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1. US6144235 - Control circuit for a motor-operated switch

Office United States of America
Application Number 09143916
Application Date 31.08.1998
Publication Number 6144235
Publication Date 07.11.2000
Grant Number 6144235
Grant Date 07.11.2000
Publication Kind A
IPC
H03B 1/00
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
1Details
H02P 7/06
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
7Arrangements for regulating or controlling the speed or torque of electric DC motors
06for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
H01H 3/00
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
3Mechanisms for operating contacts
H01H 3/26
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
3Mechanisms for operating contacts
22Power arrangements internal to the switch for operating the driving mechanism
26using dynamo-electric motor
CPC
H01H 3/26
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
3Mechanisms for operating contacts
22Power arrangements internal to the switch for operating the driving mechanism
26using dynamo-electric motor
H01H 2003/266
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
3Mechanisms for operating contacts
22Power arrangements internal to the switch for operating the driving mechanism
26using dynamo-electric motor
266having control circuits for motor operating switches, e.g. controlling the opening or closing speed of the contacts
Applicants Square D Company
Inventors Marano James R.
Malo Kevin J.
Meehleder Steven M.
Agents Irfan Kareen M.
Golden Larry I.
Title
(EN) Control circuit for a motor-operated switch
Abstract
(EN)

A motor control circuit controls operation of a motor for making or breaking one or more pairs of contacts of a power switching device such as a circuit breaker. The motor control circuit includes a logic circuit responsive to a control input signal and an enable signal for producing an active signal state when both the control signal and the enable signal are present, and for producing an inactive logic signal state when either of the control signal and the enable signal is not present. A switching control signal producing circuit is responsive to said active state of the logic signal for producing a switching control signal for operating the motor for a predetermined time interval sufficient to perform one of opening and closing of the one or more pairs of contacts.