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US 5,332,269 AGranted
Connecting device for plastic tubes and method for connecting a plastic tube
AssigneeHewing GmbH
InventorKarl G. Homm
Life of this patent
Estimating the term…
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AssigneeHewing GmbH
InventorKarl G. Homm
Estimating the term…
The connecting device comprises a connecting body (12) and at least one connecting piece (20) adapted for having plugged thereon the end portion (24) of the plastic tube (14) to be connected. The outer diameter of the connecting piece (20) is slightly larger than the inner diameter of the plastic tube (14). Prior to plugging the plastic tube (14) onto the connecting piece (20), a pressing sleeve (28) is shifted onto the plastic tube (14). The inner diameter of the pressing sleeve (28) is selected such that the pressing sleeve (28) can be pressed onto the end portion (24) of the plastic tube (14) plugged on the connecting piece (20). During this process, the plastic tube (14) is displaced in axial direction until its forward end is received in a receiving groove (46) annularly surrounding the connecting piece (20) and being open towards the plastic tube (14). The receiving groove (46) is inclined with respect to the axis ( 50) of the connecting body (12), with the annular diameter of the receiving groove (46) decreasing with increasing depth.
A connecting device for plastic tubes comprising a connecting body (12) which includes at least one connecting piece (20) having slid thereon an end portion (24) of a plastic tube (14), an outer diameter of said connecting piece (20) being larger than an inner diameter of the plastic tube (14), the connecting body (12) having formed therein an annular receiving groove (46) surrounding the connecting piece (20) and being opened in a direction toward a free end of the connecting piece (20) for receiving the end portion (24) of the plastic tube (14), the receiving groove (46) having a diameter decreasing with increasing depth of the receiving groove (46), and pressing sleeve means (28;
A connecting method of connecting a plastic tube (14) to a connecting piece (20) of a connecting body (12) comprising the steps of positioning an end portion (24) of the plastic tube (14) in generally external telescopic relationship to the connecting piece (20) and internal telescopic relationship to a sleeve (28;
Dependencies are inferred from the claim text.