Abstract: An exhaust-gas muffler (1) has a housing (2) through which at least one sleeve (11) projects. At one end, the sleeve (11) has an attachment opening (10) and at the opposite-lying end has an access opening (14). To avoid a contamination of the sleeve (11) during operation, a plug (15, 25, 35, 40, 45, 55) of a pressed metal wire is arranged in the access opening (14).

Abstract: A two-stroke engine has a cylinder with a combustion chamber and a piston reciprocatingly supported in the cylinder. A crankshaft is rotatably supported in a crankcase and driven by the piston. At least one transfer passage connects the crankcase in at least one position of the piston with the combustion chamber and has a piston-controlled transfer port that opens into the combustion chamber and an opening that opens into the crankcase. A mixture inlet opens into the crankcase. An outlet is provided at the combustion chamber. The transfer port and the opening are displaced relative to each other in a circumferential direction of the cylinder. At least one wall section of the transfer passage forms an undercut when viewed from the crankcase in a direction of a longitudinal cylinder axis of the cylinder and is delimited by a separate component inserted into the cylinder from a side facing the crankcase.

Abstract: A hand-guided power tool has a drive motor and a tool in driving connection with the drive motor. At least one handle is provided for guiding the power tool in operation. At least one antivibration element functionally connects the at least one handle and the drive motor. The at least one antivibration element has a coil spring and a guide, wherein the coil spring has an end connected to the guide. The coil spring has a first radial spacing relative to the guide in a first radial direction and has a second radial spacing relative to the guide in a second radial direction, wherein the second spacing is smaller than the first spacing or is zero.

Abstract: An internal combustion engine has a cylinder which has a cylinder longitudinal axis. The internal combustion engine has at least one cooling fin. In order to route the cable in a defined fashion so that the internal combustion engine can be arranged even in a constricted installation space, a cable retainer is provided which is arranged on at least one cooling fin of the internal combustion engine and which retains at least one cable. A cable retainer for securing at least one cable to an internal combustion engine has at least one receptacle for at least one cable and at least one means for positioning the cable retainer on the internal combustion engine.

Abstract: An apparatus for the production of ionized oxygen and ozone from pure oxygen. An adjustable high voltage power supply is connected to an ozone generator having at least one ozone generator therein. The HV power supply has a relatively low voltage setting for producing negative ionized oxygen and a relatively high voltage setting for producing ozone. A negative ionizer may be included to increase the concentration of negative ionized oxygen. Outputted gasses are directed to a hermetically sealed envelope positioned around and in spaced relation from the surface of a patient's injury. If the wound is infected, ozone is selectively used to treat the infection for a first predetermined period of time sufficient to neutralize the infection. After the wound is treated with ozone, negative ionized oxygen is selectively used to treat the wound for a second predetermined period of time sufficient to enhance the healing of the wound.

Abstract: A hand-held power tool has at least one operating medium tank having at least one opening. At least one connecting conduit is arranged external to the operating medium tank. At least one connecting member is inserted into the opening, wherein the at least one connecting conduit is connected to the at least one connecting member. Securing devices that secure a rotational position of the at least one connecting member in the opening are provided.

Abstract: A chain guard for a motor-driven chain saw has a narrow casing with a front end and a back end. The casing has two parallel side walls and an upper wall and a lower wall connecting the side walls to each other. The casing is closed at the front end thereof and defines an opening at the back end. A device is provided on the casing for attaching the chain guard to the clothing of the operator, a rope, a carabiner or the like.

Abstract: An internal combustion engine has a starter device, wherein the starter device has a drive member and a driven member and a locking mechanism for coupling the drive member and the driven member to one another for starting the internal combustion engine. The locking mechanism has at least one pawl that is pivotably supported on the driven member. For decoupling the drive member and the driven member, the at least one pawl is pivoted outwardly relative to an axis of rotation of the starter device. The at least one pawl has at least one pivot position in which the at least one pawl contacts at least one contact area of the driven member. The at least one pawl has at least one cover covering the at least one contact area.

Abstract: An exhaust-gas muffler (1) has a housing (2) through which at least one sleeve (11) projects. At one end, the sleeve (11) has an attachment opening (10) and at the opposite-lying end has an access opening (14). To avoid a contamination of the sleeve (11) during operation, a plug (15, 25, 35, 40, 45, 55) of a pressed metal wire is arranged in the access opening (14).

Abstract: A hand-guided power tool has a drive motor and a tool in driving connection with the drive motor. At least one handle is provided for guiding the power tool in operation. At least one antivibration element functionally connects the at least one handle and the drive motor. The at least one antivibration element has a coil spring and a guide, wherein the coil spring has an end connected to the guide. The coil spring has a first radial spacing relative to the guide in a first radial direction and has a second radial spacing relative to the guide in a second radial direction, wherein the second spacing is smaller than the first spacing or is zero.

Abstract: A hand-held power tool has at least one operating medium tank having at least one opening. At least one connecting conduit is arranged external to the operating medium tank. At least one connecting member is inserted into the opening, wherein the at least one connecting conduit is connected to the at least one connecting member. Securing devices that secure a rotational position of the at least one connecting member in the opening are provided.

