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US 7,028,877 B2Granted
Combustion—operated working tool, in particular a setting tool for fastening elements
AssigneeHilti Aktiengesellschaft
InventorsThomas Sperrfechter, Jens Neumann, Norbert Heeb, Gerhard Ehmig, Tilo Dittrich
Life of this patent
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Abstract
A combustion-operated working tool having a housing body (1), which has a cylindrical recess (5) and a piston chamber (2) connecting therewith for receiving a piston (3); an impact plate (8), which is arranged opposite to and at a distance to the cylindrical recess (5) and which can be displaced towards and away from the housing body (1), and a packing sleeve (12) arranged inside and elastically mounted, projecting out of the cylindrical recess (5).
Claims22
A combusting-operated working tool for driving in fastening elements, comprising:
- a housing body (1)having a cylindrical recess (5) and a piston chamber (2) for receiving a piston (3) and communicating with the cylindrical recess (5);
- an impact plate (8) located opposite the cylindrical recess (5) at a distance therefrom and displaceable toward and away from the housing body (1);
- a packing sleeve (12) for receiving a tool-operating cartridge (10) and displaceably arranged in the cylindrical recess (5) and projecting therefrom;
- and
- spring means for biasing the packing sleeve (12) against the impact plate (8).
2 more elements
Dependencies are inferred from the claim text.