Swing stop for rotary crane
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United States of America Patent
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Dec 22, 2009
Grant Date -
May 8, 2008
app pub date -
Nov 6, 2006
filing date -
Nov 6, 2006
priority date (Note) -
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Abstract
An improvement for a railroad tie crane utilizes a movable stop mounted on an elongated member between a pair of cushioned terminals to reduce impact stress on equipment and personnel in situations where the tie crane must be prevented from fouling an adjacent track. The movable stop is selectively engaged by a retractable bar mounted on the rotatable platform carrying the crane boom.
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