IP Library › Granted Patent US 7,592,900
Granted Patent B2
US 7,592,900 · App. 11/552,829 · Granted Sep 22, 2009

Transporter motor alarm

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Quick Facts
Patent No.
US 7,592,900
App. No.
11/552,829
Granted
Sep 22, 2009
Kind
B2
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.

Claims (8)

1. An audio alarm for a transporter of the type having an electric motor for driving the transporter by supplying a torque to a drive arrangement, the alarm comprising:

a. a signal generator for generating a signal within the frequency range of hearing of a person; and

b. a modulator for modulating a current applied to the electric motor in accordance with the signal generated by the signal generator to produce an audible alarm.

2. A method for alerting a user of a transporter of the type having an electric motor for driving the transporter by supplying a torque to a drive arrangement to the occurrence of a specified condition, the method comprising:

a. generating a signal within the frequency range of hearing of a person; and

b. modulating a current applied to the electric motor in accordance with the signal generated by the signal generator to produce an audible alarm.

3. A method in accordance with claim 2 , wherein the specified condition includes a requirement that the transporter decelerate to zero velocity.

4. A method in accordance with claim 2 , wherein the step of modulating a current includes modulating current applied to a plurality of electric motors.

Assignments (3)
RELEASE OF SECURITY INTEREST Recorded Jan 29, 2015
From: THE PRIVATEBANK AND TRUST COMPANY
To: SEGWAY INC.
Reel/Frame 034853/0931 →
SECURITY AGREEMENT Recorded Feb 28, 2013
From: SEGWAY INC.
To: THE PRIVATEBANK AND TRUST COMPANY, AN ILLINOIS BANKING CORPORATION
Reel/Frame 029900/0301 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 26, 2006
From: KAMEN, DEAN; AMSBURY, BURL; ARLING, RICHARD W.; HEINZMANN, JOHN D.; LEMAY, PHILIP; FINKELSTEIN, JEFFREY; LANGENFELD, CHRISTOPHER; MORRELL, JOHN B.; SACHS, JASON M.; FIELD, J. DOUGLAS
To: DEKA PRODUCTS LIMITED PARTNERSHIP
Reel/Frame 018441/0071 →