Mail box signal
US4901914A · kind A · utility
1Cited by
6References
8Claims
0Family size
Inventor
Key dates
| Filing date | Oct 27, 1988 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Oct 27, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47G2029/12105
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A mail box or similar container having a self cancelling signal indicator which is activated by the opening of the mail box door. The signal is a crankshaft which has on each end of the crankshaft a crank arm, each arm being perpendicular to said crankshaft and in an offset direction to the other crank arm, one of said crank arms having at the end opposite said crankshaft a combination weight and position indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.