Back to results
US 7,189,036 B1Granted
Coring bit
AssigneeForest City Tool, Inc.
InventorAnthony R. Watson
Life of this patent
Estimating the term…
Abstract
A coring bit provides easy core removal by utilizing a series of lateral blades which extend from the top cutting surface to the base of the bit. The lateral blades and inner faces of the coring bit are biased to provide a conical shape to the core thus permitting the core to be easily extracted. Vents positioned approximate the lateral blades allow chips, debris and waste to be quickly dispelled. Various types of small center drill bits aid in the initial coring stages.
Claims18
A coring bit comprising:
- a) a base;
- b) a circular wall, said circular wall defining an inner face and an outer face, said inner and said outer faces angularly disposed to one another and positioned on said base;
- c) a shoulder, said shoulder attached to said base;
- and
- d) a first lateral blade, said first lateral blade attached to said wall interiorly thereof and extending to said base.
2 more elements
A coring head comprising:
- a base, a wall, said wall affixed to said base, said wall defining a top, an inner face and an outer face, said inner face angularly disposed to said outer face, said top defining a cutting surface, a cutting tooth, said cutting tooth attached to said cutting surface, a lateral blade, said lateral blade positioned along said inner face and spaced from said cutting tooth.
Dependencies are inferred from the claim text.