cylindrically shaped body, said shaft being offset from the center of said cylindrically shaped body, a motor attached to said shaft, whereupon activation of said motor, said eccentric will move to pinch off said flexible tube by pressing said tube against the opposite side of said valve body, said eccentric further including a round rigid sleeve freely rotatably received about the outer curved portion of said cylindrically shaped body as said cylindrically shaped body rotates, and said sleeve directly engaging said tube, whereby longitudinal stress on said tube from said eccentric is substantially alleviated.