Device for actuating a control member

Details Device for actuating a control member Device for actuating a control member

1995-06-07

1997-04-29

Look, Edward K.

Valves and valve actuation

Permanent or constantly energized magnet actuator

25112901, 25112911, 251285, F16K 3108

Patent

active

056241003

ABSTRACT:
A throttle valve in a gas conduit (3), such as for example an intake of an internal-combustion engine, is pivotable from an idling position into operating positions by means of a valve shaft (5), the valve shaft (5) carrying an actuator body formed by a magnetised rotor body (9) which, via an air gap (10), cooperates with pole shoes (15) of a stationary excitation section (11), which is electrically energisable by a pick-up, which pole shoes surround said rotor body externally, the excitation section (11) comprising a U-shaped stator whose limbs (12a, 12b) form the pole shoes (15), which cooperate with the permanent-magnet rotor body (9) at the air gap, in such a manner that the rotor body (9) is subjected to magnetic torques which tend to pull said rotor body into a well-defined rest position, in order to thereby return the throttle valve (4) in a direction opposite to the opening direction into a well-defined rest position in the non-energised condition.

REFERENCES:
patent: 2097409 (1937-10-01), Wertz
patent: 4200596 (1980-04-01), Iiyama et al.
patent: 4580761 (1986-04-01), Silcox et al.
patent: 5139230 (1992-08-01), Lester

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