Dual liquid spraying system
US5439141A · kind A · utility
101Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1994 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Jul 21, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1067
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A manifold for use with a hand held pump spray device allowing the spray head to draw simultaneously from two separate reservoirs containing two different fluids such that the spray heads raise a mixture of the two fluids in a predetermined ratio. The manifold includes at least one ball check valve arrangement in the suction line to the chemical concentrate reservoir, the ball check valve being normally biased to a closed position. The check valve presents the pumping of the concentrate when the diluent reservoir is spent and further prevents cross contamination between the fluids in the two reservoirs due to syphoning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.