Library book bin with a vertically adjustable floor
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United States of America Patent
Stats
-
Dec 14, 1999
Grant Date -
N/A
app pub date -
Jan 15, 1999
filing date -
Jan 15, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A mobile container or bin is provided with a vertically adjustable floor which is suspended by cables which pass through a plurality of supports or pulleys, and the cables are wound around a single cylindrical drive member coupled to a reversible motor with a power off brake. The cylindrical cable drive member is rotatably disposed about an axle passing through side wall members of the bin. The cylindrical cable drive member includes at least one pair of right hand and left hand spiraling grooves having a depth and width sufficient to wind the cables thereon in a single layer. An object level sensing sensor is mounted to the bin for sensing the presence or absence of objects above the floor at a pre-set access level. The sensor output is provided as an input to a control circuit for maintaining the highest most ones of the objects on the floor at the preset level so as to provide a constant object load and object unload floor level.
First Claim
Family
International Classification(s)
Cited Art Landscape
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