US PATENT SUBCLASS 212 / 238-- .~.~.~ Fluid actuated ram

US PATENT SUBCLASS 212 / 238
.~.~.~ Fluid actuated ram

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999 Terms of Use

212 /	HD	TRAVERSING HOISTS

223	DF	HAVING HORIZONTALLY SWINGING BOOM OR BRIDGE {9}
232	DF	.~ And vertically swinging {6}
237	DF	.~.~ Including means to swing boom vertically {2}
238		.~.~.~ Fluid actuated ram

DEFINITION

Classification: 212/238

Fluid-actuated ram:

(under subclass 237) Apparatus wherein the motor comprises a relatively reciprocating piston and cylinder actuated by fluid pressure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

261, for a fluid-actuated vertically swinging boom where no horizontal swinging is claimed.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

115, for miscellaneous elongated members which are pivoted relative to a supporting base by a fluid pressure actuated mechanism.