Patent ID: 6905005

Claim:
A wet double wrap brake band for use with a rotating element in an oil-wet environment, said double wrap brake band being provided with a friction surface on an inner circumferential surface of a band portion wrapped substantially double, wherein said friction surface is provided with an inclined part such that said friction surface becomes gradually closer to an associated outer circumferential surface of said rotating element in a rotating direction of said rotating element and a wedge of oil forms between the friction surface and the outer circumference of said rotating element as the element rotates, wherein said friction surface is bonded in a form divided in plural pieces in a circumferential direction, adjacent divided pieces having a predetermined interval formed therebetween, each divided piece is formed with a thickness thereof gradually increasing from a leading end of each of said divided pieces of said friction surface toward a trailing end relative to said rotational direction of said rotating element, and the thickness of the trailing end of each of said divided pieces is greater than the thickness of the leading end of the divided piece immediately adjacent in said rotational direction.