Pipe coupling

US5338071A · kind A · utility

Assignee

• Rasmussen GmbH · DE

Inventors

• Ralf Hohmann · Bruchköbel, DE
• Bernd Kleinhens · Gelnhausen, DE
• Olaf Kohlhaus · Bad Langensalza, DE
• Stephan Mann · Bieber, DE
• Ralf Spors · Bruchköbel, DE

Key dates

• Filing date: Oct 19, 1992
• Grant date: Aug 16, 1994
• Expiry date: Oct 19, 2012

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L37/0985
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

One end portion of a pipe, which has a circumferentially extending external bead at the one end portion, is insertable into the internal sockets of an array of arms which are axially movably received in one end portion of a sleeve. The arms have external surfaces which cooperate with an internal surface of the sleeve to permit limited axial movements of the arms between first and second positions. When in the first positions, the arms can be flexed radially outwardly to thus permit insertion of the bead into or its extraction from the sockets. The internal surface of the sleeve and/or the external surfaces of the arms can but need not be conical, either entirely or in part. The sleeve can be inserted into a bore or hole of a nipple on a radiator or carburetor in a motor vehicle. One or more O-rings or other suitable sealing elements are installed between the sleeve and the external surface of the one end portion of the properly installed pipe. The arms can be of one piece with a ring which is confined in the sleeve between the sealing element or elements and the arms.