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:
Oct. 29, 2013
Filed:
Nov. 13, 2006
Applicants:
Mark Donaldson, Rue St. Germain, CH;
Damien Oliver Givernet, Saint-Genis-Pouilly, FR;
Inventors:
Mark Donaldson, Rue St. Germain, CH;
Damien Oliver Givernet, Saint-Genis-Pouilly, FR;
Assignee:
Phitek Systems Limited, Auckland, NZ;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10K 11/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
An active noise cancellation earphone () has an acoustic path including a cavity () and a pipe () leading to the auditory canal () which are arranged to form an oscillator in use which has the effect of recovering the open loop system phase characteristics at a selected frequency or frequency range. The earphone () also has two parts () which can be adjusted relative to each other to allow the earphone () to be comfortably and correctly positioned in use.