Momentary rotating mercury switch

Details Momentary rotating mercury switch Momentary rotating mercury switch

1990-03-28

1991-07-23

Recla, Henry J.

Electricity: circuit makers and breakers

Liquid contact

Tiltable or rotatable

200224, 200 6146, 200 6147, H01H 2922

Patent

active

050345826

ABSTRACT:
A device for the detection of rotation having a hollow, pillbox shaped cylinder, a solid baffle positioned within the cylinder for directing the flow of mercury, at least two metal contacts within the cylinder, a non-mercury center rod contact, and mercury contained within the cylinder. The baffle is attached to a wall of the cylinder and extends radially inward therefrom. The baffle extends for a distance approximately equal to a radius of the cylinder. The first and second metal contacts are positioned on opposite sides of the baffle. A third metal contact is attached to the cylinder and extends inwardly therefrom distal the first and second metal contacts. The non-mercury center rod is positioned along a longitudinal axis of the cylinder.

REFERENCES:
patent: 489266 (1893-01-01), Rabbidge
patent: 1880832 (1932-10-01), Cramblet
patent: 1951162 (1934-03-01), Moos
patent: 2744175 (1956-05-01), Moore
patent: 2830159 (1958-04-01), Varner
patent: 2849550 (1958-08-01), Olmer et al.
patent: 4536727 (1985-08-01), Romano

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