| 摘要 |
PURPOSE:To keep a device airtight, not allowing leakage of pressurized gas during it use both in an erected state and in an inverted state, without providing a gap between a channel-closing globe and a contact part of a lower packing of elastic material positioned thereunder. CONSTITUTION:An outer cylinder 4 having a liquid-feeding channel 5 on the lateral side and an inner cylinder 3 having a built-in fluid-ejection valve in the outer cylinder 4 are provided. When the assembly is in use in an erected state, a channel-closing globe 7 integrally contained in the inner cylinder 3 comes in tight contact with a lower packing 9 of elastic material, provided at an opening 15 for the globe 7 to rest on, so that the opening 15 is closed, allowing the fluid to be ejected through another channel. When the assembly is inverted, the channel-closing globe 7 separates from the opening 15, on which the globe 7 rests, to open a passage therethrough; a projecting rim 18 at the upper end of the inner cylinder 3 comes in tight contact with an upper packing 8 of elastic material placed above so that the gas when used in the erected state is prevented from leaking. Thus, whereas, when the assembly is in the erected state, the airtightness is kept by closure of the opening 15 with the channel-closing globe 7 thereon, the airtightness is kept by contact of the projecting rim 18 with the upper packing 8 when used in the erected state. |
