418 / | HD | ROTARY EXPANSIBLE CHAMBER DEVICES |
54 | DF | WORKING MEMBER HAS PLANETARY OR PLANETATING MOVEMENT {6} |
58 | .~ Plural working members or chambers {3} | |
59 | DF | .~.~> Radially spaced working chambers |
60 | DF | .~.~> Axially spaced working members |
61.1 | DF | .~.~> Circumferentially spaced working chambers {2} |