Patent ID: 8412289

Claim:
A sound-amplifying cell phone case for a cell phone with a sound outlet located on the right and left side and the bottom perimeters, the cell phone case comprising: a cover case for enclosing and covering a rear portion of the cell phone; a circular throat member provided in a frame interior to cover the sound outlet for sound impedance, matching to create an improved coupling effect between the original speaker and the air; sectional chambers covering both the horizontal and vertical coverage axis' to receive and change the directional characteristics of sound waves from the circular throat member to amplify and channel the sound en route towards the outer perimeters of the device; and a spring disposed between the cover case and the rear portion of the cell phone for having the cover case opened at a specific angle, wherein the cover case pops up when pressed down, as the spring sustains the cover case when compressed and expanded, wherein the cover case further comprises a pair of gripping corner portions provided at two corners at the opening end for holding two corresponding corners of the cellular phone so as to close the cover case overcoming the opening force of the spring.