US PATENT SUBCLASS 137 / 369
.~.~.~.~.~ Telescopic well casing

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

343  DF  WITH CASING, SUPPORT, PROTECTOR OR STATIC CONSTRUCTIONAL INSTALLATIONS {7}
356  DF  .~ Static constructional installations {3}
363  DF  .~.~ Ground supporting enclosure {2}
364  DF  .~.~.~ Valve and meter wells {4}
368  DF  .~.~.~.~ Combined with actuator {1}
369.~.~.~.~.~ Telescopic well casing

DEFINITION

Classification: 137/369

(under subclass 368) Valve wells in which the vertical column is divided into sections slidable one within the other, which sections may be locked together to fix the height of the column.

SEE OR SEARCH THIS CLASS, SUBCLASS:

287, for vertically mounted fluid channels of the hydrant type having telescopic casings, movement of the conduit actuating the valve.

370, for telescopic casings comprising valve and meter wells, no valve actuator being claimed.