Patent ID: 7912241

Claim:
A push-pull, planar-magnetic acoustic transducer, comprising: a front panel incorporating an array of magnets; a back panel including an array of magnets; a hinge structure connecting the back panel to the front panel along a major edge of each; the hinge structure including a pivot bar coupling the front and back panels to one another and a plurality of sections which depend in alternating order from the front and back panels and which interlace upon assembly, with the sections which depend from one of either the front or back panel incorporating an oblong slot for admitting the pivot bar, the oblong slot being elongated in the front to back direction of the push-pull, planar-magnetic acoustic transducer which allows the front and back panels to be moved relative to one another while held face to face; and set-screws holding the front and back panels together in facing, parallel assembly.