Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1975-11-14
1976-11-02
Caldwell, John W.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
200 6145R, 219506, 236 94, 337411, 337402, 3402271, 432 32, G08B 1900
Patent
active
039900746
ABSTRACT:
An apparatus activates an alarm for a kiln operator when the heat and temperature provided by a kiln reach a predetermined level thereby activating a kiln shut-off weight and switch. The kiln shut-off weight rotates to engage a rod coupled to a switching means for activating an alarm.
REFERENCES:
patent: 2675600 (1954-04-01), Dawson
patent: 3178539 (1965-04-01), Crawford et al.
patent: 3287530 (1966-11-01), Dawson
Caldwell John W.
Crosland Donnie L.
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