发明名称 MECHANICAL COUNTER
摘要 A mechanical counting device for actuating a plurality of output devices, the device comprising: linear indexing means adapted to count a plurality of actuating signals and to cause actuation of the output devices when a predetermined number of actuating signals for each output device has been received, wherein the mechanical counting device is adapted to cause actuation of a particular device when a different predetermined number of actuating signals has been received such that the output devices are sequentially actuable.
申请公布号 EP2553210(A2) 申请公布日期 2013.02.06
申请号 EP20110710835 申请日期 2011.03.10
申请人 PETROWELL LIMITED 发明人 SMITH, COLIN;PURKIS, DANIEL GEORGE
分类号 E21B23/00;E21B21/10;E21B23/04;E21B34/14 主分类号 E21B23/00
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