Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1978-10-02
1981-04-14
Swann, III, Glen R.
Communications: electrical
Condition responsive indicating system
Specific condition
74 8914, 74 8917, 200 6151, G08B 2100
Patent
active
042622891
ABSTRACT:
The present alarm has a pendulum-operated switch apparatus including a pair of closely spaced, flexible, steel strips extending down from an insulation housing. These strips carry closely spaced, confronting switch contacts below the housing. One of these strips carries a pendulum weight at its lower end. To adjust the sensitivity of the switch, the other strip is adjustable toward the weighted strip by a metering pin operated by an adjusting screw through a gear reduction. Conductive rods extend into the housing to provide electrical connections to the upper ends of the strips. Each rod has a non-circular enlargement engaging the outer face of the corresponding strip and an inner end which is deformed laterally outward against the inner face of the strip.
REFERENCES:
patent: 2407122 (1946-09-01), Young
patent: 2947830 (1960-08-01), Goss
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