Mail box signal

Details Mail box signal Mail box signal

1988-10-27

1990-02-20

Gibson, Jr., Robert W.

Deposit and collection receptacles

Letter boxes

Signals

232 34, B65D 9100

Patent

active

049019147

ABSTRACT:
A mail box or similar container having a self cancelling signal indicator which is activated by the opening of the mail box door. The signal is a crankshaft which has on each end of the crankshaft a crank arm, each arm being perpendicular to said crankshaft and in an offset direction to the other crank arm, one of said crank arms having at the end opposite said crankshaft a combination weight and position indicator.

REFERENCES:
patent: 1123647 (1915-01-01), Ackman
patent: 2078160 (1937-04-01), Reed
patent: 2421603 (1947-06-01), Doppelhammer
patent: 2988268 (1961-06-01), Mioduski
patent: 3301475 (1967-01-01), Clark
patent: 4063681 (1977-12-01), Tong

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