Apparatus for detecting when birds are in a birdhouse
US5483922A · kind A · utility
4Cited by
4References
5Claims
0Family size
Inventor
Key dates
| Filing date | Mar 29, 1995 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Mar 29, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K31/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for detecting when birds are in a birdhouse with a heat sensor and illuminating a lamp to give a visual indication of the presence of the bird. A second portion of the circuit gives a visual indication when the bird enters or leaves the birdhouse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.