Filter inspection apparatus

Details Filter inspection apparatus Filter inspection apparatus

1992-10-13

1994-05-10

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250341, 2503601, G01N 2188

Patent

active

053110234

ABSTRACT:
A filter inspection apparatus for inspecting filters comprises a support frame for supporting a substantially tubular filter having inner and outer surfaces for rotation about its axis, a source of EMR for directing radiation along one of the inner and outer surfaces of a filter, an EMR sensing unit mounted adjacent to the other of the surfaces for sensing EMR passing through the filter and generating a signal, and an indicator responsive to the signal for indicating passage of EMR through the filter.

REFERENCES:
patent: 2516680 (1950-07-01), Culpepper
patent: 3800157 (1974-03-01), Nichols
patent: 3840402 (1974-10-01), Tobin, III
patent: 4048500 (1977-09-01), Moore
patent: 4279508 (1981-07-01), Everroad
patent: 4704144 (1987-11-01), LeBlanc
patent: 4808234 (1989-02-01), McKay
patent: 4842624 (1989-06-01), Barton
patent: 5143529 (1992-09-01), Means, Jr.

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