公开(公告)号：US5844148A

公开(公告)日：1998-12-01

申请号：US902992

申请日：1997-07-30

申请人： Jeffrey M. Klein ,  Martin L. Krause

发明人： Jeffrey M. Klein ,  Martin L. Krause

IPC分类号： G01N1/22 ,  G01N1/20

CPC分类号： G01N1/2226 ,  G01N1/2202 ,  G01N2001/2223

摘要： An adjustable sampling tube construction for a duct-mounted smoke detector includes telescopic tube sections which can be fixed in overall length by a screw extending through an outer tube to fix an inner tube with respect to the outer tube. The inner tube includes air sampling holes spaced apart along its length and the outer tube includes a plurality of spaced apart through holes having a same spacing to register with the sampling holes of the inner tube. The inner tube is telescopically positionable within the outer tube to register the sampling holes with the through holes to provide air sampling locations throughout a length of the combined inner and outer tube assembly.

摘要翻译： 用于管道安装的烟雾探测器的可调节采样管结构包括伸缩管部分，其可以通过穿过外管的螺钉固定在总长度上，以相对于外管固定内管。 内管包括沿其长度间隔开的空气采样孔，外管包括多个间隔开的通孔，其间隔相同，以与内管的采样孔对准。 内管可伸缩地定位在外管内，以将采样孔与通孔对准，以在组合的内管组件和外管组件的整个长度内提供空气取样位置。