Patent ID: 6702046
Filing Date: 2004-03-09
Classification: E21B

Abstract:
A drill device for forming a hole in the earth, comprising:a drill bit body having a front end and a rear end with a central axis extending between said front and rear ends and being connectable to a rotatable means, a plurality of angularly spaced apart slots formed in the exterior of said body which are located outward relative to said central axis and extend between said front and rear ends, each slot having a lip extending from each of its said front and rear ends respectively, a cutting means for each of said slots, with each of said cutting means comprising a connecting portion to be located in said slot with a forward end and a rearward end, each connecting portion comprising a hook near each of its said forward and rearward ends respectively for connection to said lips of said slot in which said connecting portion is located, a removable stop positioned to prevent longitudinal movement of said connecting portion of each said cutting means relative to its said slot.