Power plants – Pressure fluid source and motor – Coaxial impeller and turbine unit
Reexamination Certificate
2005-11-01
2005-11-01
Lazo, Thomas E. (Department: 3745)
Power plants
Pressure fluid source and motor
Coaxial impeller and turbine unit
Reexamination Certificate
active
06959544
ABSTRACT:
An impeller, a turbine, and a stator form a torus of a torque converter. A elliptic ratio L/H of an axial length L of the torus to a radial height H of the torus is 0.72 or smaller. A diameter ratio (D2/D1) of an inner diameter D2of the torus to an outer diameter D1of the torus is 0.45 or greater. The impeller includes an impeller core, and an impeller axial length ratio (Lp/D1) of an axial length Lp of the impeller core to the outer diameter D1of the torus is in a range between 0.030 to 0.045. The turbine includes a turbine core, and an turbine axial length ratio (Lt/D1) of an axial length Lt of the turbine core to the outer diameter D1of the torus is in a range between 0.021 to 0.029.
REFERENCES:
patent: 6464054 (2002-10-01), Fukunaga et al.
patent: 6575276 (2003-06-01), Fukunaga et al.
patent: 6729453 (2004-05-01), Uehara
patent: 04-290657 (1992-10-01), None
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patent: 200-074174 (2000-03-01), None
Fukunaga Takao
Mori Kozo
Takada Yukiyoshi
Exedy Corporation
Lazo Thomas E.
Shinjyu Global IP Counselors, LLP
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