Combustion-engined tool having a braking device for its piston
AssigneeHiltie Aktiengeselschaft
InventorsJoachim Thieleke, Kaveh Towfighi, Iwan Wolf
Life of this patent
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Abstract
A portable, combustion-engined tool including a combustion chamber (1), a piston (8) adjoining the combustion chamber (1), with a pressure build-up in the combustion chamber (1) providing for movement of the piston (8) from its initial position, in which the piston adjoins the combustion chamber (1), away from the combustion chamber (1), a brake device (43) for retaining the piston (8) substantially in its initial position during build-up of pressure in the combustion chamber (1), and elements for changing a braking force applied to piston (8).
Claims9
A portable, combustion-engined tool, comprising a combustion chamber (1);
- a piston (8) adjoining the combustion chamber (1), a pressure build-up in the combustion chamber (1) providing for movement of the piston (8) from an initial position thereof, in which the piston adjoins the combustion chamber (1), away from the combustion chamber (1);
- brake means (43) for retaining the piston (8) substantially in the initial position thereof during build-up of pressure in the combustion chamber (1);
- and means for changing a braking force applied by the braking means (4) to the piston (8).
Dependencies are inferred from the claim text.