Remotely monitored tamper bar for a backflow preventer
US5520207A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1994 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | May 31, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8359
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A remotely monitored tamper bar apparatus for monitoring two shut-off valve handles of a water supply backflow preventer includes an elongate U-shaped member having a base and two side legs. The base and two side legs form a channel for receiving the handles and to prevent movement of the handles. A switch is operatively associated with the U-shaped member. The switch has a first position which maintains the handles within the channel and a second position which allows the U-shaped member to be removed from the handles such that movement of the handles is permitted. The switch provides a signal for remotely monitoring whether the switch is in the first position or the second position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.