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US 2009/0217989 A1Published application
Pressure Relief Device
AssigneeBorg-Warner Corporation
InventorsJean-Louis Magnaval, Jean Armiroli, Pascal Audineau
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AssigneeBorg-Warner Corporation
InventorsJean-Louis Magnaval, Jean Armiroli, Pascal Audineau
Estimating the term…
Pressure relief device (27) usable in a high-pressure fluid circuit for limiting the pressure in the case of a failure of a circuit component, comprising a body (4) and a pusher (3) sliding therein and axially movable by return means (5) in such a way that it drives sealing means (2) of an orifice (9) connecting an upstream chamber (7) receiving a high-pressure fluid and a downstream chamber (10) which is delimited by the body (4), the side of the pusher (3) and the perforated wall of said orifice (9), said upstream chamber (10) comprising at least one fluid discharge opening (12, 12′) and the sealing means (2) being held by the return means (5) in the position closing the orifice (9) below a predetermined pressure threshold in the upstream chamber (7). The pusher (3) is devoid of axial through channels for the fluid, slides in the body (4) with a small running clearance, and the size thereof is selected in such a way that it makes it possible to close at least partially each discharge opening (12, 12′), at least one of which is connected to an opening (15) also embodied in the body (4) and open at least partially to the opposite side of the pusher (3).
Pressure relief device usable in a high-pressure fluid circuit for limiting the pressure in the case of a failure of a circuit component, comprising a body and a pusher sliding therein and axially movable by return means in such a way that it drives sealing means of an orifice connecting an upstream chamber receiving a high-pressure fluid and a downstream chamber which is delimited by the body, the side of the pusher Sand the perforated wall of said orifice, said upstream chamber comprising at least one fluid discharge opening and the sealing means being held by the return means in the position closing the orifice below a predetermined pressure threshold in the upstream chamber, characterized in that the pusher is devoid of axial through channels for the fluid, slides in the body with a small running clearance, and the size thereof is selected in such a way that it makes it possible to close at least partially each discharge opening, at least one of which is connected to an opening also embodied in the body and open at least partially to the opposite side of the pusher.
Dependencies are inferred from the claim text.