Squirrel proof bird feeder
US5690056A · kind A · utility
Inventor
Key dates
| Filing date | Aug 8, 1996 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Aug 8, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01K39/0113
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A squirrel proof bird feeder having a cable for suspending the bird feeder from a tree, an open circular upper platform, an annular feeder suspended from the platform and a trap above a free lower end portion of the cable between the platform and the feeder. The open circular platform and cable passing through the platform mislead squirrels into believing that they can descend on the cable through the platform onto the trap and descend from the trap to reach the feeder. When a squirrel contacts the trap, one or more of the resiliently mounted segments rotates to eject the squirrel either off of the periphery or through the center of the trap. The feeder has an annular portion for storing birdseed and a lower open tray portion for feeding a portion of the birdseed to birds. The lower tray is automatically replenished by birdseed which is stored in the annular portion of the feeder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.