Firearms – Indicators
Patent
1989-03-17
1991-01-15
Jordan, Charles T.
Firearms
Indicators
42106, 73167, F41C 3104
Patent
active
049843818
ABSTRACT:
A technique for evaluation of various firearm and projectile wear parameters. A debris collector constructed in accordance with the invention includes a receptacle coated with a collecting medium capable of trapping the particles exhausted from a firearm. The receptacle is formed of a fairly ductile material, such as metal foil, so that it is easily penetrated when a projectile is fired into the apparatus. The preferred collecting medium is a polymer blend of white petrolatum and paraffin wax, which exhibits ideal receptivity to impinging particles, while retaining excellent solubility, temperature stability, and shelf life. An appropriate container serves to support and enclose the collecting medium.
The collecting medium is then removed from the receptacle for further analysis. It is liquefied by dissolving it in a suitable carrier fluid such as by applying heat or a solvent. The result is a clear liquid containing suspended wear particles. The clear liquid can be visually inspected. However, other techniques such as ferrography are preferred.
REFERENCES:
patent: 3932748 (1976-01-01), Schmitz
patent: 4047814 (1977-09-01), Westcott
patent: 4448887 (1984-05-01), Kauffman et al.
patent: 4532815 (1985-08-01), Gee et al.
Institute Guilfoyle
Jordan Charles T.
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