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

Claim 4:
5. The system according to claim 1, wherein the closing and opening mechanism for the slit is designed as a wedge system, comprising:
an axially slit inner wedge consisting of two wedge halves which are attached on an outside to the tube on both sides of the slit and taper in the axial direction of the tube; and
an outer wedge which encloses the inner wedge on an outside, and can be shifted axially on said inner wedge and has two opposite wedge-shaped inner flanks which face the inner wedge and, when the outer wedge is axially shifted in one direction, pushes the two wedge halves of the inner wedge toward one another in a circumferential direction until the slit in the tube closes as a result, while axially shifting the outer wedge in the other direction allows the inner wedge and the slit in the tube to open again.