Patent · US Active

Percussive rock drill bit with flushing grooves

US10626680B2 · kind B2 · utility

1Cited by

3References

12Claims

0Family size

Assignee

Sandvik Intellectual Property AB · SE

Inventors

Andreas Rindeskar · Hofors, SE
John Hammargren · Sandviken, SE

Key dates

Filing date	Dec 15, 2014
Grant date	Apr 21, 2020
Priority date	—
Expiry date	Feb 12, 2035

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B10/40
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A percussive rock drill bit has a head and a shank in which a plurality of flushing grooves extend radially outward and axially rearward from a front face. The flushing grooves are configured to optimize the axially rearward flow of rock particles and fines entrained in the flushing fluid. In particular, each groove is generally convex relative to a longitudinal axis of the drill bit and is declined continuously relative to the axis from a first groove end to a second groove end.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.