US PATENT SUBCLASS 418 / 55.2
.~.~ Having specific wrap or end plate, e.g., shape, material, coating

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

Internet Version by PATENTEC © 1999      Terms of Use


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}
55.2.~.~ Having specific wrap or end plate, e.g., shape, material, coating

DEFINITION

Classification: 418/55.2

Having specific wrap or end plate, e.g., shape, material, coating:

(under subclass 55.1) Apparatus in which the end plate or wrap has a specific shape, or coating or is made out of a specific material.