US 5,090,743 AGranted

Compressible fitting and associated method

AssigneeMannesmann Aktiengesellschaft

InventorHeinz U. Obering

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Abstract

A compressible fitting for the manufacture of a permanent, tight connection between tubes. The fitting has at least one end, which has a hook-shaped cross section and a bead-like configuration, which end holds an O-ring and can be compressed with the tube. An adjacent cylindrical section extending in the longitudinal direction, which is provided at the end with a bead-shaped recess acting as a stop for the flat-ended tube which can be inserted. To create a compressible fitting that can be economically manufactured and still provide rapid connection technology, the invention proposes that the area characterizing the type of fitting is designed as a cast or molded basic body fabricated from a metal or non-metal material, that is connected to a standardized connection piece made of sheet metal, whereby this connection piece has a bead-like end holding an O-ring and an adjacent cylindrical area, which is provided at the end with a bead-like recess acting as a stop for the flat-ended tube which can be inserted.

Claims17

Dependent claims

A connector for fluid conducting tubes comprising:

channeling means having a fluid directing channel, said channeling means for channeling the fluid from a first fluid conducting tube to a second fluid conducting tube;
fluid conducting connector means for being mechanically connected to said channeling means, said connector means for being connected to at least one of the first tube and the second tube;
said connector means being configured to channel the fluid from at least one of the first tube and the second tube to said fluid directing channel of said channeling means;
said channeling means comprising a single piece formed from molded material;
said connector means comprising a rolled metal sheet material;
said connector means comprising means for supporting O-ring means;
said connector means being configured to receive at least one of the first tube and the second tube;
said connector means comprising tube positioning means for positioning at least one of the first tube and the second tube in connection with said fluid directing channel;
said connector means further comprising compressible fitting means, said compressible fitting means for mechanically connecting at least one of the first tube and the second tube to said fluid directing channel of said channeling means;
and
fastening means for integrally and permanently connecting said connector means to said channeling means.

8 more elements

A method for making a connector for fluid conducting tubes, said connector having channeling means, said channeling means having a fluid directing channel, said channeling means for channeling the fluid from a first fluid conducting tube to a second fluid conducting tube, fluid conducting connector means for being mechanically connected to said channeling means, said connector means for being connected to at least one of the first tube and the second tube, said connector means being configured to channel the fluid from at least one of the first tube and the second tube to said fluid directing channel of said channeling means, said channeling means comprising a molded material, said connector means comprising a rolled metal sheet material, said connector means comprising means for supporting O-ring means, said connector means being configured to receive at least one of the first tube and the second tube, said connector means comprising tube positioning means for positioning at least one of the first tube and the second tube in connection with said fluid directing channel, said connector means further comprising compressible fitting means, said compressible fitting means for mechanically connecting at least one of the first tube and the second tube to said fluid directing channel of said channeling means, fastening means for integrally and permanently connecting said connector means to said channeling means, said method comprising the steps of:

molding said channeling means;
forming said connector means from said rolled metal sheet material by bending said sheet material to form a generally cylindrical shape;
forming said fastening means for integrally and permanently connecting said connector means to said channeling means;
forming said O-ring supporting means on said connector means;
and
integrally and permanently connecting said connector means to said channeling means with said fastening means.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/537,443Filed 12 Jun 1990
Priority: DE 391949612 Jun 1989
Granted: 25 Feb 1992
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F16L 13/161
The pipe joint consisting of overlapping extremities having mutually co-operating collars: the pipe or collar being deformed by crimping or rolling
B21C 37/29
Making tube fittings for connecting pipes, e.g. U-pieces: making branched pieces, e.g. T-pieces
B23K 33/006
Filling of continuous seams: for cylindrical workpieces
F16L 13/142
By crimping or rolling from the outside: with a sealing element inserted into the female part before crimping or rolling