US PATENT SUBCLASS 29 / 243.525-- .~.~.~.~.~.~.~ And gas

US PATENT SUBCLASS 29 / 243.525
.~.~.~.~.~.~.~ And gas

Current as of: June, 1999
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29 /	HD	METAL WORKING

700	DF	MEANS TO ASSEMBLE OR DISASSEMBLE {55}
243.5	DF	.~ Overedge assembling means {5}
243.517	DF	.~.~ Annular work {2}
243.519	DF	.~.~.~ With second workpiece inside annular work one workpiece moved to shape the other {2}
243.521	DF	.~.~.~.~ Comprising driver for snap-off-mandrel fastener; e.g., Pop (TM) riveter {5}
243.523	DF	.~.~.~.~.~ Pneumatic- or fluid-actuated tool {1}
243.524	DF	.~.~.~.~.~.~ Liquid {1}
243.525		.~.~.~.~.~.~.~ And gas

DEFINITION

Classification: 29/243.525

And gas:

(under subclass 243.524) Device wherein flowable medium in the liquid state is used as tool urging flowable medium and wherein flowable medium in the gaseous state is also used at tool urging medium.

(1) Note. Included herein is a device having a cylinder powered by a gas (e.g., compressed air) that, in turn, drives a piston to pressurize a liquid which serves to move the tools.

(2) Note. Included herein is a device utilizing liquid to effect repositioning (and deformation) of the "elements" and gas to return the tools to the resting position.