Direct drill bit drive for tools on the basis of a heat engine
OwnerMarcus Schwarz, Ulf Kirsten +3inventors
InventorsMarcus Schwarz, Ulf Kirsten, Matthias Reich, Silke Röntzsch, Florian Mertens
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Abstract
In a direct drill bit drive for tools for comminuting brittle materials and penetrating into brittle materials by percussive impact on the basis of a heat engine operated with a gaseous working medium, the heat engine is a hot gas engine operating in accordance with a real Stirling cycle process.
Claims15
Direct drill bit drive for percussive tools to comminute or penetrate brittle materials on the basis of a heat engine that works with a gaseous working fluid,
- specified by
- the fact that the heat engine works according to a real thermodynamic Stirling cycle.
Direct drill bit drive for percussive deep drilling on the basis of a heat engine that works with a gaseous working fluid,
- specified by
- the fact that the heat engine works according to a real thermodynamic Stirling cycle and the average pressure within the engine is adapted to the pressure of the drilling environment via a gas-filled pressure exchange vessel (65) that is integrated into the drill string which affords an intake or outflow of working medium into the engine due to expulsion from or expansion into the exchange vessel,
- or
- a gas-generating and absorbing unit that is integrated into the drill string which affords generation/absorption of working medium from a/into a solid via a chemical reaction.
Dependencies are inferred from the claim text.