Pointer type indicator having means to improve dial visibility

Details Pointer type indicator having means to improve dial visibility Pointer type indicator having means to improve dial visibility

2005-03-08

2005-03-08

Ward, John Anthony (Department: 2875)

Illumination

Illuminated scale or dial

C362S029000, C362S271000, C362S489000, C362S555000

Reexamination Certificate

active

06863411

ABSTRACT:
A pointer type indicator having a dial plate (30) with indexes corresponding to measured values and a pointer (10) for pointing to respective indexes of the dial plate (30). The pointer (10) includes a pointing portion (103) to be illuminated by light emitted from a pointer light source (102), and light guides (103d, 101d, 101e, 104) for guiding a part of light emitted from the pointer light source (103) to illuminate a limited area of the dial plate (30) behind the pointing portion (103).

REFERENCES:
patent: 2831453 (1958-04-01), Hardesty
patent: 4252078 (1981-02-01), Fukasawa et al.
patent: 4323951 (1982-04-01), Pasco
patent: 5142453 (1992-08-01), Ohta et al.
patent: 5523922 (1996-06-01), Kato
patent: 5631448 (1997-05-01), Rabinowitz et al.
patent: 6032608 (2000-03-01), Oreans et al.

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