Abstract: In a two chamber cartridge with chambers arranged axially one after the other, wherein the front chamber in a front part of the cartridge interior is divided by a double wall insert into an outer partial chamber and an inner partial chamber which are both closed at the rear ends by pistons and the rear chamber is formed by a beaker which is inserted into the rear of the cartridge and has a beaker bottom with a pin extending from the beaker bottom through an annular piston closing the beaker, the rear end of the double wall insert abuts the annular piston closing the beaker and the annular piston includes passages leading to gap between the two spaced walls of the double wall insert and the two front partial chambers and the intermediate space are in communication with a mouthpiece space at the front end of the cartridge.

Abstract: In a cartridge closure with opening and closing means comprising a mouth piece with an open end and a closure part having a sleeve portion axially movably supported on the mouthpiece, a transverse wall is supported by support webs in axially spaced relationship from the open end of the mouthpiece and the closure part includes a neck portion of a smaller diameter than the sleeve portion with a transition area between the neck portion and the sleeve portion which includes a conical seal surface area which, in the closing position of the sleeve portion, sealingly engages a circumferential edge of the transverse wall.

Abstract: In a cartridge closure with opening and closing means comprising a mouth piece with an open end and a closure part having a sleeve portion axially movably supported on the mouthpiece, a transverse wall is supported by support webs in axially spaced relationship from the open end of the mouthpiece and the closure part includes a neck portion of a smaller diameter than the sleeve portion with a transition area between the neck portion and the sleeve portion which includes a conical seal surface area which, in the closing position of the sleeve portion, sealingly engages a circumferential edge of the transverse wall.

Abstract: In a plastic injection anchoring sleeve having an essentially cylindrical sleeve body with a closed front end and an open opposite end for the insertion of an anchoring bolt, the sleeve wall has a plurality of openings closed by flaps which are formed integrally with the sleeve and pivotally supported thereby at their front ends, the flaps being provided with axially extending ribs projecting radially inwardly and having inclined front and rear end portions forming ramps for lifting the flaps outwardly and out of the openings when the sleeve body is removed axially from a molding core after injection molding, or when an anchor bolt is inserted into the sleeve body.

Abstract: In a plastic injection anchoring sleeve having an essentially cylindrical sleeve body with a closed front end and an open opposite end for the insertion of an anchoring bolt, the sleeve wall has a plurality of openings closed by flaps which are formed integrally with the sleeve and pivotally supported thereby at their front ends, the flaps being provided with axially extending ribs projecting radially inwardly and having inclined front and rear end portions forming ramps for lifting the flaps outwardly and out of the openings when the sleeve body is removed axially from a molding core after injection molding, or when an anchor bolt is inserted into the sleeve body.