Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1986-03-18
1987-07-07
Birmiel, Howard A.
Communications: electrical
Condition responsive indicating system
Specific condition
340689, 200 6152, 200 6145R, H01H 3502, H01H 3514
Patent
active
046790330
ABSTRACT:
A new structure of vibration sensor mainly comprising two metal conducting plates on its body, one of which is installed with an adjusting screw and the other with a fixing screw connecting to a vibrating spring which is connected to a hopper conductor at the other end. The adjusting screw is located in such a manner that its tip is in the middle of the hopper conductor, so that when the vibrating spring detects shock signals it causes contact between the hopper conductor and the adjusting screw.
REFERENCES:
patent: 3070675 (1962-12-01), Domek
patent: 3504533 (1970-04-01), Rodewalt
patent: 3710051 (1973-01-01), Orlando
patent: 3731022 (1973-05-01), Loftus
patent: 3786469 (1974-01-01), Massaro
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