Internal-combustion engines – Poppet valve operating mechanism – Electrical system
Reexamination Certificate
2007-08-07
2007-08-07
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Electrical system
C251S129010
Reexamination Certificate
active
11438041
ABSTRACT:
An electromagnetic actuator includes a stator assembly mounted to a center pole formed of material having high magnetic permeability and functions as a return path for the magnetic field generated when current is passed through coils in the stator assembly. When current is applied to one or more coils within the stator assembly, a magnetic field is generated that interacts with a magnetic field generated by one or more magnets disposed within the armature assembly and causes the armature to move relative to the center pole thus, for example, opening or closing a valve.
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Carlmark Richard Tucker
Froeschle Thomas A.
Hanson David E.
Ma Jun
Mark Roger
Bose Corporation
Chang Ching
Fish & Richardson P.C.
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