Patent · US Active

Method and apparatus for opening threaded joints of drilling equipment

US9022142B2 · kind B2 · utility

1Cited by

0References

32Claims

0Family size

Assignee

Sandvik Mining and Construction Oy · FI

Inventors

Tuomo Pirinen · Tampere, FI
Vesa Uitto · Tampere, FI
Miika Huikkola · Tampere, FI
Maunu Manttari · Tampere, FI
Sami HANSKI · Tampere, FI
Isto Ahonen · Tampere, FI

Key dates

Filing date	May 3, 2011
Grant date	May 5, 2015
Priority date	—
Expiry date	Feb 4, 2032

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B44/00
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The invention relates to a method and apparatus for opening threaded joints of drilling equipment (6) by striking the drilling equipment (6) with the percussion device of a rock drilling rig (1) and by measuring vibration originating from the drilling equipment (6) during striking. In addition to vibration, measuring means (9) measure a parameter defining at least one additional condition, on the basis of which the decision to stop striking is made.

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