Motor-driven map holder

Details Motor-driven map holder Motor-driven map holder

1985-02-26

1989-01-03

Mancene, Gene

Card, picture, or sign exhibiting

Changing exhibitor

Single reel and web

40592, 40593, 40643, G09F 1118

Patent

active

047947152

ABSTRACT:
A roller-type map or shade holder is provided which is operated by an electric motor. In one embodiment, a simple drive clutch arrangement decouples the motor drive shaft from the map roller when the map is fully unwound or rewound.

REFERENCES:
patent: 326013 (1885-09-01), Brownlee
patent: 430902 (1890-06-01), Turner
patent: 1102921 (1914-07-01), Hodges
patent: 2729908 (1956-01-01), Miller
patent: 3003270 (1961-10-01), Palm
patent: 3293785 (1966-12-01), Krei
patent: 4525946 (1985-07-01), Olson

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