发明名称 Obstacle on a bowling lane
摘要 The invention relates to an obstacle on a bowling lane for keeping the bowling hall on a single bowling lane. The obstacle comprises at least one obstacle element which is arranged to be movable and is located next to the edge of a single bowling lane, in the longitudinal direction of the same, means for moving the obstacle element and means for guiding the movement of the obstacle element. The means for moving the obstacle element comprise a channel (5) underneath the obstacle element that can expanded with a gaseous or liquid substance.
申请公布号 US2004048678(A1) 申请公布日期 2004.03.11
申请号 US20030416810 申请日期 2003.10.22
申请人 KUOPPA PENTTI;SIEVANEN MIKKO 发明人 KUOPPA PENTTI;SIEVANEN MIKKO
分类号 A63D5/00;(IPC1-7):A63D5/00 主分类号 A63D5/00
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