Electromagnetic contactor

Details Electromagnetic contactor Electromagnetic contactor

Filed on

2005-01-18

Date issued

2005-01-18

Examiner

Jackson, Stephen W. (Department: 2836)

Patent Class

Electricity: electrical systems and devices

SubClass

Control circuits for electromagnetic devices

SubSubClass

Systems for magnetizing, demagnetizing, or controlling the...

Other Related Categories

C361S154000, C361S160000

Type

Reexamination Certificate

Status

active

Patent number

06845001

Description

ABSTRACT:
In an electromagnetic contactor100for passing a current through an electromagnet301from a power source402and moving a movable core1from a first position in which a gap to a fixed core20is wide to a second position in which the gap is narrow by electromagnetic force and opening or closing a contact, there is provided an attraction force control part303for passing a strong acceleration current E1through the electromagnet301for a predetermined time so that acceleration in the second position of the movable core1becomes a predetermined value and passing a suction current E6through the electromagnet301in substantially the second position.

REFERENCES:
patent: 4720761 (1988-01-01), Saletta et al.
patent: 4720763 (1988-01-01), Bauer
patent: 4833565 (1989-05-01), Bauer et al.
patent: 5684668 (1997-11-01), Muramatsu et al.
patent: 56-121232 (1981-09-01), None
patent: 61-240520 (1986-10-01), None
patent: 5-47280 (1993-02-01), None
patent: 8-185779 (1996-07-01), None

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