Spackling or caulking devices using cartridges for applying spackling or caulking to one or more surfaces or objects and methods of using the same.

A piston for dispensing a flowable component from a cartridge includes a piston having a base body and a venting element. The base body has a passage connecting a component side and an actuation side and has a passage opening. The venting element has an internal connection element and a pin which is partly arranged in the passage opening of the base body. The internal connection element and the pin are connected by a spring element. The pin of the venting element can adopt a sealing position and an aerating position. To enable a secure sealing, the spring element is configured such that it includes an angle of a maximum of 80 with the axial direction in the sealing position of the pin at a connection line to the internal connection element in the direction of an actuation side.

A sealant tube for use in a pneumatic sealant gun for reducing or eliminating air bubbles in the sealant being dispensed. The sealant tube may fit within a hollow sleeve of the pneumatic sealant gun and contains sealant and a slidable plunger. The tube body may include an inner surface, an outer surface opposite the inner surface, a first opening, a second opening opposite the first opening, and pressure release openings formed through the tube body, such that air from a pressurized air source flows into the tube body and between the tube body and the hollow sleeve during use of the pneumatic sealant gun, equalizing pressure on the inner surface and the outer surface of the tube body. A seal or gasket may also be located proximate the second opening of the tube body, for forming an airtight seal between the hollow sleeve and the tube body.

A piston for dispensing a flowable component from a cartridge includes a piston having a base body and a venting element. The base body has a passage connecting a component side and an actuation side and has a passage opening. The venting element has an internal connection element and a pin which is partly arranged in the passage opening of the base body. The internal connection element and the pin are connected by a spring element. The pin of the venting element can adopt a sealing position and an aerating position. To enable a secure sealing, the spring element is configured such that it includes an angle of a maximum of 80 with the axial direction in the sealing position of the pin at a connection line to the internal connection element in the direction of an actuation side.

A cartridge piston has a venting valve and a valve part that is inserted into a front-side recess of the piston, the recess comprising a through opening and a surrounding annular groove. The valve part consists of a central body passing through said through opening and has a projection coacting with a sealing edge and protruding over the back side of the piston. The valve part also consists of a double-walled wall body located in the annular groove and connected to the central body by a front wall, wherein a venting path passes from the piston front side through an air passage into an interspace of the wall body and a filter path formed between an annular wall of the wall body and an annular wall part of the piston provided between said through opening and said groove, and through an annular gap between said wall part and said central body to said sealing edge.

An application device (1) for applying a viscous material onto a substrate and a method for producing the application device (1). The application device (1) includes a ventilation device having an insert (19), which is connected air-tightly to an inner container (3) in the region of a discharge opening (18). An annular gap is formed between the insert (19) and a neck region (6) of the outer casing (2), through which annular gap air can flow from outside into an intermediate space between the outer casing (2) and the inner container (3) and vice versa. The connection between an applicator (4) and the outer casing (2) is also permeable to air and the applicator (4) includes a sealing means (25) that seals off the inner volume of the inner container (3) in an air-tight and leak-proof manner from the intermediate space.

The invention relates to a cartridge system with two containers (2a, 2b) respectively having an outlet connector (4a, 4b), and a common connection section for a mixer (1) having a positioning aperture (7), and with a static mixer (1) with inlet connectors (14a, 14b) and a positioning element (16). The connection section of the cartridge comprises a ring (5) having an inner thread (6) that surrounds the outlet connectors (4a, 4b), whereby the mixer (1) has an outer thread (11). Further, the invention relates to a static mixer (1) for a cartridge system of this type.

The invention relates to a cartridge system with two containers (2a, 2b) respectively having an outlet connector (4a, 4b), and a common connection section for a mixer (1) having a positioning aperture (7), and with a static mixer (1) with inlet connectors (14a, 14b) and a positioning element (16). The connection section of the cartridge comprises a ring (5) having an inner thread (6) that surrounds the outlet connectors (4a, 4b), whereby the mixer (1) has an outer thread (11). Further, the invention relates to a static mixer (1) for a cartridge system of this type.

The invention relates to a cartridge system with two containers (2a, 2b) respectively having an outlet connector (4a, 4b), and a common connection section for a mixer (1) having a positioning aperture (7), and with a static mixer (1) with inlet connectors (14a, 14b) and a positioning element (16). The connection section of the cartridge comprises a ring (5) having an inner thread (6) that surrounds the outlet connectors (4a, 4b), whereby the mixer (1) has an outer thread (11). Further, the invention relates to a static mixer (1) for a cartridge system of this type.

A sealant tube for use in a pneumatic sealant gun for reducing or eliminating air bubbles in the sealant being dispensed. The sealant tube may fit within a hollow sleeve of the pneumatic sealant gun and contains sealant and a slidable plunger. The tube body may include an inner surface, an outer surface opposite the inner surface, a first opening, a second opening opposite the first opening, and pressure release openings formed through the tube body, such that air from a pressurized air source flows into the tube body and between the tube body and the hollow sleeve during use of the pneumatic sealant gun, equalizing pressure on the inner surface and the outer surface of the tube body. A seal or gasket may also be located proximate the second opening of the tube body, for forming an airtight seal between the hollow sleeve and the tube body.