Electromagnetic device for controlling the supply of current to the electric starter motor of an internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 25, 1994
Grant Date -
N/A
app pub date -
Jun 1, 1993
filing date -
Jun 10, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The device comprises two fixed contacts, a movable assembly coupled to the central portion of a movable contact the free ends of which can cooperate with the said fixed contacts, and a control electromagnet comprising a solenoid and a movable core displaceable from an initial rest position to a final position in which it strikes a stop element carrying with it the movable assembly so as to bring the end of the movable contact against the fixed contacts before reaching the final position. The movable contact can flex resiliently like a beam under the effect of its engagement with the fixed contacts. When the core strikes the stop element, the fixed contacts oscillate about their normal working positions. The movable contact is made in such a way that, as the fixed contacts start to oscillate its free ends follow the movements of the fixed contacts, its acceleration in its own mode of vibration being greater than the acceleration of the fixed contacts and its amplitude of oscillation being greater than the amplitude of oscillation of the fixed contacts.
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