Spray pump
US4344744A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1980 |
| Grant date | Aug 17, 1982 |
| Priority date | — |
| Expiry date | Jan 16, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1063
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A spray pump comprises a pump cylinder defining a pump chamber, a piston which is movable in the chamber, an actuating push button arranged to move the piston in the chamber, and an atomization nozzle arranged to receive liquid from the said chamber. A liquid outlet valve is located between the pump chamber and the atomization nozzle. The outlet valve comprises a valve body received in and surrounded by a tubular portion, the valve having a closed position in which tubular portion lies against the valve body and an open position in which the tubular portion is elastically widened to allow liquid to pass between the valve body and the tubular portion. The valve further comprising a stop for holding the valve body in the tubular portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.