LESTER J BLAHO
Engineers in Ambridge, PA
License number
Pennsylvania PE007906E
Category
Engineers
Type
Professional Engineer
Address
Address
Ambridge, PA 15003
Professional information
Inside-Tube Scarfing Tool
US Patent:
4682921, Jul 28, 1987
Filed:
Nov 8, 1985
Appl. No.:
6/796650
Inventors:
Lester J. Blaho - Ambridge PA
Assignee:
Pittsburgh Tube Company - Monaca PA
International Classification:
B23D 108
US Classification:
409299
Abstract:
A scarfing tool for scarfing the inside of a tube-like member in which an elongated body is adapted for attachment to the end of an impeder rod. The body includes a cutting tool and a pair of spaced apart rollers aligned with the cutting tool. A thrust roller is pivotably mounted to the side of the body opposite from the cutting tool and rollers to force the cutting tool against the inner area of the tube member to be scarfed. A pair of first and second hydraulic means having associated pistons which are connected to a common source of hydraulic fluid. The first hydraulic piston is operably connected to said thrust roller for actuating said roller into extended contact with the inner tube member and the second piston is operably connected to a bias means to work against said means as the thrust roller is extended by the first hydraulic piston.