Squirrel-proof bird feeding apparatus and method
US6612257B2 · kind B2 · utility
2Cited by
16References
92Claims
0Family size
Inventor
Key dates
| Filing date | Jul 25, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jul 25, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K39/0113
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A bird feeder includes a vessel for holding seeds. A removable access tunnel external to the vessel is coupled thereto at a seed opening in the vessel. The access tunnel, as well as a bar across a bottom portion of the access tunnel opening restricts access to seeds by other than birds. A removable seed cover for the opening held on by the access tunnel is made of a flexible material and includes a seed opening sized and shaped to restrict a number of seeds extractable on a given attempt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.