US PATENT SUBCLASS 454 / 220
.~.~.~ Having slidably interconnected sections


Current as of: June, 1999
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454 /   HD   VENTILATION

196  DF  MEANS COMBINED WITH WINDOW {12}
214  DF  .~ Having air passage between sill and bottom of sash {5}
216  DF  .~.~ Including wall for upwardly deflecting inlet air {3}
220.~.~.~ Having slidably interconnected sections


DEFINITION

Classification: 454/220

Having slidably interconnected sections:

(under subclass 216) Subject matter comprising at least two

air guiding surface portions attached together which slip or glide relative to one another.

(1) Note. The slipping or gliding motion is usually for adjustment of the surface to suit window size.

SEE OR SEARCH CLASS

160, Flexible or Portable Closure, Partition, or Panel,

223, for such devices made of two or more slidably interconnected sections, wherein each of the slats is composed of sliding or telescoping sections, the device having no additional means for directing or controlling air; subclasses 90+, particularly subclass 104, for such devices combined with flexible or portable panels, but having no means in addition to such combination for directing or controlling the air; subclasses 222+ for plural strip, slat, or panel devices slidably interconnected; and subclasses 375+ for single frames having movable side bar sections.