Abstract: A method for manufacturing a throttle valve unit having a housing part and a valve flap part that can move in relation to it includes the steps of injection molding the housing part of a first plastic material in a first cavity, transferring the molded housing part to a second cavity spatially decoupled from the first cavity, and injection molding the movable valve flap part out of a second plastic material in a second mold cavity inside the molded housing part. Before the molded housing part is transferred to the second cavity, it is subjected to an intermediate treatment in order to influence the shrinkage behavior, thereby selectively adjusting the gap geometries between the parts.

Abstract: The present invention relates to a device for transmitting a torque, in particular a pulley connected to an internal combustion engine for transmitting a torque from the internal combustion engine to an accessory, a rotor (10) being rotatably connected with a bearing part (20) of a bearing. According to the invention, the rotor (10) and a circumferential surface (21) of the bearing are at least partially connected via an adhesive bond (25). The invention also relates to a method for producing the device.

Abstract: A method for manufacturing a throttle valve unit having a housing part and a valve flap part that can move in relation to it includes the steps of injection molding the housing part of a first plastic material in a first cavity, transferring the molded housing part to a second cavity spatially decoupled from the first cavity, and injection molding the movable valve flap part out of a second plastic material in a second mold cavity inside the molded housing part. Before the molded housing part is transferred to the second cavity, it is subjected to an intermediate treatment in order to influence the shrinkage behavior, thereby selectively adjusting the gap geometries between the parts.

Abstract: A vane cell vacuum pump has a rotor, in which a plastic vane, which with at least terminal part engages the inner wall of the jacket of a pump housing, is guided longitudinally. The body of the vane comprises a duroplastic and is united with the terminal part, of thermoplastic by an injection-molding operation. With the material comprising the body, high mechanical strength is attained, while with the material of the terminal part, high wear resistance and a low coefficient of friction are attained.

Abstract: A vane cell vacuum pump (10) has a rotor (13), in which a plastic vane, which with at least terminal part (22, 23) engages the inner wall (16) of the jacket of a pump housing (11), is guided longitudinally. The body (21) of the vane (15) comprises a duroplastic and is united with the terminal part (22, 23), of thermoplastic, by an injection-molding operation. With the material comprising the body (21), high mechanical strength is attained, while with the material of the terminal part (22, 23), high wear resistance and a low coefficient of friction are attained.