US PATENT SUBCLASS 418 / 191
INTERENGAGING ROTATING MEMBERS

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

191INTERENGAGING ROTATING MEMBERS {9}
192  DF  .~> With movable partition {1}
194  DF  .~> Each tapered
195  DF  .~> Non-parallel axis
196  DF  .~> Three or more {1}
198  DF  .~> Intermittent rotation
199  DF  .~> Multiple units {1}
201.1  DF  .~> Helical or herringbone {4}
204  DF  .~> Eccentrically mounted
205  DF  .~> Like rotary members {1}

DEFINITION

Classification: 418/191

(under the class definition) Apparatus in which a plurality of members rotating about fixed or substantially fixed axes have surface portions disposed to maintain or substantially maintain line contact therebetween against which pressure fluid reacts to thereby form a boundary of the working chamber; at least one of the rotating members being a working member.

(1) Note. Included herein are rotating members rotating about spaced axes, each having portions thereof sweeping a separate one of intersecting channels which have radially inward and outward stationary working chamber surface, the chambers intersecting at a common line of tangency whereat each rotating member may act as an abutment for the other as the members rotate.

SEE OR SEARCH THIS CLASS, SUBCLASS:

125+, for a roller means incidentally forming a part of the working chamber and functioning merely to perfect the seal relationship between the working member and the cylinder at the convergence of their surfaces whereby a boundary of the working chamber is formed thereby.

189+, for rotary expansible chamber devices of the interengaging rotary members type in which provision is made for relieving trapped fluid.

SEE OR SEARCH CLASS 73, Measuring and Testing,

261, for expansible chamber rotary piston meters having interengaging pistons and see the search notes thereunder.