Patent ID: 11858716
Assignee: HILTI AKTIENGESELLSCHAFT
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 14:
15. A system for storing and dispensing a flowable multi-component composition, comprising:
a coaxial cartridge having
a hollow-cylindrical cartridge inner wall,
a cartridge outer wall which is arranged coaxially around said cartridge inner wall and is cylindrical at least on an inside,
an inner chamber for a first component of the multi-component composition that is delimited radially by the cartridge inner wall, and
an outer chamber for a second component of the multi-component composition that lies radially between the cartridge inner wall and the cartridge outer wall, and
a cartridge front wall which firmly closes the inner chamber and the outer chamber on an end face of the coaxial cartridge and has a dispensing opening in each of the inner chamber and the outer chamber; and
a support structure which is designed to receive and hold the coaxial cartridge when the multi-component composition is pressed out of said coaxial cartridge, and for this purpose has a side wall which is shaped at least partly like a tube portion and is at least partly closed on a first end face by a support structure front wall designed to support the cartridge front wall;
wherein an inner diameter of the side wall is varied or can be adjusted in an axial and/or radial direction of the support structure in such a way that an annular gap between the cartridge outer wall and the side wall is created, or can be adjusted when the coaxial cartridge is inserted into and removed from the support structure, and a tight fit of the side wall against the cartridge outer wall is created or can be adjusted over the duration of a pressing-out process;
wherein the cartridge outer wail is conical on an outside and widens toward the cartridge front wall at a predetermined cone gradient;
wherein the support structure front wall is designed as a reversibly closable cover for opening the support structure to insert the coaxial cartridge via the first end face of the support structure and for closing the support structure for the duration of the pressing-out process;
wherein the side wall of the support structure comprises a cylindrical outer tube and an inner tube which is inserted into said outer tube and mounted in an axially shiftable manner therein
wherein the inner tube widens conically on an inside toward the support structure front wall at the same cone gradient as the cartridge outer wall and has the same inner diameter on the support structure front wall as an outer diameter of the cartridge outer wall on the cartridge front wall; and
wherein the support structure has an axial pressure device on a second end face that is designed to press the inner tube against the closed cover.