US PATENT SUBCLASS 52 / 144
WITH EXPOSED CONFIGURATION HAVING ACOUSTICAL FUNCTION


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

144WITH EXPOSED CONFIGURATION HAVING ACOUSTICAL FUNCTION {1}
145  DF  .~> Absorbing material behind foraminous facing sheet


DEFINITION

Classification: 52/144

(under the class definition) Structure which in the completed construction presents an exposed, i.e., visible, face having a defined physical configuration peculiar to the attenuation of sound.

(1) Note. Mere definition of a material, e.g., fibrous, porous, rock wool, etc., is not a definition of a physical configuration and such subject matter classified elsewhere in this class on other features, and see the references herein after under "Search Class".

SEE OR SEARCH THIS CLASS, SUBCLASS:

17, for an insulated car roof.

167.1+, for means compensating earth- transmitted force, e.g., earthquakes.

238.1+, for a resilient spacer, holding a partition from a barrier, which may act to absorb sound waves.

347, for a member isolating a backing from support. 380+, for a cast in situ barrier having an isolated space filled with insulated material.

393+, for a component separated by a relatively yieldable spacer.

404.1+, for a construction with a nonsettable insulating material within a cavity.

573.1, for a structure having means accommodating dimension variation responsive to changing conditions, which means may also act as buffer to sound waves.

SEE OR SEARCH CLASS

181, Acoustics, particularly

30, and 290+ for a sound deadening unit, per se, even though it may be made of multiple layers, i.e., not including features for a building structure combination.