| 摘要 |
<p>1,250,173. Valves; coil springs. HONEYWELL Inc. 25 Sept., 1968 [4 Oct., 1967], No. 45596/68. Headings F2S and F2V. A fluid-pressure operated valve comprises a housing 11, 21 defining a cavity 17, an inlet 12, an outlet 22, a valve seat 16b, a movable wall 16 dividing the cavity, a closure member 20 movable with the wall 16, and a generally coneshaped coil spring 25 whose larger end is fixed in the housing and whose smaller end, under the stress transmitted through a link 27, is passed through the larger end into a position in which the spring is turned substantially inside out relative to its normal disposition. The spring has more than four coils and the last two coils at each end of the spring are substantially of the same diameter so that their normal relative positions are not reversed when the smaller end of the spring is passed through the larger end. A bore 18 connects the inlet side of the wall 16 with the atmosphere, whereby the closure member automatically throttles the fluid flowing through the valve and so regulates the pressure. The closure member, itself, is formed with apertures 20b and is secured to a thickened part 16d of the movable wall. The valve seat 16b is integral with the movable wall. Reference has been directed by the Comptroller to Specification 1,144,802.</p> |
