Automatic fluid flow shut-off device
US6209576A · kind A · utility
Inventor
Key dates
| Filing date | Aug 5, 1999 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Aug 5, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86389
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An automatic fluid shut-off device for interrupting fluid flow through a fluid supply path in a fluid delivery system. The automatic fluid shut-off device includes: a fluid flow sensor structured and disposed for monitoring fluid flow in a fluid supply path; a control panel housing, a central processing unit, and including a visual display panel, programming buttons, and indicator lights; and either a solenoid actuated fluid shut-off valve or relay that interrupts power to a fluid pump. The fluid flow sensor monitors fluid flow in the fluid supply path and outputs the fluid flow data to the central processing unit. The central processing unit compares the measured fluid flow value with the value preprogrammed for the particular operating conditions or for the particular active zone in a multi-zone fluid delivery system. The central processing unit actuates the solenoid to close the shut-off valve and/or trigger the relay to an open position to thereby stop fluid flow through the system when the measured fluid flow value exceeds the applicable preprogrammed maximum value. An audible alarm tone and flashing light are also triggered when the measured fluid flow value exceeds the maxim…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.