1
Samuel Heller: Rotary induction machine having control of secondary winding impedance. Heller DeJulio Corporation, Flehr Hohbach Test Albritton & Herbert, December 24, 1996: US05587643 (17 worldwide citation)

A rotary induction machine having wound primary and secondary windings with capacitive means connected directly across said secondary windings and resistive means connected in series with said secondary windings.


2
Alan K Wallace, James A Oliver: Rotary induction machine having control of secondary winding impedance. Heller DeJulio Corporation, Flehr Hohbach Test Albritton & Herbert, December 19, 2000: US06163137 (15 worldwide citation)

A rotary induction machine in which operating characteristics of the machine are controlled by adding impedance elements to the rotor windings in which the impedance elements are stationary and connected to the rotor windings by a rotary transformer.


3
Alan K Wallace, James A Oliver: Rotary induction machine having control of secondary winding impedance. Heller DeJulio Corporation, Flehr Hohbach Test Albritton & Herbert, November 16, 1999: US05986438 (14 worldwide citation)

A rotary induction machine having wound primary and secondary windings with resistive means connected in series with secondary windings and inductive reactive means connected across said resistive means, with the inductive reactance means and resistive means selected to provide an effective resistan ...


4
Oliver James A, Wallace Alan: Rotary induction machine having control of secondary winding impedance. Heller Dejulio, February 7, 2001: EP1074080-A1

A rotary induction machine in which operating characteristics of the machine are controlled by adding impedance elements to the rotor windings in which the impedance elements are stationary and connected to the rotor windings by a rotary transformer.


5
Heller Samuel: Rotary induction machine having control of secondary winding impedance. Heller Dejulio, EGAN William J, January 25, 1990: WO/1990/000833

A rotary induction machine having rotor and stator with primary and secondary windings (11, 12, 13 and 17, 18, 19) and impedances (31, 41, 46; 32, 42, 47 and 33, 43, 48) connected in the secondary windings to correct the power factor and increase efficiency.


6
Oliver James A, Wallace Alan: Rotary induction machine having control of secondary winding impedance. Heller Dejulio Corporation, TEST Aldo J, October 28, 1999: WO/1999/054981

A rotary induction machine having wound primary (11-13) and secondary windings (17-19) with resistive means (55-57) connected in series with secondary windings and inductive reactive means (51-53) connected across said resistive means, with the inductive reactance means (51-53) and resistive means ( ...