The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 1989
Filed:
Sep. 08, 1987
Patrick D McKeown, Mansfield, OH (US);
Jack W Neiger, Tuscarawas, OH (US);
Cyclops Corporation, Pittsburgh, PA (US);
Abstract
A noise barrier system having support members and noise absorbing panels is disclosed. The noise absorbing panels include a front corrugated perforated sheet and a rear corrugated solid sheet which define a chamber. A central sinusoidally corrugated perforated sheet is provided within the chamber. A first blanket of low frequency noise absorbing material is disposed adjacent the front face of the central member and is configured so that a resonance zone is provided between the first blanket and the rear surface of the front sheet. A second blanket of higher frequency sound absorbing material is provided between the rear surface of the central member and the front surface of the rear sheet.