Monitor for gas piping system

Details Monitor for gas piping system Monitor for gas piping system

1977-08-08

1978-07-11

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

340605, 340327, G08B 2100

Patent

active

041005376

ABSTRACT:
Apparatus for monitoring the pressure in a gas line and providing a visual and audible indication of a high or low pressure condition, the gas line having a pressure sensor for generating high and low pressure signals, comprising a visual indicator responsive to the high pressure signal for providing a high pressure visual indication, a visual indicator responsive to the low pressure signal for providing a low pressure visual indication, a system normal visual indicator which is normally maintained in an "on" condition, an audible alarm, circuit means responsive to either of the high or low pressure signals for turning off the system normal visual indicator and for activating the audible alarm, and a manual switch for deactivating the audible alarm.

REFERENCES:
patent: 1219723 (1917-03-01), Gracey et al.
patent: 1855321 (1932-04-01), Shackleton
patent: 1986479 (1935-01-01), Lowe et al.
patent: 2004769 (1935-06-01), Shanklin
patent: 2129261 (1938-09-01), Chase et al.
patent: 2723388 (1955-11-01), Jacobs
patent: 2735081 (1956-02-01), Hosford
patent: 3184958 (1965-05-01), Eaton
patent: 3336584 (1967-08-01), Kaiser
patent: 3350704 (1967-10-01), Kessler

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