US PATENT SUBCLASS 160 / 4
.~.~.~ Weight

Current as of: June, 1999
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160 /   HD   FLEXIBLE OR PORTABLE CLOSURE, PARTITION, OR PANEL

1  DF  AUTOMATIC CONTROL {5}
2  DF  .~ Nonthermal automatic initiator {2}
3  DF  .~.~ Force initiated {1}
4.~.~.~ Weight

DEFINITION

Classification: 160/4

(under subclass 3) Devices wherein the force applied to the sensing device is the weight of an animal, person, vehicle or other object.

SEE OR SEARCH CLASS

49, Movable or Removable Closures,

263+, for a closure operator initiated by an impact or by pressure on a pedal or treadle.

292, Closure Fasteners,

93, and 94, for panel and platform emergency operative means for closure fastener bolts.