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.
申请公布号
US2010033315(A1)
申请公布日期
2010.02.11
申请号
US20090563853
申请日期
2009.09.21
申请人
DEKA PRODUCTS LIMITED PARTNERSHIP
发明人
KAMEN DEAN;AMSBURY BURL;ARLING RICHARD W.;FIELD J. DOUGLAS;FINKELSTEIN JEFFREY;HEINZMANN JOHN DAVID;LANGENFELD CHRISTOPHER;LEMAY PHILIP;MORRELL JOHN B.;SACHS JASON M.
