Dolmar Gmbh

Andreas Singer

Jochen Schoenhaar

Klaus Matthees

Peter Schulz

Uwe Mehlhose

Hartmut Klare

Torsten Haussner

Walter Siepmann

Marc Walkenhorst

Steffen Brauer

Klaus Loeffler

Jan Lukomski

Ronald Uhlig

Reinhart Doerfelt

In order to create ( ) with a motor ( ) which is fixed to a casing ( ) and which shows an intake port ( ) which is connected with a carbureter ( ) for decoupling oscillations over an elastic suction hose ( ), the carbureter ( ) itself taking its bearing on the casing ( ) by means of fixing means ( ), which avoids the disadvantages of the solution existing up to now and which makes possible especially a vibration-free bearing of the carbureter which is simple, easy servicing and which can be realized at low cost, it is proposed that the bearing of the carbureter ( ) on the casing ( ) is carried out substantially resiliently for damping or reducing the oscillations and the bearing of the resiliently hinged carbureter is carried out by means of an one-point suspension.

Motor saw

A two-cycle internal combustion engine (,) with additional engine oil lubrication system comprises a fuel tank (,) which can be filled with fuel through a filling opening which can be closed with a fuel tank cap (,), as well as an engine oil tank (,) which can be filled with engine oil through a filling opening which can be closed with an engine oil tank cap (,). A regular checking of the oil-level in the engine oil tank (,) is promoted by the fact that both tanks (,) with their tank caps (,) are so configured that, when filling the fuel tank (,), the operating person's attention is drawn to the engine oil tank (,).

Two-stroke internal combustion engine with an additional engine-oil lubricating system

A tensioning device for a chain or a belt drive for a motor of a hand machine tool, especially for a chain saw or a grinding or abrasive cutting-off machine, with a longitudinally movable bracket, such as a bracing or an arm, which can be fixed together with a cover with at least one bolt with a screwable nut to a casing or to another part of the hand machine tool, whereby the tensioning device has an adjusting screw extending in the longitudinal direction of the bracket on which a rider screw is movable to-and-fro by rotating the adjusting screw, the rider screw having a trunnion extending through an opening of the bracket so that, for tensioning the chain or the belt drive, the bracket follows a movement of the rider screw. Here a length of the trunnion is configured such that, the cover being set upon the hand machine tool, and the bracket being placed between the cover and the hand machine tool, the bolt projects sufficiently far through the cover for screwing on the nut only if the trunnion penetrates into the opening of the bracing.

Tensioning device for a chain or a belt drive for a motor of a hand machine tool

The invention relates to a driving device for a motor driven vegetation cutter or the like with a two cycle engine showing an injection valve (,), a coupling placed in a coupling box (,), air intake and air blow-off devices, a fuel pump (,), a starter box (,) as well as eventual other additional sets. It is proposed so as to create a compact arrangement of the parts of said driving device with an optimal cooling and combustion to place the coupling box (,) and the starter box (,) on opposed sides of the two cycle engine and to direct the injection valve (,) with its jet direction onto the cylinder head or the ignition plug (,).

Driving device for a motor scythe

The invention refers to a driving apparatus for a lawn trimmer with a two-stroke motor having an injection valve, a coupling power output, air intake and exhaust gas discharge devices and a fuel pump as well as other possible additional components. For providing a compact construction and for guaranteeing the operativeness of the motor by fuel cooling and specific air guiding, the injection valve and a cooling air fan are placed on the same side of the motor cylinder block as the output coupling with the injection valve having a nozzle jet orientation directed to the ignition plug.

Driving device for a lawn trimmer

A circuit arrangement (,) for the batteryless power supply of the electronic control of a portable machine driven by an internal combustion engine, which machine possesses a d.c. voltage generator driven by the internal combustion engine, which delivers a generated voltage dependent on the number of revolutions of the internal combustion engine, which is transferred to a rated d.c. voltage (Vcc). The circuit arrangement (,) includes a first rectifier circuit (D,, C,), which converts the generator voltage (Ug) into an intermediate d.c. voltage (Uz), which permits the same, without booster batteries, to reliably and controllably supply the electronics of an engine-driven machine, especially in the starting phase, with the requisite rated d.c. voltage.

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Fraureuth, Germany

Andreas Singer