US PATENT SUBCLASS 451 / 505
.~.~ Hydraulically actuated

Current as of: June, 1999
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451 /   HD   ABRADING

490  DF  TOOL SUPPORT FOR FLEXIBLE-MEMBER TOOL {13}
504  DF  .~ Including expansible external surface {3}
505.~.~ Hydraulically actuated

DEFINITION

Classification: 451/505

Hydraulically actuated:

(under subclass 504) Tool support wherein expansion of the external surface is caused by a gas or liquid under pressure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

481, for a fluid expanding tool carrier.

SEE OR SEARCH CLASS

492, Roll or Roller,

4+, for rolls, per se, which are inflatable.