Recording apparatus

Details Recording apparatus Recording apparatus

2006-11-30

2008-12-02

Friedhofer, Michael A (Department: 2832)

Electricity: circuit makers and breakers

Electric switch details

Indicators

C200S314000, C200S317000

Reexamination Certificate

active

07459648

ABSTRACT:
A device is provided which includes a substrate arranged in an interior thereof having a light emitting element positioned on an upper surface of the substrate; and a push button assembly disposed in an exterior structure of the device above the emitting element. The button assembly includes a cylindrical light guide for receiving/guiding light to an annular display part disposed on an upper portion of the light guide. The light guide is further defined by a lower end, and an inner and outer wall. A portion of the outer wall proximate to the lower end has a tapered surface portion. A push button part is movably disposed within the light guide. The emitting element is positioned coincident with a center axis of the light guide. Light emitted by the element is received by the light guide, reflected by the tapered portion, and guided towards the display part.

REFERENCES:
patent: 6224221 (2001-05-01), Glienicke
patent: 6522147 (2003-02-01), Pickard et al.
patent: 6590147 (2003-07-01), Kassabian
patent: 6855899 (2005-02-01), Sotome
patent: 7129432 (2006-10-01), Fujii et al.
patent: 7193170 (2007-03-01), Katayama et al.
patent: 7244898 (2007-07-01), Kim
patent: 7253369 (2007-08-01), Fu et al.
patent: 2000-280585 (2000-10-01), None
patent: 2003-094765 (2003-04-01), None

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