Chemistry: analytical and immunological testing – Process or composition for determination of physical state... – Leak detection
Patent
1992-05-28
1999-11-02
Alexander, Lyle A.
Chemistry: analytical and immunological testing
Process or composition for determination of physical state...
Leak detection
436 1, 436169, 422 58, G01N 3348
Patent
active
059768819
ABSTRACT:
A detection device for testing gloves or other protective clothing or equipment for breakthrough by a contaminant includes a pad carrying a reagent which is responsive to the contaminant for producing a color change. A barrier layer covers the reverse side of the pad to prevent escape of chemicals therefrom and an adhesive strip is secured to the barrier layer for attachment of the pad either to the skin of the user or to the inside of the glove or other clothing so that the obverse side of the pad is adjacent to the inside of the glove. In one embodiment the pad is impregnated with the reagent which directly reacts with the contaminant to produce a color change. In another embodiment, plural reagents are carried respectively in separate regions of the pad and, after exposure to the contaminant, a carrier solvent is applied to the pad which brings the reagents into intimate contact for cooperation to produce the color change. In a third embodiment a substrate carries microcapsules of ink contained in shells soluble in a contaminant solvent, the pad also having a storage region for absorbing and storing the contaminant for later analysis. The obverse side of the pad may be covered with a semi-permeable barrier selectively permeable to the contaminant but impermeable to the reagents.
REFERENCES:
patent: 1623510 (1927-04-01), Waggoner
patent: 2156880 (1939-05-01), Slomon
patent: 2708896 (1955-05-01), Smith et al.
patent: 2762711 (1956-09-01), Zopf, Jr.
patent: 3516846 (1970-06-01), Matson
patent: 3520124 (1970-07-01), Myers
patent: 3552929 (1968-01-01), Fields et al.
patent: 3672351 (1972-06-01), Ubersax et al.
patent: 4473079 (1984-09-01), Jasper et al.
patent: 4643588 (1987-02-01), Postle et al.
patent: 4873147 (1989-10-01), Jansen et al.
patent: 4910803 (1990-03-01), Cukier
patent: 4925667 (1990-05-01), Fellows et al.
patent: 5140986 (1991-08-01), Klingner
Alexander Lyle A.
Colormetric Laboratories, Inc.
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