Patent ID: 7168528

Claim:
A brake disk assembly comprising an end plate, a pressure plate, three rotors, and two stators interleaved between said rotors, and disposed between said end plate and pressure plate, wherein said pressure plate, end plate, rotors and stators comprise brake disks having wear faces, said brake disks comprising first thickness brake disks each having an initial first available wear portion on each wear face, second thickness brake disks each having an initial available wear portion on each wear face which is two thirds of the available wear portion on each wear face of the first thickness disks, and third thickness brake disks each having an initial available wear portion on each wear face which is one third of the available wear portion on each wear face of said first thickness disks, said brake disk assembly initially including disks of a first, second and third thickness, whereby at an overhaul the available wear portion on each wear face of each first thickness disk is about equal to the initial available wear portion on each wear face of second thickness disks, and the available wear portion on each wear face of disk of said second thickness brake disks is about equal to the initial available wear portion on each wear face of said third thickness disks and said available wear portion on each wear face of third thickness disk is substantially fully worn and said third thickness disks are replaced by disks of a first, second or third thickness.