Abstract: An internal combustion engine has a cylinder which has a cylinder longitudinal axis. The internal combustion engine has at least one cooling fin. In order to route the cable in a defined fashion so that the internal combustion engine can be arranged even in a constricted installation space, a cable retainer is provided which is arranged on at least one cooling fin of the internal combustion engine and which retains at least one cable. A cable retainer for securing at least one cable to an internal combustion engine has at least one receptacle for at least one cable and at least one means for positioning the cable retainer on the internal combustion engine.

Abstract: An internal combustion engine has a starter device, wherein the starter device has a drive member and a driven member and a locking mechanism for coupling the drive member and the driven member to one another for starting the internal combustion engine. The locking mechanism has at least one pawl that is pivotably supported on the driven member. For decoupling the drive member and the driven member, the at least one pawl is pivoted outwardly relative to an axis of rotation of the starter device. The at least one pawl has at least one pivot position in which the at least one pawl contacts at least one contact area of the driven member. The at least one pawl has at least one cover covering the at least one contact area.

Abstract: A portable handheld work apparatus includes a drive motor configured as an internal combustion engine (1). The work apparatus includes an air filter case (2) arranged in the intake channel of the engine (1). The work apparatus further includes a cover (3) and a locking device (4) for releasably holding the cover (3). An actuating element (6) of the locking device (4) is configured as a slider (7) which is guided so that it is essentially linearly movable.

Abstract: A protective shield (2) is provided for a free-cutting tool (1). The free-cutting tool has a cutterhead (4) rotatable about a rotational axis (3) and carries a cutting filament (5). For a rotating cutterhead (4), the cutting filament (5) rotates in a rotational direction (10), aligns itself approximately radially to the rotational axis (3) and defines a cutting circle (6) having a constructively pregiven nominal radius (R). The cutting radius (6) is at least partially covered by the protective shield (2). A cut-to-length knife (7) having a cutting edge (8) for cutting the cutting filament (5) to length is mounted on the protective shield (2) in the peripheral region thereof. The cut-to-length knife (7) is mounted on the protective shield (2) to be moveable back and forth between a cutting position (11) and a rest position (12).

Abstract: A protective shield (2) is provided for a free-cutting tool (1). The free-cutting tool has a cutterhead (4) rotatable about a rotational axis (3) and carries a cutting filament (5). For a rotating cutterhead (4), the cutting filament (5) rotates in a rotational direction (10), aligns itself approximately radially to the rotational axis (3) and defines a cutting circle (6) having a constructively pregiven nominal radius (R). The cutting radius (6) is at least partially covered by the protective shield (2). A cut-to-length knife (7) having a cutting edge (8) for cutting the cutting filament (5) to length is mounted on the protective shield (2) in the peripheral region thereof. The cut-to-length knife (7) is mounted on the protective shield (2) to be moveable back and forth between a cutting position (11) and a rest position (12).

Abstract: A portable handheld work apparatus includes a drive motor configured as an internal combustion engine (1). The work apparatus includes an air filter case (2) arranged in the intake channel of the engine (1). The work apparatus further includes a cover (3) and a locking device (4) for releasably holding the cover (3). An actuating element (6) of the locking device (4) is configured as a slider (7) which is guided so that it is essentially linearly movable.

Abstract: A connecting piece (1) between a carburetor (4) and an inlet channel (3) is disposed in an internal combustion engine (2) of a portable handheld motor-driven work apparatus such as a motor-driven chain saw, cutoff machine, et cetera. The connecting piece (1) serves to compensate for relative position changes between the engine (2) and the carburetor (4). The connecting piece (1) is made of elastic material and has an expansion fold (5) which functions to compensate for length changes. The length of the connecting piece can be changed from a pressed length (a) to an expanded length (b). The expansion fold (5) partitions the connecting piece (1) into a carburetor-end section (6) and into an engine-end section (7).

Abstract: An elastic connecting piece (1) is mounted between a carburetor (4) and an inlet channel (3) of an internal combustion engine (2). The engine (2) is especially an engine of a portable handheld motor-driven work apparatus such as a motor-driven chain saw, cutoff machine or the like. The connecting piece (1) includes a peripherally extending expansion fold (5) arranged between its ends in order to compensate for changes in length. The expansion fold (5) subdivides the connecting piece (1) into a carburetor-end section (6) and into an engine-end section (7). The annular gap (28) of the expansion fold (5) can be bridged by a seal lip (8). The connecting piece (1) includes a peripherally extending seal seat (9) of axial length (g) in the region of the expansion fold (5). The seal lip (8) can be placed in seal-tight contact with the seal seat (9) and substantially closes the expansion fold (5) fluid tight to the interior space of the connecting piece (1).

Abstract: A connecting piece (1) is disposed between a carburetor (4) and an inlet channel (3) in an internal combustion engine of a portable handheld motor-driven work apparatus. The connecting piece functions to compensate for relative position changes between the engine and the carburetor (4), is made of elastic material and includes an expansion fold (5) for compensating for changes in position. The length of the expansion fold (5) is changeable from a collapsed to an expanded length. The expansion fold (5) subdivides the connecting piece (1) into a carburetor-end channel section (6) having a circularly-shaped cross section and an engine-end channel section (7) having a cross section departing from the circular form at the end facing toward the engine. The connecting piece (1) has a constant flow cross section over its entire length when the expansion fold (5) is collapsed.