Rock drill

A rock drill for rotary hammers is proposed in which a conveying helix ( 3 ) having main and secondary webs ( 6 to 9 ) is used. A one-piece carbide crown, with its wing-shaped main and secondary lips ( 24 to 27 ), is butt-welded to the conveying helix.

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Bibliographische Detailangaben
1. Verfasser:	FUSS MATHIAS
Format:	Patent
Sprache:	eng
Schlagworte:	BORING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS TRANSPORTING TURNING WORKING CEMENT, CLAY, OR STONE WORKING STONE OR STONE-LIKE MATERIALS
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Beschreibung
Zusammenfassung:	A rock drill for rotary hammers is proposed in which a conveying helix ( 3 ) having main and secondary webs ( 6 to 9 ) is used. A one-piece carbide crown, with its wing-shaped main and secondary lips ( 24 to 27 ), is butt-welded to the conveying helix.