Sewer line restriction alarm placed in clean out plug

Details Sewer line restriction alarm placed in clean out plug Sewer line restriction alarm placed in clean out plug

1989-07-25

1991-04-09

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340605, G08B 2100

Patent

active

050068334

ABSTRACT:
A restricted flow alert for use in the access arm of the main clean-out plug location in a commercial or residential sewage system includes a diaphragm which moves in response to the presence of to close a switch and actuate an alarm. A pneumatic time delay prevents the alarm from being actuated in response to transient flow conditions in the sewer line and allows operation of the alarm at any physical orientation relative to the axis of the body of the restricted flow alert.

REFERENCES:
patent: 1164882 (1915-12-01), Sommer
patent: 2761037 (1956-08-01), Thomas et al.
patent: 3757316 (1973-09-01), Fiorenzo
patent: 3774187 (1973-11-01), Windham
patent: 4091365 (1978-05-01), Allen
patent: 4392128 (1983-07-01), Young et al.
patent: 4546346 (1985-10-01), Wave et al.

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