Container closure provided with air pump mechanism
US4848599A · kind A · utility
11Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1988 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Jan 22, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/061
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A closure to be applied to a container for holding a liquid such as shampoo. The closure comprises a closure body, a discharge liquid tube extending through the closure body and a reciprocating air pump mechanism built in the closure body. The air pump mechanism includes a cylinder whose discharge side communicates with the inside of the container and whose intake side communicates externally of the container, a piston, and a spring for elastically biasing the piston toward the intake side. The piston has a rod whose free end portion extends outwardly of the closure body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.