US PATENT SUBCLASS 418 / 55.4-- .~.~ With mechanical sealing

US PATENT SUBCLASS 418 / 55.4
.~.~ With mechanical sealing

Current as of: June, 1999
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418 /	HD	ROTARY EXPANSIBLE CHAMBER DEVICES

54	DF	WORKING MEMBER HAS PLANETARY OR PLANETATING MOVEMENT {6}
55.1	DF	.~ Helical working member, e.g., scroll {5}
55.4		.~.~ With mechanical sealing

DEFINITION

Classification: 418/55.4

With mechanical sealing:

(under subclass 55.1) Apparatus in which a means is provided to prevent leaking of the working fluid.

SEE OR SEARCH CLASS

277, Seal for a Joint or Juncture, for a generic sealing

means or process,

398, for a relatively rotatable radially extending sealing face member (e.g., face, mechanical, etc.) that accommodates or exhibits eccentric, gyratory, or oscillatory motion or subclasses 399+ for a relatively rotatable radially extending sealing face member (e.g., face, mechanical, etc.) having a particular configuration.