Signals and indicators – Indicators
Patent
1993-03-15
1994-06-28
Cuchlinski, Jr., William A.
Signals and indicators
Indicators
116201, 116203, G01D 1100, G01D 1500, G01L 500
Patent
active
053237293
ABSTRACT:
A crush indicating device is disclosed which is designed to be attached to an object or a container for the purpose of indicating whether the object or container subsequently is subjected to excessive force, acceleration or shock. The indicator device has a contrasting agent reservoir filled with a contrasting agent, an absorbing wick and a compressible wall. The compressible wall extends between the wick and the reservoir, holding them in a fixed apart relationship while the wall is uncompressed. Application of force to the device compresses the wall and brings the wick into contact with the reservoir. The wick absorbs contrasting agent from the reservoir, resulting in a marked visible change in the wick which signifies that excessive force has been applied to the device. A base is located at one end of the wall, supporting the reservoir and providing means to attach the device to an object or container. A transparent cover sheet is located at the opposite end of the wall.
REFERENCES:
patent: 2976732 (1961-03-01), Hautly
patent: 3221428 (1965-12-01), Fischler et al.
patent: 3369521 (1968-02-01), Meeder, Jr.
patent: 3515091 (1970-06-01), Smith
patent: 3782202 (1974-01-01), Boardman
patent: 3954011 (1976-05-01), Manske
patent: 4125085 (1978-11-01), Rubey
patent: 4793717 (1988-12-01), Manske
Cuchlinski Jr. William A.
Mantooth Geoffrey A.
Media Recovery, Inc.
Worth W. Morris
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