Patent ID: 11959319
Assignee: EMKA BESCHLAGTEILE GMBH & CO. KG
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 13:
14. A closure actuator for actuating a closure element, the closure element having a threaded pin having a polygonal cross section and a fastening device for fastening the threaded pin to a closing element, wherein the fastening device comprises a fastening element that can be screwed onto the threaded pin; and a back-rotation prevention seal for securing the screwed-on fastening element; wherein the back-rotation prevention seal has a sealing region that seals the threaded pin in relation to the closing element, and wherein the back-rotation prevention seal has a polygonal cutout for receiving the threaded pin so that the back-rotation prevention seal can be nonrotatably coupled to the threaded pin.