Patent ID: 8066290
Filing Date: 2011-11-29
Classification: B25D,Y10T

Abstract:
1. A chuck, comprising a hollow cylindrical receiving sleeve ( 3 ) having a guide diameter (D) and at least two, opposite, rotation transmitting, strip-shaped webs ( 4 a , 4 b ) projecting radially inward and having contact surfaces ( 5 ); and at least one locking member ( 2 ) radially displaceable through a radial opening formed in the receiving sleeve, a receiving side end of the rotation transmitting webs ( 4 a , 4 b ) being spaced from a receiving side edge of the radial opening ( 6 ) by a distance (X) 1.5 times greater than the guide diameter (D), wherein the sum of contact surfaces ( 5 ) of the rotation transmitting webs ( 4 a , 4 b ) is determined by an equation: wherein: L—is a length of a rotation transmitting web; H—is a height of the rotation transmitting web; and D—is the guide diameter of the receiving sleeve.