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:
Dec. 10, 2013
Filed:
Jan. 26, 2009
Christophe Gaillard, Romorantin-Lanthenay, FR;
Michel Guillosson, Olivet, FR;
Roland Quessard, Romorantin-Lanthenay, FR;
Christophe Gaillard, Romorantin-Lanthenay, FR;
Michel Guillosson, Olivet, FR;
Roland Quessard, Romorantin-Lanthenay, FR;
Velecta Paramount S.A., Romorantin-Lanthenay, FR;
Abstract
The present invention relates to a silent hair dryer () comprising at least one casing () comprising an inlet end () and an outlet end () and enclosing at least one turbine (T) sucking in air via at least one admission orifice () upstream of the turbine (T) and expelling it downstream via at least one outlet orifice (), and generating determined sound frequencies, characterized in that it comprises a silencer comprising at least one chamber () upstream of the admission orifice () and comprising an inlet orifice () for aspiration of air upstream of the chamber (), the diameter of the chamber () being greater than the diameter of the admission orifice () and the diameter of the inlet orifice (), the length (L) and the diameter (Dc) of the chamber () being of such a size so as to define a volume tuned as a function of said determined sound frequencies.