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:
Nov. 29, 2016
Filed:
May. 17, 2013
Pietro Massini, Ancona, IT;
Massimiliano Caimmi, Morro D'Alba, IT;
Francesco Violi, Sant'IIario D'Enza, IT;
Marco Vizzaccaro, Tivoli, IT;
Pietro Massini, Ancona, IT;
Massimiliano Caimmi, Morro D'Alba, IT;
Francesco Violi, Sant'IIario D'Enza, IT;
Marco Vizzaccaro, Tivoli, IT;
ASK INDUSTRIES SOCIETA PER AZIONI, Monte San Vito (AN), IT;
Abstract
A fume extractor hood is disclosed, comprising a box with a motor-fan assembly and a muffler module comprising a bearing frame defining an air extraction conduit with axis (A), an active noise suppression system comprising at least one electro-acoustic transducer and at least two microphones, a passive noise suppression system comprising a sound absorbent material. Said muffler module comprises at least two electro-acoustic transducers connected to the walls of said bearing frame, in opposite positions, in such manner to leave the central part of said conduit free. The sound beams coming from said at least two electro-acoustic transducers are mutually combined, obtaining a resulting sound beam that can be directed towards a preferred direction by means of beam forming algorithms.