Device in which a bookrack moves vertically and horizontally

Details Device in which a bookrack moves vertically and horizontally Device in which a bookrack moves vertically and horizontally

1996-10-21

1998-04-14

Chin-Shue, Alvin C.

Supports: racks

Power operated

Linearly movable

211121, A47F 502

Patent

active

057382255

ABSTRACT:
A bookrack that moves vertically and horizontally is provided with a chain gear (56) of a reduction motor (55) that turns left or rights by the operation of switches (3, 4). Power is supplied to a rotary wheel (48) to turn an attachment double chain (44). A rotary wheel (40) of a moving body (35) turns motivated by the attachment double chain (44), and a gear (41) connected to the rotary wheel (40) is rotated and engages a rack gear (43). The moving body (35) is thereby made to move in a direction contrary to the attachment double chain (44). A bookrack (80) connected to the moving body (35) is caused to move vertically and horizontally around a right-angled tetragonal track with the moving body (35). The bookrack enables a child, an old or infirm person or a handicapped person to take out or arrange books from a seated position, since the bookrack (80) moves freely and is kept horizontal at all positions as the moving body (35) moves the bookrack (80) horizontally and vertically around the track.

REFERENCES:
patent: 1785954 (1930-12-01), Hayes
patent: 3269521 (1966-08-01), Briglia
patent: 3861519 (1975-01-01), Ware
patent: 4314647 (1982-02-01), Harris et al.
patent: 4650264 (1987-03-01), Dahnert
patent: 4676560 (1987-06-01), Schmitz et al.
patent: 5040689 (1991-08-01), Hull et al.

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