Combustion-engined tool
First Claim
1. A portable, combustion-engined tool, comprising a collapsible combustion chamber (1);
- a movable separation plate (18) located in the combustion chamber (1) for dividing the combustion chamber (1), in an expanded position of the combustion chamber, in a forechamber section (21) and at least one further chamber section (22), the separation plate (18) having a plurality of through-openings (38) for communicating the forechamber section (21) with the at least one further chamber section (22);
a movable combustion chamber wall (14) arranged parallel to the separation plate (18) for limiting, together with the separation plate (18), the forechamber section;
an ignition device (52) located in the forechamber (21); and
collapse control means (19, 20, 33) for controlling movement of the separation plate (18) and the movable wall (14), after combustion of the gas mixture in the combustion chamber (1), so that first, the forechamber section (21) collapses and then, the at least one further chamber section (22) collapse,wherein the collapse control means (19, 20, 33) comprises means for preloading the movable wall (14) and the separation plate (18) relative to each other, and wherein the collapse control means (19, 20, 33) comprises a lug (19) secured on the separation plate (18) and extending through the movable wall (14), and wherein the preloading means comprises a compression spring (33) arranged between a free end of the lug (19) and the movable wall (14).
1 Assignment
0 Petitions
Accused Products
Abstract
A portable, combustion-engined tool including a collapsible combustion chamber (1) having a movable separation plate (18) for dividing the combustion chamber (1), in an expanded position of the combustion chamber, in a forechamber section (21) and at least one further chamber section (22), a movable combustion chamber wall (14) arranged parallel to the separation plate (18) for limiting, together with the separation plate (18), the forechamber section, an ignition device (52) located in the forechamber section (21), and a collapse control device (19, 20, 33) for controlling movement of the separation plate (18) and the movable wall (14) after the combustion of the gas mixture in the combustion chamber.
35 Citations
5 Claims
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1. A portable, combustion-engined tool, comprising a collapsible combustion chamber (1);
- a movable separation plate (18) located in the combustion chamber (1) for dividing the combustion chamber (1), in an expanded position of the combustion chamber, in a forechamber section (21) and at least one further chamber section (22), the separation plate (18) having a plurality of through-openings (38) for communicating the forechamber section (21) with the at least one further chamber section (22);
a movable combustion chamber wall (14) arranged parallel to the separation plate (18) for limiting, together with the separation plate (18), the forechamber section;
an ignition device (52) located in the forechamber (21); and
collapse control means (19, 20, 33) for controlling movement of the separation plate (18) and the movable wall (14), after combustion of the gas mixture in the combustion chamber (1), so that first, the forechamber section (21) collapses and then, the at least one further chamber section (22) collapse,wherein the collapse control means (19, 20, 33) comprises means for preloading the movable wall (14) and the separation plate (18) relative to each other, and wherein the collapse control means (19, 20, 33) comprises a lug (19) secured on the separation plate (18) and extending through the movable wall (14), and wherein the preloading means comprises a compression spring (33) arranged between a free end of the lug (19) and the movable wall (14). - View Dependent Claims (5)
- a movable separation plate (18) located in the combustion chamber (1) for dividing the combustion chamber (1), in an expanded position of the combustion chamber, in a forechamber section (21) and at least one further chamber section (22), the separation plate (18) having a plurality of through-openings (38) for communicating the forechamber section (21) with the at least one further chamber section (22);
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2. A portable, combustion-engined tool, comprising a collapsible combustion chamber (1);
- a movable separation plate (18) located in the combustion chamber (1) for dividing the combustion chamber (1), in an expanded position of the combustion chamber, in a forechamber section (21) and at least one further chamber section (22), the separation plate (18) having a plurality of through-openings (38) for communicating the forechamber section (21) with the at least one further chamber section (22);
a movable combustion chamber wall (14) arranged parallel to the separation plate (18) for limiting, together with the separation plate (18), the forechamber section, an ignition device (52) located in the forechamber (21); and
collapse control means (19, 20, 33) for controlling movement of the separation plate (18) and the movable wall (14), after combustion of the gas mixture in the combustion chamber (1), so that first, the forechamber section (21) collapses and then, the at least one further chamber section (22) collapses,wherein the collapse control means provide for adjusting friction between the movable wall and the separation plate and another wall (2) of the combustion chamber (1).
- a movable separation plate (18) located in the combustion chamber (1) for dividing the combustion chamber (1), in an expanded position of the combustion chamber, in a forechamber section (21) and at least one further chamber section (22), the separation plate (18) having a plurality of through-openings (38) for communicating the forechamber section (21) with the at least one further chamber section (22);
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3. A portable, combustion-engined tool, comprising a collapsible combustion chamber (1);
- a movable separation plate (18) located in the combustion chamber (1) for dividing the combustion chamber (1), in an expanded position of the combustion chamber, in a forechamber section (21) and at least one further chamber section (22), the separation plate (18) having a plurality of through-openings (38) for communicating the forechamber section (21) with the at least one further chamber section (22);
a movable combustion chamber wall (14) arranged parallel to the separation plate (18) for limiting, together with the separation plate (18), the forechamber section;
a fixed bottom (3) for limiting, together with the separation plate (18), the at least one further chamber section (22);
an ignition device (52) located in the expanded position of the combustion chamber, in the forechamber section (21); and
collapse control means (19, 20, 33) for controlling movement of the separation plate (18) and the movable wall (14) in a direction toward the fixed bottom (33), after combustion of the gas mixture in the combustion chamber (1), so that first, the forechamber section (21) collapses and then, the at least one further chamber section (22) collapses. - View Dependent Claims (4)
- a movable separation plate (18) located in the combustion chamber (1) for dividing the combustion chamber (1), in an expanded position of the combustion chamber, in a forechamber section (21) and at least one further chamber section (22), the separation plate (18) having a plurality of through-openings (38) for communicating the forechamber section (21) with the at least one further chamber section (22);
Specification