Deposit and collection receptacles – Letter boxes – Signals
Patent
1979-07-20
1981-04-21
Zugel, Francis K.
Deposit and collection receptacles
Letter boxes
Signals
A47G 2912
Patent
active
042628393
ABSTRACT:
A mail delivery indicator in which an arm connected to the door of the mailbox triggers the device when the door is opened so that a banner is raised and prominently displayed to indicate that mail has been delivered. The indicator is reset after the mail has been removed by exerting downward pressure on the banner structure. The indicator can be installed on any conventional mailbox having a door which tips downward when opened. Since the indicator is positioned away from the door of the mailbox, there is little or no danger of a person opening the door being struck when the banner is raised.
REFERENCES:
patent: 686694 (1901-11-01), Adams
patent: 834122 (1906-10-01), Gordon
patent: 918899 (1909-04-01), Oliver
patent: 1026338 (1912-05-01), Bailey
patent: 2217310 (1940-10-01), Fatur
patent: 2808982 (1957-10-01), Armstrong
patent: 2834539 (1958-05-01), Carey
patent: 3291386 (1966-12-01), Van Fleet
patent: 3675845 (1972-07-01), Scheerer
patent: 3968928 (1976-07-01), Caldwell
Hobbs Marmaduke A.
Zugel Francis K.
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