Gravity switch

Details Gravity switch Gravity switch

1984-04-30

1985-04-23

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6152, 200 6183, 200DIG29, H01H 3502

Patent

active

045131830

ABSTRACT:
A gravity switch comprises a dielectric and a cup-shaped conductor pressed together in telescoping relationship to provide a hermetically sealed enclosure for a brass ball contact member rollable axially therein for selectively making or breaking an electrical contact between the sidewalls of the cup-shaped conductor and a point contact with a second conductor extending through the dielectric. The diameter of the ball is only slightly less than the diameter of the enclosure and is more than half the axial distance between the closed end of the cup-shaped conductor and the point contact of the second conductor in order to constrain the ball movement and reduce contact bounce. The various contact surfaces of the switch are silver plated and thoroughly cleansed to optimize current flow and maximize switch life within the hermetically sealed enclosure.

REFERENCES:
patent: 1971585 (1934-08-01), Soreng
patent: 2107570 (1938-02-01), Hobbs
patent: 2206094 (1940-07-01), Hobbs
patent: 2228456 (1941-01-01), Hobbs
patent: 2601142 (1952-06-01), Hubbard
patent: 3105729 (1963-10-01), Rosenthal et al.
patent: 3354434 (1967-11-01), Shlesinger, Jr.
patent: 4001185 (1977-01-01), Mitsui et al.
patent: 4042796 (1977-08-01), Zink
patent: 4467154 (1984-08-01), Hill

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