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US 4,790,861 AGranted
Ashtray
AssigneeNEC Automation, Ltd.
InventorsMinoru Watai, Yasukazu Nishimuro, Koichi Iwabuchi
Life of this patent
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Abstract
An ashtray having a small electrode and a large electrode. A high voltage is applied between the two electrodes so that ions are produced to ionize smoke particles, air is caused to flow from the small electrode to the large electrode and the ionized smoke particles adhere to the large electrode. An auxiliary electrode is provided to connect electrically to the large electrode.
Claims3
An ashtray comprising an ash reception plate;
- a small electrode provided over said ash reception plate at a distance therefrom;
- an auxiliary electrode opposed to said small electrode;
- a large electrode electrically coupled to said auxiliary electrode, disposed below said small electrode, alongside said auxiliary electrode and above said ash reception plate;
- and a means for applying a high voltage between said small electrode and said auxiliary electrode and between said small electrode and said large electrode.
1 more element
Dependencies are inferred from the claim text.