US PATENT SUBCLASS 52 / 167.1
MEANS COMPENSATING EARTH-TRANSMITTED FORCE (E.G., EARTHQUAKE)

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

167.1MEANS COMPENSATING EARTH-TRANSMITTED FORCE (E.G., EARTHQUAKE) {3}
167.2  DF  .~> Dynamic force generator
167.3  DF  .~> Cross bracing
167.4  DF  .~> Relative motion means between a structure and its foundation {3}

DEFINITION

Classification: 52/167.1

MEANS COMPENSATING EARTH-TRANSMITTED FORCE (E.G., EARTHQUAKE):

(under the class definition) Structure including features (a) allowing motion between supported and supporting structures when a force is transmitted to the structure through the earth, (b) which compensate for earth motion without affecting structure supported by the earth, or (c) having means for absorbing or confining a force transmitted through the earth to a structure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

393+, for a resilient member sandwiched in between two opposed members.

573.1, for other constructions having means to provide dimensional variation responsive to changing conditions.

SEE OR SEARCH CLASS

14, Bridges, appropriate subclasses, for roller bearing expansion devices which allow relative movement between the bridge structure and its support.

384, Bearings, for devices which reduce friction between

relatively moving elements.