| 摘要 |
<p>1,006,278. Seals; piston packing; valves. HOERBIGER VENTILWERKE A.G. Sept. 13, 1963 [Sept. 25, 1962], No. 36230/63. Headings F2B, F2T and F2V. A device for sealing a spool valve comprises an elastic sealing ring 18 which is of T crosssection (Fig. 1) or solid-triangular crosssection (Fig. 3) and fixed in position by supporting elements 19 mounted axially one each side of the ring. As shown, the supporting elements 19, which are of tubular form and provided with openings communicable as set by the spool valves with the valve ports 3, 4, 5, 6 in the valve casing, are arranged inside the valve casing and disposed alternately with sealing rings 18 which are adapted to engage with their free edges the valve spool. The whole assembly of elements and sealing rings is secured in position between end glands 11, 12; if desired, the sealing rings in the glands themselves may be of 0-type. In an alternative form, the T-shaped sealing rings are mounted on the piston with the legs directed outwardly.</p> |
