Signals and indicators – Indicators – Chemically activated type
Patent
1996-02-13
1998-03-17
Cuchlinski, Jr., William A.
Signals and indicators
Indicators
Chemically activated type
116276, 116DIG25, 738665, G01N 3122
Patent
active
057274983
ABSTRACT:
A retractable indicator assembly 10 may be mounted on a container C which transmits air through the container and removes deleterious gases with an activated charcoal medium M in the container. An elongate indicator housing 12 has a chamber 20 therein. A male adaptor 14 has external threads 16 for sealing engagement with the container. A plug 40 is provided at the upper end of the housing 12. Housing 12 includes a transparent wall portion 28 for viewing at least a portion of the chamber 20. A litmus indicator 42 is moveable by a retractable rod 54 from a retracted position within the container to an extended position within the chamber 20 of the housing 12. An outer housing 64 is secured to the upper end of the rod 54, and protects the indicator housing 12 while the litmus indicator 42 is in its normally retracted position. The assembly may be manually manipulated between its extended position wherein the litmus indicator may be viewed through the transparent wall 28 of the indicator housing 12, and a retracted position wherein the outer housing 64 encloses the indicator housing 12 and engages the exterior of the container C.
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Dominquez Victor
Gamboa Ronald J.
Hackler George R.
Cate James M.
Cuchlinski Jr. William A.
The United States of America as represented by the Administrator
Worth Willie Morris
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