Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Reexamination Certificate
2008-01-01
2008-01-01
Sherry, Michael (Department: 2836)
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
Reexamination Certificate
active
07315440
ABSTRACT:
Methods and circuits for driving a coil-armature device are disclosed. The circuits are configured to drive the coil-armature device to a first energy level for a period of time sufficient to retract the armature to the center of the coil, and then, to drive the coil-armature device to a second energy level subsequently. The first energy level is greater than the second energy level. The second energy level may be achieved by alternatively connecting and disconnecting a driving voltage to the coil-armature device according to a “hold” mode duty cycle. The first energy level may be achieved by connecting the driving voltage to the coil-armature device continuously for a period of time sufficient to retract the armature to the center of the coil. Alternatively, the first energy level may be achieved by alternatively connecting and disconnecting the driving voltage to the coil-armature device according to a “pull-in” mode duty cycle, which is different from the “hold” mode duty cycle.
REFERENCES:
patent: 4661766 (1987-04-01), Hoffman et al.
patent: 4765426 (1988-08-01), Shimizu
patent: 4878147 (1989-10-01), Oyama et al.
patent: 4925156 (1990-05-01), Stoll et al.
patent: 4949215 (1990-08-01), Studtmann et al.
patent: 4953056 (1990-08-01), Yakuwa et al.
patent: 4978865 (1990-12-01), Hartmann et al.
patent: 5510951 (1996-04-01), Briedis et al.
patent: 5546268 (1996-08-01), Hurley et al.
patent: 5687050 (1997-11-01), Bartsch
patent: 5910890 (1999-06-01), Hansen et al.
patent: 5986896 (1999-11-01), Gibart et al.
patent: 6019461 (2000-02-01), Yoshimura et al.
patent: 6256185 (2001-07-01), Maller
patent: 58005438 (1983-01-01), None
Bauer Scott
Rader & Fishman & Grauer, PLLC
Sherry Michael
Yazaki North America, Inc.
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