Improved Hook block

A hook block apparatus 10 has an upper part 12 with a sheave assembly 20, a lower part 14 fixed to the upper part and a hook 30 rotatably connected to the lower part. The apparatus has a remotely operable rotator for rotating the hook about a vertical axis. The rotator may have a motor 42 and first...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	Joseph O'Kane
Format:	Patent
Sprache:	eng
Schlagworte:	CRANES HAULING HOISTING LIFTING LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES PERFORMING OPERATIONS TRANSPORTING
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