Patent ID: 6179302
Filing Date: 2001-01-30
Classification: B23B,Y10S,Y10T

Abstract:
In an adapter for a driver of a rotary tool, a cylinder body having a longitudinal axis and a portion with an interior for rotationally drivingly receiving the rotary tool, a cylindrical collar co-axially and telescopically snugly disposed over said body portion and slidable on said body along said axis in a tool-locking first axial direction and in a tool-release second axial direction, a spring disposed within said body and active on said collar for yielding urging said collar in said first axial direction, said collar having an interior with a conical surface thereon centered with and faced toward said body axis, a ball on said body offset from said body axis and disposed adjacent said conical surface and being movable radially relative to said body axis and the tool by having said conical surface disposed to move onto said ball through slidable movement of said collar on said body in said first axial direction, and said body and said collar having an interlocking connection of a pin and a slot for guiding said collar in its slidable axial movement and with said slot having an elongated axis and an extent therealong disposed parallel to said body axis and a terminal end located in a direction along said slot toward said first axial direction and with said pin disposed within said slot, the improvement comprising:said slot of said interlocking connection having a slot portion extending from and continuous with said slot extent terminal end and extending at an acute angle relative to said body axis along a line extending from said slot terminal end and angled toward said first direction, andsaid slot portion being disposed to receive said pin after said pin is out of said slot extent and with said slot portion and said pin thereby being arranged to have said collar slide on said body toward said first axial direction for pressing said ball toward the tool upon rotation of said collar on said body and about said body axis in a rotational direction away from said slot extent and along said slot portion and with said ball being in rolling contact with said collar conical surface for moving said collar and its said conical surface further in said first axial direction, and for releasably locking said collar relative to said body by the interlocking connection of said pin in said slot portion.