发明名称 VERSCHLUSS STUECK FUER EIN SICHERHEITSVENTIL
摘要 <p>1,164,678. Valves. TOA VALVE CO. Ltd. 12 Dec., 1967 [27 Dec., 1966], No. 56411/67. Heading F2V. In a pop safety valve, the valve closure member 3, which is assembled in a holder 4 and movable with it within a cylindrical guide 5, has its undersurface, which is engageable with a seat 1, formed with an annular protrusion 8, the free end of which is inclined, and an annular flange 9 which is bent inwardly into tight abutting engagement with the protrusion 8, an annular chamber 15 being so defined between the flange 9 and the protrusion 8, and the undersurface 11 of the flange 9 being formed flat for engagement with a corresponding surface 2 of the seat 1. The closure member is biased on to the seat by a spring 6, but upon the fluid pressure within the seat 1 reaching a certain value, such pressure through acting on the closure surface 10 and within chamber 15 causes the valve to reach a state, prior to it popping open, in which only line contact is maintained between the flange 9 and seat surface 2 and the protrusion 8 is spaced from the flange 9 (Fig. 3, not shown), the arrangement serving to minimize or prevent leakage prior to popping of the valve. The flange 9 is formed from an annular peripheral wall (18, Fig. 4, not shown) depending from, and integral with, the closure member, which wall has metal fibres extending in the vertical direction and is bent inwardly into contact with the protrusion 8 in hot forming.</p>
申请公布号 DE1650577(B1) 申请公布日期 1971.04.08
申请号 DE19671650577 申请日期 1967.12.22
申请人 TOA VALVE 发明人 HAGIHARA NOBORU
分类号 F16K17/04;(IPC1-7):16K17/04 主分类号 F16K17/04
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