公开(公告)号：US4973950A

公开(公告)日：1990-11-27

申请号：US455551

申请日：1989-12-04

Applicant: Robert Tourtillott

Inventor： Robert Tourtillott

IPC: E03F7/00

CPC classification number: E03F7/00 ,  E03F2201/40

Abstract: A sewer blockage alarm for a sewer line having a pressure sensor mounted at the top of a clean out branch section of the sewer line which is connected to a large diameter pressure multiplying pressure bell via a length of flexible to be dangled at the entrance of the branch section. An audible and a visual indicator are activated by slight pressure rises caused by water level rising to the tip of sewer line to provide an early warning of an incipient blockage condition.

Abstract translation: 一种用于下水道的下水道堵塞警报器，其具有安装在下水道线的清洁分支部分的顶部的压力传感器，该压力传感器通过一段柔性长度连接到大直径压力倍增压力钟，以便在 分支部分。 一个听觉和一个视觉指示器被水位上升引起的轻微的压力上升到下水道末端，以提供初期的堵塞状况的早期预警。