Shock insensitive tilt switch with floating spherical restrictor

Details Shock insensitive tilt switch with floating spherical restrictor Shock insensitive tilt switch with floating spherical restrictor

1992-06-09

1993-03-30

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6152, 200190, 200220, 200230, H01H 3514

Patent

active

051986280

ABSTRACT:
A tilt switch comprises a housing forming a cylindrical inner chamber and having two electric terminals extending through an end wall of the chamber. A mercury mass of less volume than the chamber is disposed within the chamber and is arranged to electrically interconnect the terminals when the switch is in a first position relative to vertical, and to break the electrical contact when the switch is tilted to a second position relative to vertical. A spherical body of less density than the liquid and including a non-electrically conductive outer surface floats upon a surface of the liquid and is pushed upwardly against a surface of the chamber. The spherical body has a smaller diameter than the diameter of the chamber to define a restriction passage which inhibits the flow of liquid when the switch is subjected to shock.

REFERENCES:
patent: 1907402 (1933-05-01), Fedor
patent: 2273921 (1942-02-01), Bain
patent: 3184566 (1965-05-01), Kleinpeter
patent: 3240900 (1966-03-01), Halff et al.
patent: 3673524 (1972-06-01), Lowry
patent: 3914567 (1975-10-01), Reinnagel
patent: 4099040 (1978-07-01), Bitko
patent: 4135067 (1979-01-01), Bitko

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