Spray dispensing container
US4214677A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1978 |
| Grant date | Jul 29, 1980 |
| Priority date | — |
| Expiry date | Jul 12, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1087
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dispenser having a reciprocating pump to feed a liquid product to a mixing chamber and an air pump with a piston to simultaneously compress and feed compressed air to the mixing chamber. The body containing the mixing chamber is mounted on the product pump and the air piston is mounted on the body. Manual pressure on the air piston is transmitted to the body which moves down to cause the product pump to reciprocate. The product pump includes a chamber with a valve which opens only after the pressure in the chamber exceeds a certain value. The air pump includes a valve which opens only after the air pressure exceeds a certain value. The air pressure valve is selected to open at the same time as the pump valve opens so that the product is dispensed as a spray.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.