Abstract: Flange assembly for supporting a structure that provides scavenging air supply to an internal combustion engine at the carburetor to the engine. The assembly includes a thin-body flange that is configured to be abuttingly installed upon an end surface of the carburetor. The carburetor has its combustion air intake or port exposed at an outer surface for intaking air for the combustion process. The thin construction of the flange enables advantageous positioning of the adaptive flange. The relative dimensioning of the thin-body flange also contributes to its low-impact as a modification to air inlet arrangement. A combustion air aperture is provided that extends through the thin-body flange. The combustion air aperture is located in the flange for alignment with the combustion air intake. By this alignment, fluid communication is established across the flange and into the carburetor when the flange is abuttingly installed upon the carburetor.

Abstract: A brake triggering device with a pivotably mounted trigger arm (1) located in connection to a handheld working tool's, mainly a chain saw's (2), rear handle (3), with a throttle control (4) and a handle opening (5) located below the handle (3), so that the trigger arm (1), when the saw changes inclination in relation to the operator's forearm, e.g. at the event of kickback or fall, is actuated by the operator's hand or arm, whereby the trigger arm (1) via a transfer mechanism actuates a brake (9) so that this stops the movement of the saw chain. The pivot (10) of the trigger arm is located in connection to a front (11) or a bottom (12) side of the handle opening (5).

Abstract: The invention refers to a cylinder (1) for a two-stroke, crankcase scavenged combustion engine, comprising an inlet pipe (10) for air/fuel mixture, at least one transfer port (17), and at least one outer connecting port (18) intended to be connected to a connecting duct (not shown), whereby the outer connecting port (18) is arranged so that it can be connected to the mentioned transfer port (17) via a piston ported air passage. The outer connecting port (18) is located below the inlet pipe (10) and at least one wall passage (14) extends from the mentioned outer connecting port (18), obliquely upwards through the cylinder wall, to at least one connecting port (16). This design enables the cooling air to flow freely around the cylinder above the inlet pipe (10), which improves the cooling of the cylinder.

Abstract: The invention relates to a crankcase scavenged internal combustion engine (1) of two-stroke type, comprising a cylinder (2) with an inlet tube (10) for air/fuel mixture and a number of transfer ducts (20), a carburetor (12) connected to the inlet tube (10), and an air inlet (24) provided with a restriction valve (25) whereby a piston ported air passage (23, 22, 26, 21) is arranged between the air inlet (24) and the upper part of the transfer ducts (20). The engine's air inlet (24) extends at least partly below and outside the carburetor (12), resulting in a more compact engine design and improved use of the space around the cylinder. Moreover, the cooling air gets better access to the cylinder.

Abstract: A connecting device (1) for a fuel supply unit (2), such as a carburetor, to a cylinder (3) of an internal combustion engine, said connecting device is mainly composed of a flexible inlet bellow (4) with an inlet duct (5). The bellow (4) has at its one end a first flange part (6), which surrounds the inlet duct and furthest out has a projecting outer edge (7) intended to be pushed upon a projecting inlet stud (8) of the cylinder, and the inlet bellow is at its other end mounted to the fuel supply unit (2). The inlet stud (8) has besides an inlet opening (13) at least one cavity (14) by the side of the inlet opening and the inlet bellow is arranged with at least one from the first flange part (6) projecting nose part (15) intended to protrude into the cavity (14) when the inlet bellow in an axial direction is being pushed upon the inlet stud (8).