Safety cut-out
AssigneePipelife Rohrsysteme Gesellschaft m.b.H.
InventorPeter Masloff
Life of this patent
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Abstract
In a safety closing device for gas pipe systems (1) with a valve (2) which is capable of being pressed against a valve seating (9) in a housing, especially a tubular housing, the valve (2), as a disc valve capable of being moved in the axial direction of the tubular housing (1), is movably supported against the force of a spring (5). The cross-section area of the valve head (7) is made smaller than the clear cross section of the housing (1) and is kept at a distance from the inner wall of the tubular housing, and, furthermore, the gas supply connection (20) is provided on the side of the valve head (7) facing away from the spring (5).
Claims9
A safety closing device for a gas pipe comprising:
- a disc valve including a stem and a valve head having a seating surface which is capable of being pressed against a fixed valve seat provided in a tubular housing having a longitudinal axis, wherein the disc valve is movable in an axial direction of the tubular housing and is movably supported against a force exerted by a spring, and further wherein the cross-section of the valve head is smaller than a corresponding cross-section of the tubular housing and is held at a distance from an internal wall of the tubular housing;
- gas supply connection means provided on a side of said valve head facing away from said spring for connection to a gas supply pipe;
- wherein a cross-sectional area of a region of said tubular housing following the valve seat in the direction opposite to the gas supply connection increases continuously along a conical surface, such that generatrices of said conical surface enclose, with said longitudinal axis, an angle of from 3.degree. to 10.degree..
Dependencies are inferred from the claim text.