Electricity: motive power systems – Induction motor systems
Reexamination Certificate
2006-10-24
2006-10-24
Ip, Paul (Department: 2837)
Electricity: motive power systems
Induction motor systems
C318S743000, C318S289000
Reexamination Certificate
active
07126307
ABSTRACT:
An interface circuit for actuating an electrical consumer, especially a pole-changing rotary-current induction motor, with a first contact element assigned to a signal line carrying an alternating voltage signal to generate at least two different control signals. A circuit arrangement is provided for actuating an electric motor, especially a pole-changing rotary-current induction motor, with a control switch element having an aforementioned interface circuit, which is connected via a signal line to a motor control of the electric motor. In order to achieve a reduction in the number of signal lines required as compared to a parallel transmission, while at the same time preserving the easy fault diagnosis, an encoding diode (10) is hooked up in series before or after the first contact element (6a, 7a) in the signal line (4) and a further second contact element (6b, 7b) is arranged in parallel with the encoding diode (2), so that depending on the positions of the first contact element (6a, 7a) and the second contact element (6b, 7b) three different control signals (19a, 19b, 19c) can be generated.
REFERENCES:
patent: 3493833 (1970-02-01), Swanke
patent: 3536982 (1970-10-01), Jackson
patent: 3628115 (1971-12-01), Pruitt
patent: 3716770 (1973-02-01), Habisohn
patent: 3864604 (1975-02-01), Pfanzelt
patent: 3971971 (1976-07-01), Wycoff
patent: 4004156 (1977-01-01), Schuller
patent: 4789135 (1988-12-01), Watanabe
patent: 5210473 (1993-05-01), Backstrand
patent: 5875281 (1999-02-01), Thexton et al.
patent: 420340 (1937-03-01), None
patent: 6 609 573 (1968-09-01), None
patent: 40 23 166 (1992-02-01), None
patent: 9405631 (1994-07-01), None
patent: 575045 (1993-12-01), None
patent: 2283378 (1995-05-01), None
patent: 04275082 (1992-09-01), None
Appel Erik
Freitag Holger
Hasenack Burkhard
Münzebrock Anton
Persico Giuliano
Demag Cranes & Components GmbH
Ip Paul
Van Dyke Gardner, Linn & Burkhart, LLP
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