Patent ID: 8475237

Claim:
Optical grade surfacing tool, including: a rigid support ( 60 ) having a transverse end surface ( 25 a ); an elastically compressible interface ( 12 ) attached to the rigid support ( 60 ), including a central part ( 12 a ) which is in line with said end surface ( 25 a ) of the rigid support ( 60 ) and a peripheral part ( 12 b ) that is transversely beyond said end surface ( 25 a ) of the rigid support ( 60 ), having a first transverse end surface ( 26 ), a second transverse end surface ( 27 ) and a lateral surface ( 28 ) extending from the periphery of the first end surface ( 26 ) to the periphery of the second end surface ( 27 ), said first end surface ( 26 ) being pressed against and covering said end surface ( 25 a ) of the rigid support ( 60 ); and a flexible pad ( 13 ) adapted to be pressed against a surface ( 71 ) to be worked, attached to the interface ( 12 ) on the opposite side to the rigid support ( 60 ), including a central part ( 13 a ) that is in line with said end surface ( 25 a ) of the rigid support and a peripheral part ( 13 b ) that is transversely beyond said end surface ( 25 a ) of the rigid support; characterized in that said pad ( 13 ) is carried by an elastically stretchy membrane ( 14 ), said membrane including: a central plateau ( 15 ) having a first transverse end surface ( 22 ) to which said pad ( 13 ) is stuck and a second transverse end surface ( 23 ) pressed against and covering said second transverse end surface ( 27 ) of said interface ( 12 ); and a plurality of straps ( 18 ) each projecting radially from the periphery of said plateau ( 15 ) and each having a distal part interengaged with an attachment means ( 38 ; 55 ) situated in line with the first end surface ( 26 ) of the interface ( 12 ), each of said straps ( 18 ) passing around said lateral surface ( 28 ) of the interface ( 12 ) and then extending as far as said attachment means, each strap ( 18 ) being taut.