Patent ID: 9551388
Date: 2017-01-24
CPC Classifications: F16D

Claim:
1. A disk brake assembly that eliminates brake seizure due to corrosion, said disk brake assembly defined by a housing with a cylinder bore formed by a continuous sidewall with a piston axially moveable within said bore; said continuous sidewall having a first annular groove dividing said continuous sidewall into a first land surface and a second land surface constructed and arranged to cooperate with a first sealing ring positioned within said first annular groove to frictionally engage said piston, said first land surface and said second land surface positioned at a distance from said piston forming a first diameter, the improvement comprising: a second annular groove having a depth positioned in said second land surface at a predetermined distance from said first annular groove and extending around said continuous sidewall, a second sealing ring positioned within said second annular groove and constructed and arranged to frictionally engage said piston creating a seal between said second land surface and said piston, said second sealing ring is interchangeable with said first sealing ring; said second annular groove dividing said second land surface from a third land surface positioned at a distance from the piston, said third land surface defining a second diameter greater than said first diameter; said third land spaced apart from said piston at a distance sufficient to eliminate the need for a sealed boot to prevent the piston from seizing the housing.