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US 5,092,411 AGranted
Drilling apparatus
AssigneeRudolf Hausherr & Sohne GmbH & Co. KG
InventorsHeinrich-Rudolf Hausherr, Friedhelm Eckey
Life of this patent
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Abstract
A drilling apparatus, especially for drilling blast holes, includes a carriage, a drilling rod, a pressure-operated drive system movable along the carriage for transmitting a back and forth rotation to the drilling rod, a flushing head arranged on the carriage and movable either with or apart from the drilling rod, and a hydraulically operated in-hole hammer arranged on a front end of the drilling rod.
Claims20
A drilling apparatus comprising:
- a carriage;
- at least one drilling rod having front and rear ends;
- a pressure-operated drive system for transmitting a back and forth drive movement to said drilling rod, said pressure-operated drive system being movable on said carriage;
- a flushing head arranged on said carriage communicating with said rear end of said drilling rod detachable from or displaceable with said drilling rod;
- and
- a hydraulically operated in-hole hammer arranged on said front end of said drilling rod.
3 more elements
Dependencies are inferred from the claim text.