Reflex device with marking behind cover layer

Details Reflex device with marking behind cover layer Reflex device with marking behind cover layer

1978-09-26

1981-04-28

McCamish, Marion

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428 66, 428 67, 428 68, 428194, 428203, 428204, 428913, G02B 5128

Patent

active

042646650

ABSTRACT:
A reflex device has a marking or other particular distinctive feature provided on a carrier which is located behind a covering layer having a light reflectivity and a light transmission varying in response to the direction of incidence of incident light. The covering layer offers the highest reflectivity and the lowest transmission to light having a direction of incidence substantially perpendicular to said layer.

REFERENCES:
patent: 1475430 (1923-11-01), Curwer
patent: 2522812 (1950-09-01), Bonnet
patent: 2951419 (1960-09-01), Lemelson
patent: 3357772 (1967-12-01), Rowland
patent: 3407523 (1968-10-01), Winston
patent: 3768434 (1973-10-01), Pinter
patent: 3853675 (1974-12-01), Edwards
patent: 3935359 (1976-01-01), Rowland
patent: 3965598 (1976-06-01), Avery
patent: 3970033 (1976-07-01), Linder et al.
patent: 3973342 (1976-08-01), Gubela
patent: 4025674 (1977-05-01), Mizuochi
patent: 4082426 (1978-04-01), Brown
patent: 4127693 (1978-11-01), Lemelson
patent: 4138515 (1979-02-01), Dial

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