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:
Sep. 16, 2014
Filed:
Jul. 12, 2011
Shinji Ohashi, Tokyo, JP;
Hiroshi Ohyama, Tokyo, JP;
Kazuhiro Takashima, Tokyo, JP;
Yuichi Miyazaki, Tokyo, JP;
Shinji Ohashi, Tokyo, JP;
Hiroshi Ohyama, Tokyo, JP;
Kazuhiro Takashima, Tokyo, JP;
Yuichi Miyazaki, Tokyo, JP;
Abstract
The open air layer-type vibration reduction structure is provided with at least one plate-like member of which the obverse surface faces toward the open space side; and a frame spaced at an interval from the reverse surface of the plate-like member, and an air layer is formed between the plate-like member and the frame. An air-permeable ventilation portion is formed at least one of the plate-like member and the frame, such that the average value of the flow resistance on the surface of at least one of the plate-like member and the frame, which forms an air layer, is in a range greater than 0 N·s/mand equal to or less than 1,000 N·s/m. The ventilation portion may be configured such that the sound pressure level generated within the air layer by applying an external force to the air layer is reduced by 3 dB or more.