Motorola Corporation

Other

Neil Johan Schmertmann

John M McKee

David Townsend

Robert M Engelke

Michael P Goldenberg

Robert Kurcbart

John P Cheraso

Suthirug Num Pisutha-Arnond

Peter Kirschhofer

A planar film speaker(200) utilizes a first planar film diaphragm (102), and a second planar film diaphragm (104). A taut armature reciprocating impulse transducer (100) is positioned at an edge between the first planar film diaphragm (102) and the second planar film diaphragm (104). A first transmission medium (120) couples the taut armature reciprocating impulse transducer (100) to the first planar film diaphragm (102), and a second transmission medium (122) couples the taut armature reciprocating impulse transducer (100) to the second planar film diaphragm (104). An audio input signal is converted to tactile energy by the taut armature reciprocating impulse transducer (100), which is then converted by the first planar film diaphragm (102) and the second planer film diaphragm (104) into acoustic energy.

Planar film speaker with inertial driver

A reaction propulsion motor (200) utilizes a taut armature reciprocating impulse transducer (100) having a motional mass (18) to generate an excitation force in response to an excitation signal. A conveyor element (204) translates the excitation force into locomotion. A transmission medium (202) is coupled between the taut armature reciprocating impulse transducer (100) and the conveyor element (204) to couple the excitation force generated to the conveyor element (204).

Reaction propulsion motor and apparatus for using the same

Paging message device

Selective call message entry device

Desktop storage enclosure

A housing (18) for an electronic device comprises a chamber (16) having an interior (14) for receiving electronic circuitry and a detachable contaminant barrier (12) generally contouring the interior (14) of the chamber (16) for preventing foreign particles from entering the chamber (16), for removing existing foreign particles in the chamber (16), and for aiding in the handling of the housing (18) during assembly. The detachable contaminant barrier (12) includes a first protrusion (22) for manipulating said contaminant barrier (12) and said housing (18) and a second protrusion (24) for removing said contaminant barrier (12) from said housing (18).

Method for manufacturing a selective call receiver

Growing community of inventors

Boynton Beach, FL, United States of America

Neil Johan Schmertmann