Patent ID: 6454072
Filing Date: 2002-09-24
Classification: F16D

Abstract:
An annular friction-clutch facing (30) for a multi-disk clutch (10) comprising:an inner edge (32) and an outer edge (34) defining a width (w) of said facing (30); a first group of grooves (136, 236) formed on said facing (30) and having a first cross-sectional area, each groove of said first group (136, 236) having a first opening (38) at said outer edge (34) and a second opening (40) at said inner edge (32) remote from said first opening (38) and adapted to direct lubricating agents across said width (w) over a substantial area of said facing (30); and a second group of grooves (42) formed on said facing (30) and having a second cross-sectional area smaller than said first cross-sectional area, said second group of grooves (42) including first and second sets of grooves (44, 46), the grooves of said first set (44) being disposed in intersecting relationship with the grooves of said second set (46), said second group of grooves (42) adapted to remove excess of the lubricating agents on said facing (30), and wherein said first group of grooves (236) includes a first predetermined sub-group of grooves (248) that extend arcuately in one direction across said width (w) and are spaced in equal increments relative to adjacent grooves of said first predetermined sub-group (248) and a second predetermined sub-group of grooves (250) that extend arcuately in a direction opposite to that of the grooves of said first predetermined sub-group (248) across said width (w) and are spaced in equal increments relative to adjacent grooves of said second predetermined sub-group (250).