Warning ashtray
US4725998A · kind A · utility
3Cited by
13References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1986 |
| Grant date | Feb 16, 1988 |
| Priority date | — |
| Expiry date | Dec 12, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04B47/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A completely automatic warning ashtray for smokers is disclosed. The ashtray is responsive to the natural motions of a smoker, and indicates to the smoker when it is time to dispose of accumulated ash on a lit cigarette. Because of its automatic operation, the user need not operate any manual controls in order to accrue the advantages of the invention's use. In addition, the ashtray may be provided with a visual indicating means which indicates to the user that a timing cycle is in progress, and a time of day clock may also be visible from the outside of the ashtray.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.