Miniature acceleration switch

Details Miniature acceleration switch Miniature acceleration switch

1987-09-28

1988-05-24

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Change of inclination or of rate of motion responsive

200 6153, H01H 3514

Patent

active

047467746

ABSTRACT:
This miniature acceleration switch has a cylindrical metal mass movable axially in a cylindrical chamber in a cylindrical metal shell. The chamber is filled with an inert gas to inhibit corrosion. The mass has a frustoconical end section inserted into a metal coil spring engaged at one end on an annular shoulder at the wider end of the section, and engaged at its other end in an annular recess formed in a metal ring of a header closing and welded to the other end of the chamber to seal it hermetically. The header has a glass insulator bonded to the ring and carries at its center a circuit lead projecting into the chamber to be contacted by the mass when it moves against a spring load in response to a predetermined force of acceleration.

REFERENCES:
patent: 2424390 (1947-07-01), Ferris
patent: 3035521 (1962-05-01), Hynard
patent: 3649787 (1972-03-01), Kasabian
patent: 3731022 (1973-05-01), Loftus
patent: 3889130 (1975-06-01), Breed
patent: 3889649 (1975-08-01), Jenkins
patent: 3965314 (1976-06-01), Sasaya et al.
patent: 4210789 (1980-07-01), Ushiku et al.

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