Pipe joints or couplings – Frangible element – Score line or groove
Patent
1990-12-21
1992-04-21
Arola, Dave W.
Pipe joints or couplings
Frangible element
Score line or groove
285110, 285351, 285319, 285921, F16L 3500
Patent
active
051061279
ABSTRACT:
A rapid connection fluid coupling is disclosed, for connecting a first end piece, to which a cooling liquid flow duct or pipe of a motor vehicle engine is fixed, to a second end piece of a testing circuit, heater unit or other vehicle element. The first end piece has a perforator for a closure positioned in the end piece prior to filling the engine with the cooling liquid. The closure comprises a seal with a membrane made from an elastomer material, such as rubber or other similar material, having the general form of a cup with a bottom having weaker zones for tearing the cup after perforation at its center. The zones are formed as a star with radiating arms whose ends are on a circle which defines an annular zone with the periphery. The free end of the lateral wall of the membrane is molded on a frame with an L shaped half cross section and has at least one and preferably two peripheral lips oriented from the end towards the bottom while diverging with respect to the lateral wall. When the two end pieces are interconnected, the second end piece drives the closure into engagement with the perforator to perforate the closure and allow fluid flow through the end pieces.
REFERENCES:
patent: 1933117 (1933-10-01), Markle
patent: 2460981 (1949-02-01), Francisco, Jr. et al.
patent: 2924472 (1960-02-01), Bush
patent: 3844585 (1974-10-01), Sands et al.
patent: 4022496 (1977-05-01), Crissy et al.
patent: 4749214 (1988-06-01), Hoskins et al.
Arola Dave W.
Hutchinson
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