公开(公告)号：US4398186A

公开(公告)日：1983-08-09

申请号：US267709

申请日：1981-05-27

Applicant: Ralph M. Statz

Inventor： Ralph M. Statz

IPC: E03F7/00 ,  G01F23/70 ,  H01H35/18 ,  G08B21/00

CPC classification number: H01H35/18 ,  E03F7/00 ,  G01F23/70 ,  E03F2201/40

Abstract: A sewer back up warning system includes a pair of electrically-conductive probe rods fixedly securable within a sewer clean out pipe and being in electrical communication with a sewer back up alarm. An electrically-conductive float is hingedly attached to a free end of one of the rods, such float serving to rise in the clean out pipe as a sewer backs up so as to eventually come into contact with the second rod to thus complete the electrical circuit containing the back up alarm. A corrosion check device is also provided which essentially consists of a manually-operable chain pull for effectively bringing the metallic float into electrical communication with the second rod so as to determine the presence of corrosion build up which would prevent the operation of the alarm. The rods may either be retained in a non-metallic disk positionable within a sewer clean out pipe at the time a dwelling is constructed or alternatively, the rods may be inserted directly through the sewer clean out pipe cap in dwellings that have already been built.

Abstract translation: 下水道备用警报系统包括一对固定在下水道内的导电探针杆清洁管道，并与下水道备用报警器电气连通。 导电浮子铰接地连接到一个杆的自由端，这样的浮子用于在下水道备用时上升到清洁管中，以便最终与第二杆接触，从而完成电路 包含备份报警。 还提供了一种腐蚀检查装置，其基本上由可手动操作的链拉力组成，用于有效地使金属浮子与第二杆电连通，以便确定是否存在防止报警操作的腐蚀积聚。 在建造住宅时，杆可以被保持在可以在下水道内定位的非金属盘清洁管中，或者可替代地，杆可以直接插入下水道，在已经建成的住宅中清除管帽。