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US 9,284,779 B2Granted
Drilling apparatus
AssigneeDrilformance Technologies, LLC
InventorSean Gillis
Life of this patent
Estimating the term…
Abstract
A drilling apparatus including a housing, a drill bit having a head end, a connection end, and a bearing mandrel between the head end and the connection end, a bearing pack associated with the bearing mandrel and the housing for transmitting forces between the drill bit and the housing, the bearing pack including at least one bearing interposed between the bearing mandrel and the housing, and a drive mechanism connected with the connection end of the drill bit, for driving the drill bit.
Claims18
A drilling apparatus comprising:
- (a) a housing having a housing lower end;
- (b) a drill bit, the drill bit having a head end extending from the housing lower end, a connection end contained within the housing, and a bearing mandrel between the head end and the connection end, wherein the drill bit is comprised of an outer drill bit portion and an inner drill hit portion, wherein a bit annular space is defined between the outer drill bit portion and the inner drill bit portion along at least a portion of the bearing mandrel, and wherein the housing lower end is received within the bit annular space;
- (c) a bearing pack associated with the bearing mandrel and the housing, for transmitting forces between the drill bit and the housing, the bearing pack comprising at least one bearing interposed between the bearing mandrel and the housing;
- and
- (d) a drive mechanism connected with the connection end of the drill bit, for driving the drill bit.
2 more elements
Dependencies are inferred from the claim text.