Patent ID: 7690087
Filing Date: 2010-04-06
Classification: A44B,Y10T

Abstract:
1. A button which comprises a button body ( 10 , 10 a , 10 b ) and a fastener ( 20 , 20 a , 20 b ) adapted to be arranged on the side of cloth ( 30 ) opposite to the side thereof on which said button body is set in place to nip the cloth therebetween and to fixedly secure the button body to the cloth, said button body containing an outer shell member ( 13 ), which comprises a button back ( 15 , 15 a , 15 b ) and a cap ( 14 , 14 a , 14 b ), and an insert ( 11 , 11 a , 11 b ) accommodated in the outer shell member, characterized in that all of said button back ( 15 , 15 a , 15 b ), said cap ( 14 , 14 a , 14 b ) and said insert ( 11 , 11 a , 11 b ) are made of an aluminum alloy, wherein a side portion (B) of said button back ( 15 , 15 a , 15 b ) has the Vickers hardness of Hv 110-140, and wherein a portion of said button back ( 15 , 15 b ) with which said fastener ( 20 , 20 b ) comes into contact has the Vickers hardness of Hv 80-105.