Patent ID: 6857242

Claim:
A cushion block for using in a build-up surface formed by strips, said cushion block comprising at least one first coupling device at one end thereof, at least one second coupling device at an opposite end thereof corresponding to said at least one first coupling device, said at least one first coupling device and said at least one second coupling device being made such that multiple cushion blocks are connectable in a line in a linking direction by engaging the at least one first coupling device of one cushion block into the at least one second coupling device of another cushion block, a retaining device protruded from one side thereof and adapted to secure at least one of the strips to the corresponding side of the cushion block, and a deformable body connected between said at least one first coupling device and said at least one second coupling device and deformable in said linking direction wherein the cushion block further comprising a flat base; said deformable body extends forwards from one side of said flat base in said linking direction; said at least one first coupling device is respectively extended from one side of said deformable body remote from said base; said at least one second coupling device is respectively formed in said flat base remote from said deformable body; said retaining device is perpendicularly protruded from one side of said flat base.