Alarm kit for a chemical tank of a noncommercial water purification system
US4968976A · kind A · utility
Inventor
Key dates
| Filing date | Jun 2, 1988 |
| Grant date | Nov 6, 1990 |
| Priority date | — |
| Expiry date | Jun 2, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B21/182
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An alarm kit for notifying a user of a noncommercial water purification system that the level of liquid with the chemical tank of the system is below a predetermined level includes a float, a housing, an alarm, an activation device and a connection member. This alarm kit can be easily installed by a homeowner or other user of the system and will allow the user to avoid complete depletion of the liquid from the chemical tank. The float either floats on top of the liquid or is submerged therein and will cause movement of the connection member when the liquid level drops below the predetermined level. The connection member will then pivot an arm of the activation device to cause the alarm to be activated in order for the user to be alerted that the liquid within the tank needs to be replaced. The predetermined level is determined by the usual rate of withdrawal of liquid from the tank and the usual time required to replenish the fluid, such as the response interval of a vendor to a request for service.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.