Frank David Haas from 309 Haddon Ct, Franklin, TN 37067, age 68, Phone: 6156143440

Apparatus For Dc Motor Position Detection With Capacitive Ripple Current Extraction
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US Patent:

7064509, Jun 20, 2006
Filed:

Mar 14, 2005
Appl. No.:

11/079644
Inventors:

Zhenxing Fu - Ann Arbor MI, US
Karienne A. Yockey - Ypsilanti MI, US
Frank J. Aiello - Canton MI, US
James R. Winkelman - Bloomfield MI, US
Frank J. Haas - Northville MI, US
Assignee:

Visteon Global Technologies, Inc. - Van Buren Township MI
International Classification:

H01R 39/46
US Classification:

318439, 318138, 318254, 318244, 318246, 318253, 318293
Abstract:

An apparatus for determining angular positions of DC motor includes a capacitor connected in parallel with the DC motor. The current flowing through the capacitor, at any given time, is an AC ripple current responsive to a commutation event of the DC motor. The capacitor partially sources the motor current ripples during commutation and recharges itself during the off-commutation period. Since the number of commutation events per mechanical revolution is pre-determined once the DC motor is designed, the frequency of the AC ripple currents through the capacitor corresponds to the frequency of commutation, and thus a motor position of the DC motor.

System And Method For Drift Compensation When Using Pulse Count Controlled Motors
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US Patent:

7190129, Mar 13, 2007
Filed:

Dec 14, 2005
Appl. No.:

11/300127
Inventors:

Frank J. Haas - Northville MI, US
Assignee:

Visteon Global Technologies, Inc. - Van Buren Township MI
International Classification:

H02K 27/20
US Classification:

318245, 388828, 388904
Abstract:

A system of detecting position drift in the motor due to lost pulses. Due to imperfections in the motor, the timing of the commutation pulses is not uniform but forms a unique repeatable signature. The system identifies lost pulses by using a pattern recognition technique on the signature of the motor commutation pulse rate. By detecting when a pulse is lost, the system can apply a correction to the pulse count. Accordingly, the real time correction of the pulse count allows for the system to operate with significantly reduced mispositioning errors. In addition, the system requires far fewer calibrations.

System And Method For Detecting A Stalled Motor
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US Patent:

20080290828, Nov 27, 2008
Filed:

May 24, 2007
Appl. No.:

11/753185
Inventors:

Frank Joseph Haas - Northville MI, US
Stephen Andrew Sageman - Canton MI, US
International Classification:

H02P 7/18
H02P 3/00
US Classification:

318434
Abstract:

A system for detecting when a motor is stalled. The system including a voltage driving circuit and a voltage sensing circuit. The voltage driving circuit providing a driving signal to the motor through a connection node. The voltage driver circuit being configured to disconnect from the connection node while the voltage sensing circuit determines if the motor is stalled. A voltage sensing circuit determines if the motor is stalled based on a generated voltage that occurs if the motor is not obstructed and continues to spin when the voltage driver circuit is disconnected.

Apparatus And Method For Dynamic Font Switching
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US Patent:

42740797, Jun 16, 1981
Filed:

Jul 12, 1979
Appl. No.:

6/057070
Inventors:

Robert Todd - Farmington Hills MI
Frank J. Haas - Livonia MI
Assignee:

Burroughs Corporation - Detroit MI
International Classification:

G06K 970
US Classification:

3401463FT
Abstract:

A method and apparatus are provided for dynamically switching between fonts or groups of fonts in an automatic optical character reader. A switch character which is included between a first and second group of characters triggers the selection of the appropriate memory for the succeeding font.