Friction engagement element with lubrication
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 16, 2003
Grant Date -
Mar 28, 2002
app pub date -
Sep 20, 2001
filing date -
Sep 22, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lubricating apparatus, for a friction engagement element that engages a rotatable member with a case includes a hub connected to the rotatable member, friction members disposed between the hub and the case, a hydraulic servo for engaging the friction members, and an oil passage for supplying lubricant from the case to the friction members. A discharge opening of the oil passage is formed at a position which is radially inward of the friction members and which is axially to a side of the friction members. The discharge opening is directed toward the friction members. A weir member for restricting escape of lubricant in the axial direction through a gap between the hub and the friction members is provided at the other axial side of the friction members. Therefore, the axial escape of lubricant exiting the friction members can be prevented by a non-contact leakage restriction that does not cause drag resistance. The radially outward stream of oil between the friction members is secured, and the friction members can be reliably cooled to remove heat generated by slip control of the friction engagement element.
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