| 摘要 |
PCT No. PCT/IT97/00071 Sec. 371 Date Dec. 19, 1997 Sec. 102(e) Date Dec. 19, 1997 PCT Filed Mar. 28, 1997 PCT Pub. No. WO97/40945 PCT Pub. Date Nov. 6, 1997A manual liquid dispenser (1) for a liquid dispensing bottle (3) is held fast to the threaded bottle neck (5) by a ring nut (4). The hollow pump body (6) includes inside the top end a folded-back lip (16) with an inverted V cross section. The V cross section has inclined outer (16a) and inner (16b) portions; the inner side of each is in circumference contact with one side of the bottle mouth rim (2). The folded-back lip (16) may have a flat bottom (16c) between the inner and outer portions. The outer portion preferably is inclined, making a conical surface that engages the internal lateral profile (4a) of the ring nut (4). The pump body (6) has a check valve (9) at the first end (7). An outflow push-button (11) is mounted on the end of a movable hollow stem (10) which protrudes through the second end (8) of the pump body. The stem drives a piston (12) within a pressure chamber (14).
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