| 摘要 |
PCT No. PCT/IB95/00299 Sec. 371 Date Nov. 4, 1996 Sec. 102(e) Date Nov. 4, 1996 PCT Filed Apr. 26, 1995 PCT Pub. No. WO95/30837 PCT Pub. Date Nov. 16, 1995Two secateur jaws are jointed together by means of a pin with radial lugs engaging a ring attached to one jaw and extending through a sleeve slidably arranged in the two jaws. Said sleeve encloses a helical return spring between the sleeve and the head of the pin. The head of the sleeve has an external screw thread with a ring screwed thereon for adjusting the tension of the spring. The sleeve may be moved axially by screwing said ring on or off to change the tension of the spring and thus the force exerted by the latter on said jaws, whereby the engagement pressure therebetween also changes.
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