Patent · US Active

Direct drill bit drive for tools on the basis of a heat engine

US9328559B2 · kind B2 · utility

18Cited by

4References

15Claims

0Family size

Inventors

Marcus Schwarz · Lampertheim, DE
Ulf Kirsten · Nossen, DE
Matthias Reich · Jena, DE
Silke Röntzsch · Prüm, DE
Florian Mertens · Birmingham, US

Key dates

Filing date	Oct 21, 2011
Grant date	May 3, 2016
Priority date	—
Expiry date	Mar 18, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02G1/0435
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.