Tambour-type sign

Details Tambour-type sign Tambour-type sign

1987-06-22

1989-05-09

Peshock, Robert

Card, picture, or sign exhibiting

Changing exhibitor

Motor operated

40518, 40524, G09F 1112

Patent

active

048276448

ABSTRACT:
A tambour-type sign has carrier bars hinged together to form a closed loop. The bars provide for inserting strips which display information. Pin and socket elements are formed on opposite edges of each carrier bar for the pin of one to engage in the socket of the next one to form a hinge. The loop is translated on a ring gear having internal teeth and a periphery in which there are equiangularly spaced apart grooves into which the sockets on the hinges register as a chain would on a sprocket. The ring gear is journaled for rotation on a bearing member exemplified by a square having four walls, the corners of which are segments of a circle whose diameter is equal to the diameter between the tips of the ring gear teeth. This drive structure is mounted on the laterally spaced apart support members so as to support the loop at both ends of the carrier bars. There are spaced apart pinions fixed on the cross shaft which engage with the respective ring gears. The shaft is motor driven. One end of the loop runs over similarly constructed ring gear and bearing assembly which are idlers.

REFERENCES:
patent: 644954 (1900-03-01), Wales
patent: 1010802 (1911-12-01), Rhodes
patent: 2204868 (1940-06-01), Russell et al.
patent: 2847782 (1958-08-01), Muse
patent: 2850088 (1958-09-01), Purdy
patent: 3335512 (1967-08-01), Newman
patent: 3782215 (1974-01-01), Moody
patent: 4175345 (1979-11-01), Rutchik
patent: 4577428 (1986-03-01), Trame

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