Deposit and collection receptacles – Letter boxes – Signals
Patent
1978-07-05
1980-02-05
Zugel, Francis K.
Deposit and collection receptacles
Letter boxes
Signals
232 34, A47G 2912
Patent
active
041868706
ABSTRACT:
A flag assembly includes a lateral projection at its lower end enabling flag raising by fingertip pressure. A spring biased rod includes an arm member contactable with the projection during door opening to automatically lower the flag. A link associated with the rod moves past the door hinge pin axis to lock the door open and also to close the door after initial manual door closing movement.
REFERENCES:
patent: 2579877 (1951-12-01), Stone
patent: 2811306 (1957-10-01), Kalmoe
patent: 2849176 (1958-08-01), McMinn
patent: 2874896 (1959-02-01), Hickman
patent: 3144986 (1964-08-01), Hendrickson
patent: 3163356 (1964-12-01), Joehuk
Givnan, Jr. James D.
Zugel Francis K.
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