Watering device
US7752807B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 17, 2007 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Apr 25, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G27/006
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved watering device comprises a cap member including a fastening portion provided at the upper side thereof for screwing with a container, and including a hollow tapered insertion element couplingly disposed at the lower side thereof and communicating with the fastening portion for forming a water passageway therein, and the cap member containing an air flowing duct extending in the air venting end of the cap member and having an air admitting end formed at the outer portion thereof for screwing with a rotating knob, wherein the air admitting end of the air flowing duct includes a tapered outer thread portion attached thereon so that as screwing with the rotating knob, an air admitting sacs between the inner and outer thread portions may be formed, thereby the outside air may flow into the air flowing duct, any by using the control member, the outflow amount of fluid may be stably regulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.