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. 09, 1991
Filed:
Apr. 06, 1990
Gerald I Marron, Marple Township, Delaware County, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A compact boring system 20 for machining the interior surface of cylindrical shapes, such as steam turbine valves and rotors in a field situation. The apparatus is designed to set up in the object itself. A boring bar 26 is rotatably disposed in a pair of roller bearing supports 23. A plurality of locating buttons 29 extend radially from the bearing supports 23 to contact the interior of the object and support the apparatus therein. The bearing supports 23 can be secured to the boring bar 26 at any axial location thereon. A machining head 35 is also securable to the boring bar 26 at any axial location, and includes a threaded drive shaft 38 for translating the machining head 35 axially along the bar 26. A cutting tool 56 is disposed in the machining head 35 so as to be radially adjustable with respect to the axis of the bar. A rotary drive-system 153 for rotating the bar 26, and thus the machining head 35, within the bearing supports 23 is provided, the rotary drive also being mountable anywhere along the length of the boring bar.