| 摘要 |
PCT No. PCT/GB93/02475 Sec. 371 Date Jul. 27, 1994 Sec. 102(e) Date Jul. 27, 1994 PCT Filed Jul. 27, 1994 PCT Pub. No. WO94/13409 PCT Pub. Date Jun. 23, 1994.A self-unblocking spray nozzle 10,11 in which an easily removable insert 12 is automatically moved by fluid pressure to form a spray orifice 26, and expands resiliently when the fluid pressure is interrupted. The insert 12 may include swirl vanes 33 to rotate the fluid, and may operate with a static member 14 to form an automatic anti-drip valve.
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