Pumping dispenser for viscous liquids
US7740151B2 · kind B2 · utility
3Cited by
6References
5Claims
0Family size
Inventor
Key dates
| Filing date | Jun 19, 2007 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Jun 26, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/314
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A hand operated air pump apparatus comprising an internal bellows in communication with an outer bellows wherein variable force on air pump forces compressed air through a discharge valve into a annulus between a bottle and a flexible bladder wherein said pump is attached upon a container or bottle like vessel wherein pumping action forces from bottle highly viscous substances, that may contain solid or abrasive particles, through a discharge spout without internal substance being contaminated by air or other environmental factors thus allowing for an improved method of removing all contents within a container with greater ease.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.