Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Dean Kamen0
Burl Amsbury0
Christopher Langenfeld0
J. Douglas Field0
Jason M. Sachs0
Jeffrey Finkelstein0
John B. Morrell0
John David Heinzmann0
...
Date of Patent
September 22, 2009
Patent Application Number
11552829
Date Filed
October 25, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
An audio alarm for a transporter having an electric motor. The alarm has a signal generator for generating a signal within the audible frequency range and a modulator for modulating a current that is applied to the electric motor in accordance with the signal generated by the signal generator.
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