Backpack sprayer
US5636791A · kind A · utility
46Cited by
19References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Jul 7, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B9/0877
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is for a backpack sprayer which has a reservoir tank fixedly attached to a support frame, the tank having a fill opening located at the top end and a pressure vessel located therein. The pressure vessel has a pump housing located therein which has a one way check valve leading into the pressure vessel, the pump housing also having a cylinder actuated by a hand crank for compressing the sprayed liquid into the pressure vessel. The pressure vessel expels the compressed liquid through a hand held wand operated by the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.