US PATENT SUBCLASS 92 / 169.4
.~.~.~ Coaxial sleeve or tube

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

169.1  DF  CYLINDER DETAIL {3}
169.2  DF  .~ With reinforcing member {1}
169.3  DF  .~.~ Extending through working member {1}
169.4.~.~.~ Coaxial sleeve or tube

DEFINITION

Classification: 92/169.4

Coaxial sleeve or tube:

(under subclass 169.2) Apparatus wherein the structure is the reinforcing structure comprises a member extending parallel and concentrically with the working member.