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US 4,143,495 AGranted
Sound-absorbing panel
AssigneeFa. Pass & Co.
InventorUlrich Hintz
Life of this patent
Estimating the term…
Abstract
A sound-absorbing panel having a front and a rear sheet, the front sheet being corrugated and perforated; a filler of particles of elastic material lies between the sheets.
Claims8
A sound-absorbing element, comprising:
- (a) a pair of posts adapted to be mounted in the ground in spaced, parallel relationship, the posts having facing grooves, and
- (b) a plurality of panels carried in the grooves and mounted one above the other, each panel consisting of a corrugated, perforated front sheet forming the front outer wall of the panel, a corrugated rear sheet forming the rear outer wall of the panel and held in spaced non-contacting relationship to the front sheet, a perforated wall lying against the front sheet, and a body of loose particles of an elastomer material lying between the rear sheet and the perforated wall.
Dependencies are inferred from the claim text.