Patent ID: 11883885
Assignee: SCHOTT PHARMA SCHWEIZ AG
Field: Machine tools (Mechanical engineering)
Classification: CPC B  C  Y | IPC B  C

Claim 16:
17. A retention chuck for glass pipes, comprising:
a central supply channel for the glass pipes, the central channel having a lower end and a center line;
a plurality of clamping jaws arranged at the lower end and distributed around the center line, wherein the plurality of clamping jaws have a spacing from the center line that is adjustable;
an actuation element having guiding arms, where each of the guiding arms has a groove formed therein, the guiding arms protruding radially outward from the actuation element;
a coupling element that couples the plurality of clamping jaws to the actuation element, the coupling element comprises a plurality of levers, each lever being connected in an articulated manner to the actuation element and to a respective one of the plurality of clamping jaws; and
a guiding sleeve for each of the plurality of clamping jaws, the guiding sleeve guiding the common adjustment of plurality of clamping jaws, respectively, perpendicularly, radially inwardly relative to the center line,
wherein each lever comprises a first leg angled with respect to a second leg, wherein the first leg is connected to the actuation element in an articulated manner and the second leg is connected to the respective one of the plurality of clamping jaws in an articulated manner,
wherein the first leg has a pin that is slidingly movably guided in the groove of the actuation element, and wherein the second leg has a pin that is slidingly movably guided in a groove of the respective one of the plurality of clamping jaws.