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Title:
A PORTABLE COMMUNICATION DEVICE WITH ELECTROMECHANICAL TRANSDUCER MEANS AND A BATTERY PACK THEREFOR
Document Type and Number:
WIPO Patent Application WO1999063642
Kind Code:
A3
Abstract:
A portable communication device has electromechanical transducer means for converting mechanical energy, caused by movements of the portable communication device, into electrical energy for supplying power to the portable communication device. The electromechanical transducer means is arranged to store mechanical energy after a respective movement of the portable communication device ceases.

Inventors:
WOLF MATS
SVENSSON PER
Application Number:
SE9900911W
Publication Date:
February 17, 2000
Filing Date:
May 28, 1999
Export Citation:
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Assignee:
TELEFONAKTIEBOLAGET LM ERICSSON
International Classes:
H02J7/14; H02K7/18; H02K35/00; (IPC1-7): H02J7/14; H04M1/72; H04B1/38
Domestic Patent References:
WO1984001041A11984-03-15
Foreign References:
US4091302A1978-05-23
US4910720A1990-03-20
EP0409819A21991-01-23
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