Sprayer
US6155498A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1999 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Nov 1, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B9/0877
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A sprayer can convert the entire manual effort used to operate a manual pump into energy for spraying liquid. The sprayer has a liquid tank filled with a liquid, and an air tank having a pressurized air supply valve through which pressurized air can be introduced into the air tank. The air tank communicates with a float valve having a valve hole communicating with a spray nozzle and a hollow rod as the outlet of a manual pump. Pressurized air is introduced into the air tank through the pressurized air supply valve to increase the air pressure in the tank to a predetermined bias pressure. Then, the manual pump is operated to suck liquid in the liquid tank and supply the thus sucked liquid through the float valve into the air tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.