Handling: hand and hoist-line implements – Hoist-line slings – Latch release
Patent
1976-06-17
1977-08-23
Cherry, Johnny D.
Handling: hand and hoist-line implements
Hoist-line slings
Latch release
37186, 294110R, 294111, B66C 310
Patent
active
040435806
ABSTRACT:
A cable-controlled grab device possessing a pair of scoops directly and linkably connected to a support yoke. A central shaft has the scoops pivotably mounted at opposite ends thereof. An upper portion of tackle is secured to the yoke while between a lower portion thereof and the central shaft is arranged a releasable locking mechanism for indirectly connecting the scoops to the yoke. The locking mechanism has two locking arms urgeable by a remotely controllable actuating mechanism into a locking position in engagement with a locking member associated therewith. The actuating mechanism 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. A remotely controllable valve is included in the hydraulic circuit and is 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.
REFERENCES:
patent: 997748 (1911-07-01), Callahan
patent: 1817595 (1931-08-01), Wallace
patent: 3934917 (1976-01-01), Paxton et al.
A/S Kongshavn Industri
Cherry Johnny D.
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