Solenoid with movement dampener

Details Solenoid with movement dampener Solenoid with movement dampener

1995-05-12

1998-01-20

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335242, H01F 718

Patent

active

057105324

ABSTRACT:
A solenoid having a controlled rate of motion is provided. The solenoid includes a housing having a channel disposed therein, a coil disposed around the channel for providing an electromagnetic force in response to a current being supplied therethrough, and a plunger disposed within the channel and movable between a first position and a second position in response to the presence or absence of the electromagnetic force. A dampener is linked to the plunger which creates an atmospheric pressure differential as the plunger moves to one or both of the first position or the second position which pressure differential acts to slow the rate of movement of the plunger.

REFERENCES:
patent: 1896904 (1933-02-01), Laven
patent: 4896127 (1990-01-01), Hida
patent: 5507488 (1996-04-01), Eddy et al.

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