Patent · US Expired

Apparatus for making-up and breaking threaded pipe connections

US4092881A · kind A · utility

41Cited by

4References

18Claims

0Family size

Assignee

Christensen, Inc. · US

Inventors

Rainer Jurgens · Celle, DE
Alfred Ostertag · Celle, DE

Key dates

Filing date	Oct 29, 1976
Grant date	Jun 6, 1978
Priority date	—
Expiry date	Oct 29, 1996

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/53687
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

An apparatus for making-up and breaking a threaded connection between threaded tubular members, including a turnable chuck and a non-turnable chuck, each of which can be releasably clamped around its companion threaded tubular member, rotation of the turnable chuck in one direction making up the threaded connection, whereas rotation of the turnable chuck in the opposite direction breaking the threaded connection.

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