Magnetically-coupled actuating valve assembly

Details Magnetically-coupled actuating valve assembly Magnetically-coupled actuating valve assembly

2007-01-09

2007-01-09

Bastianelli, John (Department: 3751)

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

Reexamination Certificate

active

11153278

ABSTRACT:
A magnetically-coupled actuating valve assembly. The actuating valve can be used to control the action of an actuator, such as a hydraulic or pneumatic cylinder. The valve assembly is especially well-suited to use with a damping cylinder of an electronically controlled prosthetic knee. A drive motor is coupled to and actuates a valve body portion of the assembly by means of magnetic attraction and, therefore, the valve assembly operates without the need to physically couple the drive motor to the valve body. The design of the present invention can reduce or eliminate working fluid leaks typically associated with a physical coupling. The design of the present invention may also obviate the need to submerge the drive motor in the working fluid, which typically reduces motor efficiency and may pose a fire hazard.

REFERENCES:
patent: 4072800 (1978-02-01), Gammer
patent: 4809742 (1989-03-01), Grau
patent: 5248570 (1993-09-01), Meier
patent: 5931142 (1999-08-01), Gerling
patent: 6352144 (2002-03-01), Brooks

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