| 摘要 |
<p>A valve mechanism including a movable system carrying two valve members closing selectively two channels through engagement with their seats, at least one valve member being carried floatingly by a spring with the interposition of a rigid member fitted over the outer peripheral deformable edge of an intermediate yielding washer or the like member engaging through its inner peripheral edge the valve member considered. Similarly the seat of another valve member may be carried floatingly by a spring and form a rigid annular member fitted over the inner deformable edge of an intermediate yielding washer or the like member engaging through its outer peripheral edge the inner surface of the body of the valve mechanism. In all cases, the two valve members are held both in their closed condition for an intermediate position between the open positions of either valve member. Thus, an annular yielding member fitted coaxially in a rigid member subjected to the action of a spring engages fluidtightly through said yielding member a valve member or a seat for the latter according to the case, whereby said spring urges the rigid member into engagement with the cooperating seat or cooperating valve member respectively.</p> |
