B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
294/23
B66C 3/10 (2006.01) B66C 3/06 (2006.01)
Patent
CA 1042484
ABSTRACT OF THE DISCLOSURE A cable-controlled grab device possessing a pair of scoops directly and linkably connected to support yoke means. A central shaft has the scoops pivotably mounted at opposite ends thereof. An upper portion of tackle means is secured to the yoke means while between a lower portion thereof and the central shaft are arranged releaseable locking means for indirectly connecting the scoops to the yoke means. The locking means has two locking arms urgeable by remotely controllably actuating means into a locking position in engagement with a locking member associated therewith. The actuating means takes the form of a pressure medium cylinder linkably connected between the locking arms and inserted in a hydraulic circuit adapted to be pressure-loaded so as to force the locking arms into the locking position. Remotely controllable valve means are included in the hydraulic circuit and are capable when closed of maintaining the arms in the locking position and when open of permitting the locking arms to slide out of engagement with the locking member due to the weight loading of the scoops.
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