Pump sprayer with stationary discharge
US5425477A · kind A · utility
8Cited by
13References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1994 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Jun 29, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/0062
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A precompression pump sprayer has a stationary discharge and a reciprocable pump cylinder which squeezes the air out of the pump chamber to facilitate priming as the cylinder is plunged relative to a piston shifted by the plunger to open the discharge during priming. Once primed the piston is shifted to open the discharge upon a build up of pressure during plunger reciprocation. A container vent is controlled by operation of the plunger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.