B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
B60T 8/36 (2006.01) B60T 8/34 (2006.01) B60T 13/68 (2006.01) B60T 15/02 (2006.01) F16K 29/00 (2006.01)
Patent
CA 2383503
An improved, air tight valve seat (42) for a pneumatic brake system is achieved by using a plastic valve seat that is coined by the valve member (30). The valve member is a harder material, for example metal, than the thermo-plastic valve seat. The valve member is brought to an elevated temperature less than the melting point of the valve seat. The valve member engages the valve seat, coining the desired surface of the valve seat to conform it to the valve member. The heated valve member then remains in the valve assembly (10) after coining.
Cette invention se rapporte à un siège de valve étanche à l'air, amélioré (42), pour système de frein pneumatique, que l'on obtient en utilisant un siège de valve en plastique matricé par l'élément valve (30). L'élément valve est constitué par un matériau plus dur, par exemple du métal, que le matériau du siège de valve thermoplastique. L'élément valve est porté à une température élevée inférieure au point de fusion du siège de valve. L'élément valve vient en contact avec le siège de valve, matriçant ainsi la surface souhaitée du siège de valve pour lui donner la forme de l'élément valve. L'élément valve chauffé reste ensuite dans l'ensemble valve (10) après matriçage.
Herbst Robert J.
Ho Thanh
Tober Michael David
Alliedsignal Inc.
Bendix Commercial Vehicle Systems Llc
Macrae & Co.
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