Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Reexamination Certificate
2011-06-14
2011-06-14
Manahan, Todd E (Department: 3776)
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
C433S086000, C433S125000, C310S050000, C310S017000, C601S080000, C606S169000
Reexamination Certificate
active
07959438
ABSTRACT:
An ultrasonic tool is disclosed with a handpiece (300, 500, 806) containing coils (304A-304D;504A-504D;804A-804B) that produce an electromagnetic field that vibrates a magnetic rod (102, 702A,702B,820) of a moveable pin transducer (MPT)100disposed within the handpiece. Ultrasonic vibrations are produced when the coils are selectively powered by an ultrasonic signal generator, which can include a stepper motor control apparatus (1300, 1400). A tip106can be removably attached to an MPT100.A channel (708A,708B) in the magnetic rod (700A,700B) can allow fluidic communication with a handpiece fluid supply channel (310, 510). A method of vibrating a tool can include controllably energizing at least one electromagnetic coil contained within a handpiece to vibrate a magnetic rod and an attached tip. The method can include varying the energy to at least one of the electromagnetic coils with a stepper motor control apparatus.
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Ballinger Michael R
Manahan Todd E
Marshall & Gerstein & Borun LLP
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