作者: Karl Burth , Dieter Luz , Martin Heinz
DOI:
关键词: Fastener 、 Reciprocating motion 、 Mechanical engineering 、 Engineering 、 Engineering drawing
摘要: The invention relates to an item of jewelry, comprising a fastener (2), outer part (3), and inner (4) rotatable therein. can move in reciprocating manner relative the part, entrainment means (5) is provided between order rotate one direction when certain movements are made.