Drain valve
US10612224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2016 |
| Grant date | Apr 7, 2020 |
| Priority date | — |
| Expiry date | Oct 13, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03D1/35
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drain valve includes a valve body provided with a drain outlet in the lower portion, a first valve element arranged in the valve body to open or close the drain outlet, dividing the valve body into an inner cavity and an outer cavity and provided with a water outlet communicated with the drain outlet, a second valve element located in the inner cavity to open or close the water outlet of the first valve element, and a lifting component having an end connected with the second valve element and provided with a floating body assisting the lifting component in lifting the second valve element with a buoyancy force. Compared with traditional drain valves, the drain valve realizes the same draining effect with a short lift stroke, is convenient and fast to use, and improves the comfort level for users.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.