192 clutches and power-stop control – Elements – Engaging surfaces
Reexamination Certificate
2007-12-26
2009-10-06
Lorence, Richard M. (Department: 3655)
192 clutches and power-stop control
Elements
Engaging surfaces
C192S113360
Reexamination Certificate
active
07597180
ABSTRACT:
A friction plate for a wet-type multiplate clutch is provided with a core plate and friction linings bonded on opposite sides of the core plate, respectively. Each of the friction linings is composed of plural segment pieces bonded at angular intervals on the corresponding one of said opposite sides. The segment pieces each have at least one first oil groove and at least one second oil groove. The first oil groove opens to a radially-inner side of its corresponding segment piece and has a closed end portion located in a radially-intermediate part of the corresponding segment piece, and the second oil groove opens to a radially-outer side of the corresponding segment piece and has a closed end portion located in another radially-intermediate part of the corresponding segment piece. The segment pieces are each provided in a friction surface thereof with at least one oil pocket closed at a circumference thereof.
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Hino Hirokazu
Hirayanagi Tsuyoshi
Kobayashi Masahiro
Toya Ritsuo
Yamada Masahiro
Cermak Kenealy Vaidya & Nakajima LLP
Lorence Richard M.
NSK-Warner K.K.
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