Toilet bowl flushing device
US4989277A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Mar 2, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S4/03
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A toilet bowl flushing device washes out a toilet bowl while controlling the flow rate of flushing water supplied to the toilet bowl for a maximum flushing effect. The toilet bowl flushing device includes water supply apparatus for supplying flushing water to the toilet bowl, the water supply apparatus including a flow rate control valve for controlling a rate of flow of flushing water to be supplied to the toilet bowl, an actuator for actuating the flow rate control valve, and a control subsystem operable according to a predetermined flow rate pattern program for controlling operation of the actuator to vary the rate of flow of flushing water in one flushing cycle with respect to time from a time to start flushing the toilet bowl to a time to finish flushing the toilet bowl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.