Crane safety apparatus
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United States of America Patent
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-
Mar 24, 1998
Grant Date -
N/A
app pub date -
Nov 2, 1994
filing date -
Dec 27, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A crane safety apparatus for displaying a schematic diagram of a part of a crane mechanism on a two-dimensional screen dynamically as the crane mechanism is operated, and displaying on the same screen a predetermined operation zone as a visually discriminative zone pattern. The operation zone pattern is displayed on the screen in response to the key command by an operator during a selected crane operation mode, while referring to the schematic crane mechanism diagram currently displayed on the screen.
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Cited Art Landscape
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