Coupling parts for connecting a driving device to an expander head

US9943949B2 · kind B2 · utility

Assignee

• ROTHENBERGER AG · DE

Inventors

• Arnd Greding · Hofheim, DE
• Knut Lindner · Kelkheim, DE
• Thoralf Krause · Leipzig, DE

Key dates

• Filing date: Aug 23, 2011
• Grant date: Apr 17, 2018
• Expiry date: Jan 4, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T403/7005
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A coupling for connecting a driving device to an expander head configured to expand pipes and hoses and to be actuated via an expanding mandrel driven by the driving device includes a first coupling part associated with the driving device and a second coupling part associated with the expander head. The first coupling part includes a through-hole that acts as a passage for the expanding mandrel and radially outwardly projecting circumferential portions disposed at a circumference, a rear face of the circumferential portions including at least one contact face. When connected, the coupling parts are disposed along an axis along which the expanding mandrel is movable for the actuation of the expander head. The second coupling part includes at least one counter-portion configured to act on a respective one of the at least one contact face of the circumferential portions.