192 clutches and power-stop control – Clutches – Axially engaging
Reexamination Certificate
2007-06-26
2007-06-26
Rodriguez, Saul (Department: 3681)
192 clutches and power-stop control
Clutches
Axially engaging
C192S113360
Reexamination Certificate
active
11062107
ABSTRACT:
The object of the present invention is to provide an optimizing method for a groove structure of a friction disk of a wet-type friction engaging element, which can reduce drag torque by increasing outgoing flow of lubricating oil on the friction surface and increasing the content of air in the lubricating oil. The optimizing method for a groove structure of a friction disk of a wet-type friction engagement element comprising a sectoral inner section12of a groove10widening inwardly formed on the surface of a friction member of the wet-type friction engaging element, wherein the outgoing flow per groove area is calculated based on the entrance angle (opening angle) θ of the inner section12and the ratio h/w of the full length w of the groove10to the length h of the inner section; and then a range of the entrance angle (opening angle) θ of the inner section and the ratio h/w of the full length w of the groove to the length h of the inner section is determined where the outgoing flow per groove area is at least a certain value.
REFERENCES:
patent: 6601684 (2003-08-01), Collis et al.
patent: 9-53674 (1997-02-01), None
Li Chen Yu
Takahashi Jin
Dynax Corporation
Howson & Howson LLP
Rodriguez Saul
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