Arrangement in a lifting device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 5, 2002
Grant Date -
N/A
app pub date -
May 22, 2000
filing date -
Nov 21, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
An arrangement for a spreader for hoisting containers includes a beam extendable from a retracted position in a housing to an extended position. An additional beam member is received in an inner end of the extendable beam and is arranged to slide axially with respect to the extendable beam, as well as with respect to the housing. An interlocking device is arranged on the extendable beam and on the additional beam member. The interlocking device transfers an extension motion from the extendable beam to the additional beam member. A device arranged on the additional beam member as well as the housing acts to limit the relative axial motion of the additional beam member with respect to the housing. The additional beam member provides an inner end extension of the extendable beam when the additional beam member is extended to engage the device of the housing.
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