Abstract: The invention relates to a process for producing fiber-reinforced flat semifinished products (3) based on a polyamide matrix, comprising the following steps: (a) saturation of textile structures (15) with a mixture comprising molten lactam, catalyst, and optionally activator, (b) cooling of the saturated textile structures (25), and (c) finishing of the cooled textile structures to give the fiber-reinforced flat semifinished product (3). The invention further relates to a process for producing a component made of the fiber-reinforced flat semifinished product.

Abstract: A process for crosslinking polyamides by reacting a compound of the general formula R1R2C?CR3—X in which R1, R2 and R3 are each independently hydrogen or an organic radical with a lactam A at a temperature of (?30) to 150° C., and then reacting with a lactam B, a catalyst and an activator at a temperature of 40 to 240° C.

Abstract: The present invention relates to open-cell foams filled with polyamide and also to a production process therefor.

Abstract: A process for producing an activated monomer composition comprising at least one lactam and/or lactone, one catalyst, and one activator permits storage of the resultant monomer composition, since this is stable with respect to polymerization. Said monomer composition is used inter alia in producing a polyamide molding via ring-opening, anionic polymerization.

Abstract: In a plug-in pump fuel injection system of an internal combustion engine, wherein for each cylinder of the internal combustion engine a plug-in fuel injection pump is provided, each having a pump housing with a fuel feed channel and a fuel return channel, an annular plate provided with openings is arranged in a circumferential groove of the fuel return channel which extends around the pump housing of each plug-in pump and which forms a part of the fuel return channel of the respective plug-in fuel pump in order to inhibit the formation of pressure oscillations in the fuel return channel.

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.

Abstract: A connecting piece (1) is disposed between a carburetor (4) and an inlet channel (3) in an internal combustion engine (2) of a portable handheld motor-driven work apparatus such as a motor-driven chain saw, cutoff machine or the like. The connecting piece functions to compensate for relative position changes between the engine (2) and the carburetor (4). The connecting piece (1) 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) and an engine-end channel section (7). The carburetor-end channel section (6) has a circularly-shaped cross section and the engine-end channel section (7) has a cross section departing from the circular form at the end facing toward the engine (2).

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).