Valves and valve actuation – With non-fluid retarder
Patent
1994-08-12
1995-06-27
Hepperle, Stephen M.
Valves and valve actuation
With non-fluid retarder
188268, 25112916, F16K 3106
Patent
active
054273528
ABSTRACT:
The electromagnetic valve includes a magnetic housing (11, 12, 13), an electromagnetic coil (15) received in the magnetic housing and a plurality of movable parts including a movable magnetic armature (23,36) and a movable valve stem device (58) for valve opening and closing. To provide a damping of the motion of the movable parts, at least one of the movable parts (23, 36, 58), advantageously a part of the armature, is provided with a hollow compartment (72) and a damping mass (74) at least partial filling the hollow compartment (72). The volume of the hollow compartment (72) is greater than the volume of the damping mass (74) so that motions of the magnetic armature and other parts are damped by the frictional and impact losses occurring in the damping mass (74).
REFERENCES:
patent: 2375818 (1945-05-01), Peters
patent: 2868494 (1959-01-01), Kearns et al.
patent: 2963259 (1960-12-01), Heyer et al.
patent: 3110262 (1963-11-01), West
patent: 3198996 (1965-08-01), Vollprecht
patent: 3440931 (1969-04-01), Eastin
patent: 4481974 (1984-11-01), Schmitt
patent: 4535816 (1985-08-01), Feder et al.
Hepperle Stephen M.
Robert & Bosch GmbH
Striker Michael J.
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