US PATENT SUBCLASS 135 / 145
.~.~.~.~ Lazy tong type

Current as of: June, 1999
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135 /   HD   TENT, CANOPY, UMBRELLA, OR CANE

87  DF  PORTABLE SHELTER (I.E., TENT OR CANOPY) {18}
121  DF  .~ Framework {9}
143  DF  .~.~ Foldable {4}
144  DF  .~.~.~ Having link means {2}
145.~.~.~.~ Lazy tong type

DEFINITION

Classification: 135/145

Lazy tong type:

(under subclass 144) Foldable framework with link means wherein two collapsible sections are connected together by a series of pairs of diagonally crossing links, each pair being pivoted together at their midpoints and connected with the next pair at the ends so that the arrangement, as a whole, can be extended or retracted.

SEE OR SEARCH THIS CLASS, SUBCLASS:

131, for similarly hinged parts for arch- shaped frames.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

109, for lazy-tong extension unit.