Boiler repair

Details Boiler repair Boiler repair

1987-12-10

1989-05-16

Schran, Donald R.

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

Frictionally engaging sides of opening in work

291574, 83745, 83574, 408237, 408 88, B21D 5302, B23P 600, B23P 1526, B26D 508

Patent

active

048305510

ABSTRACT:
Boiler tube repair apparatus includes elongated guide rail structure for securing to a boiler tube panel adjacent a desired cut region, and three tool assemblies for mounting on the guide rail structure. Each tool assembly includes carriage structure with guide structure for engaging the guide rail structure and support structure on which a tube machining tool is mounted and that defines a tool movement axis dedicated to and coordinated with that tool. Each machining tool includes a drive motor, a manual motor control, a drive shaft and a machining member such as a cutter disc or head.

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patent: 4498820 (1985-02-01), Brennan
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patent: 4633555 (1987-01-01), Legge
patent: 4718201 (1988-01-01), Legge
patent: 4739688 (1988-04-01), Brennan

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