Google patents earbud with pivoting acoustic duct. This will help increase the life of the earbud and also make it more convenient to use.

Patent Number – US 9,113,254 B2

Patent Title – EARBUD WITH PIVOTING ACOUSTIC DUCT
Inventors – Ajit C. Cotha, Atlanta, GA (US)
Assigned to Google Technology Holdings LLC, Mountain View, CA (US)
Filed by GOOGLE TECHNOLOGY HOLDINGS LLC., Mountain View, CA (US)
Filed on Aug. 5, 2013, as Appl. No. 13/958,772.
Prior Publication US 2015/0036861 A1, Feb. 5, 2015