US PATENT SUBCLASS 49 / 442
.~.~.~ Guide engages slot in closure

Current as of: June, 1999
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49 /   HD   MOVABLE OR REMOVABLE CLOSURES

404  DF  WITH MEANS MOUNTING CLOSURE FOR RECIPROCATION {16}
428  DF  .~ Diverse or springy material guide or slide {4}
436  DF  .~.~ Bearing includes transverse restrainer {3}
442.~.~.~ Guide engages slot in closure {2}
443  DF  .~.~.~.~> On closure face
444  DF  .~.~.~.~> Portion engages edge surface

DEFINITION

Classification: 49/442

(under subclass 436) Device wherein the bearing surface portion includes a projecting rib or protuberance which slidingly interfits with an elongated opening running the length of the closure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

421, for a closure mounted baffle plate guided in a slot in a wall of a chamber.

440+, for a sashless closure having its edge guided in a channel bearing.