Valves and valve actuation – Electrically actuated valve – Including solenoid
Patent
1994-08-12
1996-08-20
Hepperle, Stephen M.
Valves and valve actuation
Electrically actuated valve
Including solenoid
251 50, 25112908, F16K 3108
Patent
active
055471650
ABSTRACT:
An electromagnetically operated proportional valve, in particular a pressure regulating valve for automatic transmission of motor vehicles has a magnet housing, a magnet coil and stationary flux guiding elements received in the magnet housing, a magnet armature, a valve member with which the magnet armature cooperates, stationary structural elements forming at least one auxiliary air gap and a working air gap in a magnetic circuit, the valve member cooperating with the stationary structural elements through the at least one auxiliary air gap and the at least one working air gap, at least one of the structural elements cooperating in the working air gap being at least partially provided on at least one surface facing a corresponding another structural element with at least one nonmagnetic coating.
REFERENCES:
patent: 1754740 (1930-04-01), Clarkson
patent: 2374895 (1945-05-01), Ray
patent: 2938703 (1960-05-01), Dietz
patent: 4715332 (1987-12-01), Kreuter
patent: 4971116 (1990-11-01), Suzuki et al.
patent: 5192048 (1993-03-01), Wakeman
patent: 5211341 (1993-05-01), Wieczorek
patent: 5240227 (1993-08-01), Sich
Brehm Werner
Deeg Markus
Keuerleber Horst
Koepff Georg
Hepperle Stephen M.
Robert & Bosch GmbH
Striker Michael J.
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