US PATENT SUBCLASS 212 / 236-- .~.~ Including plural actuating means converging toward boom tip to effect both horizontal and vertical swinging

US PATENT SUBCLASS 212 / 236
.~.~ Including plural actuating means converging toward boom tip to effect both horizontal and vertical swinging

Current as of: June, 1999
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212 /	HD	TRAVERSING HOISTS

223	DF	HAVING HORIZONTALLY SWINGING BOOM OR BRIDGE {9}
232	DF	.~ And vertically swinging {6}
236		.~.~ Including plural actuating means converging toward boom tip to effect both horizontal and vertical swinging

DEFINITION

Classification: 212/236

Including plural actuating means converging toward boom tip to effect both horizontal and vertical swinging:

(under subclass 232) Apparatus including two elongated members, each of which engages the boom* adjacent the point from which the load is suspended, and diverges to engage either the boom support or points fixed relative thereto, wherein means are provided to selectively change the length of the members to pivot the boom about both horizontal and vertical axes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

310+, for a ship-mounted derrick swung horizontally and vertically by flexible cables.