The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 1986
Filed:
Feb. 25, 1985
William A Gill, Erskine, GB;
Babcock Power Limited, London, GB;
Abstract
A tool head assembly for use in preparing a tube for welding including a center pilot which is rotatable. The center pilot is adapted to enter a bore of a tube to center the tool head assembly by being provided with ball bearings which rotate around the internal surface of the bore of the tube. In addition, the ball bearings are moveable thereby enabling a required operative diameter to be selected which enables the center pilot to enter the bores of a batch of tubes having a range of internal bores. The center pilot is engageable with a tool holder which is connectable to a machine tool. The tool holder also supports a pair of bevelling tools and a facing tool. In use the center pilot is adjusted to the required operative diameter and the rotating center pilot entered into the bore of the tube, which is clamped externally, to facilitate rotation of the ball bearings around the bore of the tube to center the tool head assembly thereby enabling cutting of the surface of the tube into a predetermined shape to be effected, by the bevelling tools and the facing tool, to prepare the tube for welding.