Filter sentry apparatus

Details Filter sentry apparatus Filter sentry apparatus

1991-02-19

1991-10-15

Nozick, Bernard

Communications: electrical

Condition responsive indicating system

Specific condition

340607, 55274, 55DIG34, 116268, 116DIG25, G08B 2100

Patent

active

050578219

ABSTRACT:
An apparatus including a housing secured to a filter web, wherein the housing includes a reciprocating rod directed orthogonally through the housing relative to the filter web, whereupon plugging of the filter web permits the rod to be directed through the housing to effect actuation of a switch therewithin. The rod mounts a magnet to track a plurality of contacts of a switch within the housing to effect actuation of an audible and visual alarm.

REFERENCES:
patent: 2734960 (1956-02-01), Reynolds
patent: 2789175 (1957-04-01), Mahr
patent: 3070676 (1962-12-01), Moseres
patent: 3077988 (1963-02-01), Anderson et al.

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