US PATENT SUBCLASS 92 / 115
.~.~.~ Part forms actuator for piston side wall portion adjusting means

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

Internet Version by PATENTEC © 1999      Terms of Use


92 /   HD   EXPANSIBLE CHAMBER DEVICES

109  DF  PISTON WITH RIGID AXIALLY EXTENDING HOLLOW STEM {2}
113  DF  .~ Relatively movable elongated part within stem {1}
114  DF  .~.~ Part and stem relatively axially adjustable {1}
115.~.~.~ Part forms actuator for piston side wall portion adjusting means

DEFINITION

Classification: 92/115

(under subclass 114) Apparatus in which the member forms an actuator for means positioned within the body of the piston which means operates to vary the dimension of the outer peripheral portion of the piston side wall upon movement of said member relative to the tubular element.

(1) Note. A piston in which the member is rigid with a portion of the piston forming the end face thereof is excluded from this subclass. Such structure is classified below on other features.

SEE OR SEARCH THIS CLASS, SUBCLASS:

206+, for a piston having a pair of axially spaced rigid members one of which forms an end face portion, and an interposed side wall portion, in which relative axial movement of said rigid members effects lateral movement of

the side wall portion.