Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2008-05-20
2008-05-20
Tamai, Karl (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S049030, C310S083000, C310S088000, C310S089000, C310S090000, C251S129110
Reexamination Certificate
active
11135404
ABSTRACT:
An actuator for use with a fluid channel structure comprises: a stator assembly including stator yokes, and a coil; and a rotor assembly including a housing shaped in a circular hollow-cylinder, an output shaft inserted through the housing, a sleeve, a magnet fixedly attached to the sleeve, and a rotor case. In the actuator described above, the housing includes first and second sealing units having elasticity and disposed at the outer circumference of the circular hollow-cylinder. The first sealing unit makes elastic contact with a wall of a fluid channel of the fluid channel structure, and the rotor case has a cup-like configuration and has an open end portion thereof engaging with the circular hollow-cylinder portion of the housing and pressing on the elastic second sealing unit. Thus, hermetic structure is surely achieved.
REFERENCES:
patent: 6224034 (2001-05-01), Kato et al.
patent: 2003/0201413 (2003-10-01), Hirota et al.
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Fujii Hiroaki
Muramatsu Kazuo
Suzuki Yuzuru
Minebea Co. Ltd.
Scheuermann David W.
Tamai Karl
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