Patent ID: 6105595
Filing Date: 2000-08-22
Classification: B23Q,Y10T

Abstract:
An automatic fluid feed system for use with a rotating drill bit for substrates wherein the system comprises:(a) a drive member which is rotated by a motor connected through a drive system to the drive member wherein the drive member incorporates a fluid flow passage therethrough communicated with a fluid flow source and said passage ends at a fluid flow aperture;(b) a driven member cooperatively rotated by said drive member to rotate a drill bit supported thereby;(c) a releasable torque transfer member between said drive member and said driven member to enable said drive member to rotate said driven member wherein said torque transfer member is responsive to loading on said drill bit; and(d) a valve element cooperatively arranged with said fluid flow passage to enable fluid flow from said passage for lubricating said drill bit so that said valve element releases fluid to flow for said drill bit when loading acting on said drill bit is in a specified range.