H - Electricity – 01 – F
Patent
H - Electricity
01
F
317/29.6
H01F 7/08 (2006.01) B41J 9/42 (2006.01) H01F 7/16 (2006.01)
Patent
CA 2020211
ABSTRACT Hammer solenoid A hammer solenoid for impact printers includes a hollow ferromagnetic plunger. A ferromagnetic flux booster is attached to the rear end of the plunger to enhance the characteristics of the solenoid by shifting the magnetic center of the plunger while, at the same time, providing a dead structure which minimizes vibration and bounce. In an alternate embodiment, the plunger walls may include a permanent magnet which is polarized to be attracted by the solenoid coil.
Ang Chwee P.
Wang Ping-Shih
Ang Chwee P.
Fetherstonhaugh & Co.
North American Philips Corporation
Wang Ping-Shih
LandOfFree
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