Patent ID: 7453772
Filing Date: 2008-11-18
Classification: G10K,H04R

Abstract:
1. A flextensional apparatus for use in a flextensional transducer, comprising: a shell having an internal hollow bounded at a top surface and a bottom surface by a concavo—concave arm arrangement, each arm having a first and second end and each of a given thickness, with the top concave arm and the bottom concavo arm joined at the first end by a common thicker first end portion and each arm joined at the second end by corresponding common thicker second end portion; a plurality of vibratable elements arranged in a stack from a first end to a second end, said stack positioned in the hollow of said shell and extending from one end of the hollow to the other end and positioned along an axis such that said first and second arms are symmetrically disposed with respect to said axis; a first radiator extending in a first direction relatively from the center of said first arm and operably coupled thereto, and a second radiator extending in an opposite direction from the center of said second arm and operably coupled thereto, whereby when said elements vibrate, said arms deform to cause said radiators to alter position according to said deformation, and wherein said first radiator and said second radiator each have a symmetrical mushroom configuration.