Valves and valve actuation – Electrically actuated valve – Rotary electric actuator
Patent
1991-03-27
1992-03-17
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Rotary electric actuator
251205, 251901, 13762565, 91504, 92 122, 92 71, 417222R, F16K 3104, F16K 706
Patent
active
050961578
ABSTRACT:
A novel planetary roller type flow control valve, which can precisely control a flow rate and has a small friction, is provided. The planetary roller type flow control valve comprises a plurality of planetary rollers having different diameters from one another and being externally contiguous to a roller serving also as an input shaft, a ring being internally contiguous to the same planetary rollers and having a predetermined width in its axial direction, a housing fitting around the same ring with its inner circumference partly kept in contact with the outer circumference of the same ring and held coaxial and liquid-tight with respect to the above-mentioned roller serving also as an input shaft, a fluid inlet provided at one angular position of the inner circumference of the same housing so as to be interceptable by the predetermined width of the above-mentioned ring, and a fluid outlet provided at another angular position of the inner circumference of the same housing so as to be interceptable by the predetermined width of the aforementioned ring.
REFERENCES:
patent: 4161184 (1979-07-01), Traut
patent: 4718453 (1988-01-01), Ahrens
Mitsubishi Jukogyo Kabushiki Kaisha
Rosenthal Arnold
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