Luminous key top

Details Luminous key top Luminous key top

1991-04-11

1995-04-04

Weldon, Ulysses

Communications: electrical

Visual indication

Transparent or translucent indicator with means for blocking...

362293, 362 28, 200341, H01H 312, G01D 1128, G09G 316

Patent

active

054041333

ABSTRACT:
A luminous key top having display sections comprises: a display member having a plurality of protrusions corresponding to the respective external configurations of the display sections and formed of a transparent or a translucent synthetic resin; an external member consisting of an opaque synthetic resin and formed integrally on the display member except for the respective top surfaces of the protrusions; first light-transmitting color layers formed by printing on the respective top surfaces of the protrusions; and second light-transmitting color layers formed by printing on the first light-transmitting color layers.

REFERENCES:
patent: 3956745 (1976-05-01), Ellis
patent: 4022993 (1977-05-01), Shahuck
patent: 4878107 (1989-10-01), Hopper
patent: 4937408 (1990-06-01), Hattori et al.
patent: 5029046 (1991-07-01), Kameda
patent: 5120290 (1992-06-01), Moriike

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