Detachable rapid-action coupling device

Details Detachable rapid-action coupling device Detachable rapid-action coupling device

1999-11-29

2001-11-20

Nicholson, Eric K. (Department: 3627)

Pipe joints or couplings

Essential catch

C285S308000, C285S321000, C285S319000

Reexamination Certificate

active

06318764

ABSTRACT:

The present invention pertains to a detachable rapid-action coupling device of the type described in the preamble of claim
1
. Such a coupling device is known, for example, from EP 0 605 801 B1. Rapid-action coupling devices of this type are, among other things, used in the automobile industry for connecting fuel lines to one another or to plug-in elements that are integrally formed or otherwise mounted onto fuel containers or fuel distributors. In this case, it is not only important to achieve a simple manipulation when producing the connection and an absolutely tight connection after the plug-in element is engaged in the housing of the coupling device, but also it must be possible to easily disengage the coupling if so required. This is achieved in superior fashion with the rapid-action coupling device according to the present invention.
The shape of the housing of the coupling device is defined, among other things, by the circumstances at the given connection point. The housing is not always designed in the form of a linear extension of the plug-in element, but also must be available in angled variations due to constricted space conditions and the installation direction of the fuel lines. In such instances, it may occur that the pressure plates of the retaining elements are difficult to access and the coupling cannot be easily disengaged.
Consequently, the present invention is based on a coupling device known from DE 39 29 723 C2, in which the receptacle housing is realized in the form of a two-part component. In this case, the head part that is equipped with the retaining element can be axially plugged together with the base body that can be connected to the fuel line in captive fashion, with the head part containing a centering ring on the plug-in side, the end surface of which simultaneously serves as an end part for the central section. In order to eliminate the disadvantage of an obstructed access which also exists with this coupling device, the connection between the head part and the base body is produced with the means disclosed in the claim


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