US PATENT SUBCLASS 267 / 141.6
.~.~.~.~ Collapsible wall

Current as of: June, 1999
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267 /   HD   SPRING DEVICES

136  DF  RESILIENT SHOCK OR VIBRATION ABSORBER {8}
141  DF  .~ Nonmetallic, resilient element {2}
141.2  DF  .~.~ Confined between coaxial, vibrating annular members {1}
141.3  DF  .~.~.~ Including radial contact surface, e.g., tapered or shouldered member {3}
141.6.~.~.~.~ Collapsible wall

DEFINITION

Classification: 267/141.6

Collapsible wall:

(under subclass 141.3) Structure comprising a three-dimensional free space bounded on at least one side by a resilient element whereby vibration of the members will cause the resilient element to distort and vary the shape and/or volume of the free space.