Andrew U Cho

US Patent:

20090290745, Nov 26, 2009

Filed:

May 7, 2009

Appl. No.:

12/436956

Inventors:

Alan Weir - Lake Zurich IL, US
John DeCicco - Elmhurst IL, US
Andrew Cho - Naperville IL, US
Amy Smith - Chicago IL, US

Assignee:

CREDO TECHNOLOGY CORPORATION - Broadview IL
ROBERT BOSCH GMBH - Stuttgart

International Classification:

H04R 1/02
H02J 7/00

US Classification:

381387, 320107

Abstract:

Embodiments of the present invention comprise a battery charging jobsite audio unit that is particularly useful at construction and other jobsites are disclosed which provides important desirable features and functionality comprise a housing, at least one charger for charging a removable battery pack, an audio unit that includes a speaker system for providing substantially 360 sound, as well as subwoofer, a cord and plug for connecting the unit to a source of AC power, and circuitry for selectively applying power to the audio unit and the charger. The preferred and alternative embodiments also preferably have a unique protective frame structure that is connected to the housing of the unit.