Apparatus using optical fibers for inspecting slide fastener ele

Details Apparatus using optical fibers for inspecting slide fastener ele Apparatus using optical fibers for inspecting slide fastener ele

1988-08-05

1989-08-08

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250561, 29410, 29705, 29769, B21D 5352

Patent

active

048555924

ABSTRACT:
Apparatus for inspecting irregular coupling elements from continuously running slide fastener chains is essentially comprised of a light source including a light emitter and a light receptor, an optical fiber extending from the light source and having a leading end arranged to face a row of coupling elements along their rounded corners, and a comparator connected to the light source. The light emitter cooperates with the optical fiber in emitting light rays onto the coupling elements, and the light receptor receives via the optical fiber light rays reflected from the rounded corners and converts the reflected rays to electrical signals. The comparator successively compares the signals to the reference standard to detect irregular coupling elements.

REFERENCES:
patent: 4365403 (1982-12-01), Ooura
patent: 4443924 (1984-04-01), Osaki
patent: 4457062 (1984-07-01), Osaki
patent: 4604783 (1986-08-01), Kojima et al.
patent: 4619141 (1986-10-01), Yoshieda
patent: 4625375 (1986-12-01), Osaki

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