Power plants – Pressure fluid source and motor – Coaxial impeller and turbine unit
Reexamination Certificate
2007-03-29
2009-12-29
Lazo, Thomas E (Department: 3745)
Power plants
Pressure fluid source and motor
Coaxial impeller and turbine unit
C060S364000, C409S132000, C029S557000
Reexamination Certificate
active
07637100
ABSTRACT:
In an automatic transmission, a lip portion of an oil seal can be prevented from riding up reliably when an impeller hub is inserted into the oil seal so as to be attached thereto, even when the lip portion is provided with a tightening margin. The impeller hub is attached to the oil seal from the lip portion side of the oil seal , with an end portion thereof in which a notch is formed. The impeller hub has a first chamfer portion formed in a bottom portion outer peripheral edge portion of the notch as an inclined surface that decreases radially in an axial direction of the impeller hub toward the end portion of the impeller hub, and an axial distance of the first chamfer portion from the bottom portion outer peripheral edge portion increases from both end sides of a circumferential direction of the notch toward a circumferential direction central portion of the notch.
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Ito Naoki
Kato Hiroshi
Muranaka Yasunari
Sugita Kazuhiko
Uozumi Shingo
Aisin AW Co., Ltd
Lazo Thomas E
Sughrue & Mion, PLLC
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