Control knob with symbol display

Details Control knob with symbol display Control knob with symbol display

2007-08-14

2007-08-14

Gutierrez, Diego (Department: 2859)

Signals and indicators

Indicators

Operator movable

C116S309000, C116S286000, C362S023000, C362S029000, C200S316000

Reexamination Certificate

active

11392038

ABSTRACT:
Control, comprising a knob (12a) with a prism (20) that has an axial part (22) located centrally in the knob, with a symbol display surface (28) at an external end (30) of the knob, and a part (24) arranged at an angle to the central part for receiving incident light from a symbol illuminated by a light source (34), which symbol is on a stationary disc element (32) located at an end of the knob (12a) facing away from the external end (30) and concentric with this, in order to be able to display different symbols by optical projection towards the symbol display surface (28) depending upon the rotational position of the knob (12a).

REFERENCES:
patent: 2334479 (1943-11-01), Creager
patent: 2681634 (1954-06-01), Polley
patent: 2693165 (1954-11-01), Appleman
patent: 2885992 (1959-05-01), Roberts et al.
patent: 3404657 (1968-10-01), Zmuda
patent: 3619591 (1971-11-01), Korski
patent: 3619594 (1971-11-01), Morez
patent: 3636915 (1972-01-01), Ruppert
patent: 5335148 (1994-08-01), Tominaga
patent: 6178916 (2001-01-01), Snider
patent: 6348772 (2002-02-01), May
patent: 6744374 (2004-06-01), Kuenzner
patent: 87 02 558 (1987-02-01), None
patent: 2 376 284 (2002-12-01), None

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