Selective bird feeder

Details Selective bird feeder Selective bird feeder

1994-07-13

1995-08-29

Price, Thomas

Animal husbandry

Feeding device

Powered

A01K 3901

Patent

active

054451094

ABSTRACT:
The selective bird feeder (10) has a bird feed container (12) and a bird feed container cover (70). The bird feed container (12) has an open top (24 ) and bird feed access openings ( 32 ) . The bird feed container cover has a roof (72) and outer walls (76, 79, 80, and 82). Bird perch assemblies (84, 86) are attached to the outer walls (78, 82). A spring follower (74) with a vertical bore (94) is integral with the bird feed container cover (70). A vertical tube (48) is secured to the bird feed container (12) and extends upward through the vertical bore (94). A cap (108) is attached to the vertical tube (48) by a pin (110). A coil compression spring (68), inside the vertical tube (48), exerts a force on an adjustable lower spring abutment (50) and spring abutment surfaces (104) and (106) on radial projections (96, 98) that are integral with the spring follower (74) and extend through vertical slots (100, 102) in the vertical tube. The coil compression spring (68) normally holds the roof (72) in sealing contact with a stop surface (122) on the cap (108). A large bird or other heavy animal on the bird feed container cover (70) or the bird perch assembly (84 or 86) compresses the coil compression spring (68), moves the bird feed container cover down and covers the bird feed access openings (32).

REFERENCES:
patent: Re32970 (1989-07-01), Furlani
patent: 2856898 (1958-10-01), Doubleday et al.
patent: 4541362 (1985-09-01), Dehls
patent: 4646686 (1987-03-01), Furlani
patent: 5048461 (1991-09-01), Wessner
patent: 5105765 (1992-04-01), Loken
patent: 5156112 (1992-10-01), Brown
patent: 5163382 (1992-11-01), Morrison
patent: 5195459 (1993-03-01), Ancketill
patent: 5289796 (1994-03-01), Armstrong

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