Movement actuator/sensor systems

Details Movement actuator/sensor systems Movement actuator/sensor systems

1996-11-07

1998-06-23

Lee, Kevin

Valves and valve actuation

Electrically actuated valve

Having element dimensionally responsive to field

251 4, F16K 1300

Patent

active

057693897

ABSTRACT:
An apparatus for selectively controlling a flow of fluid includes a valve body, preferable comprised of a flexible tube having an inlet and an outlet. An actuable element, such as a shape memory alloy, is associated with the valve body. The shape memory alloy is responsive to actuation signals, heat or electrical signals, for changing its shape. When its shape changes, it causes a corresponding change in shape of the valve body thereby change a flow of fluid through the valve body.

REFERENCES:
patent: 3965925 (1976-06-01), Gooch
patent: 4660607 (1987-04-01), Griffith et al.
patent: 4903732 (1990-02-01), Allen
patent: 5217037 (1993-06-01), Bristol
patent: 5372350 (1994-12-01), Kawabe

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