Controllable liquid dispenser
US4210261A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1978 |
| Grant date | Jul 1, 1980 |
| Priority date | — |
| Expiry date | Jun 12, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1015
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved liquid dispenser has two concentrically spaced cylinders with a pump plunger fitting the inner cylinder, an inlet check valve at the bottom of the outer cylinder, and an outlet check valve adjacent the top of the outer cylinder with a graduated stem extending upwardly from the plunger through a cap structure adapted to engage the open top of a liquid container. The pump plunger is restrained from moving upwardly out of the inner cylinder and a collar is adjustably mounted on the stem above the cap for setting the pump stroke as indicated by the graduations on the stem to thus provide a dispenser adapted to fit containers having a small opening therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.