Back to results
US 8,770,368 B2Granted
Wet type friction plate
AssigneeKito Corporation
InventorTetsu Hiroshima
Life of this patent
Estimating the term…
Abstract
A wet friction plate is constructed such that a carbon based friction material is placed on an outer peripheral side of a friction plate and a paper based friction material is placed on an inside of a carbon based friction material. A transmission torque occupied by the paper based friction material is smaller than that occupied by the carbon based friction material. The wet friction plate can prevent a sudden unexpected slip at low temperature.
Claims1
A wet type friction plate, comprising:
- a carbon based friction member divided into a plural number of carbon members in a circumferential direction of said friction plate and a paper based friction member, said carbon members and said paper based friction member being pasted and fixed on said friction plate,
- wherein said carbon members are provided on an outer side of said friction plate at a predetermined interval and said paper based friction member is provided on an inner side of said friction plate,
- wherein said paper based friction member has a moment arm r1 which is a distance from a center of said friction plate to a center of said paper based friction member and said carbon based friction member has a moment arm r2 which is a distance from said center of said friction plate to a center of said carbon based friction member,
- wherein a ratio of r1 to a sum of r1+r2 is 0.38, and
- wherein a ratio of area occupied by said paper based friction member to a sum of areas occupied by said paper based friction member and said carbon based friction member is 0.24.
2 more elements
Dependencies are inferred from the claim text.