CLAMPING TOOL AND HOLE SAW APPARATUS

Apparatus (10) and method for using a portable tool (20) for assisting th e making of holes in pipes (12) to prepare for interconnected branch or cros s lines. The apparatus includes a guide member (24) and a plurality of bushi ngs (52, 52a, 52b, Fig. 5) able to accommodate a plurality of hole saws...

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Bibliographische Detailangaben
Hauptverfasser:	MANTZ, JACK I, PERKOVICH, MICHAEL P, NERDERMAN, STANLEY J
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING BORING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HAND TOOLS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING MACHINE TOOLS MANIPULATORS MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PIPES PORTABLE POWER-DRIVEN TOOLS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING TRANSPORTING TURNING WEAPONS
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Beschreibung
Zusammenfassung:	Apparatus (10) and method for using a portable tool (20) for assisting th e making of holes in pipes (12) to prepare for interconnected branch or cros s lines. The apparatus includes a guide member (24) and a plurality of bushi ngs (52, 52a, 52b, Fig. 5) able to accommodate a plurality of hole saws (22, 22a, 22b, Fig. 5) of varying diameters. The apparatus includes a stop membe r (46) to prevent inadvertent sawing of the opposite internal pipe wall. The apparatus includes a drill bit (40a, Fig. 4) able to span the internal diam eter of the pipe to create a pilot hole (50) to mark the centerline of the c ross hole to be sawed.