Patent ID: 7152847

Claim:
A pulley block having a body, a sheave rotatably supported within the body, a mounting pin extending through a bore in the block, said pin having an enlarged head disposed internally of the body to retain the pin in the bore, and a locking arrangement for said pin to restrain rotation of the pin with respect to the body, wherein said locking arrangement comprises a groove formed transversely across the enlarged head of the mounting pin, a hole extending within the block adjacent the head of the pin and substantially normally to the axis of said bore, and a lock member rotatably mounted in said hole, the lock member being profiled for rotation between a locked position where a part of the lock member locates in said groove in the head of the pin and to restrain rotation of the pin and a free position where the lock member is free of the head of the pin so that the pin is rotatable in said bore.