Twirling dip tube
US6729500B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 2003 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | May 27, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/0089
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid pump dispenser includes a spring biased pump piston having a generally hollow stem and reciprocable between pressure and return strokes within a pump cylinder therewith defining a variable volume pump chamber for dispensing fluid through a discharge opening at an outer end of the stem. The stem defines a valve controlled discharge passage leading from the pump chamber to the discharge opening. A driver nut may be mounted adjacent the pump piston and include at least one flange engaged with at least one respective spiral turn on a spindle disposed within the pump chamber to thereby rotate the spindle during reciprocation of the pump piston. A dip tube may be disposable within a container and affixed to the spindle for rotation with the spindle. A figurine may be mounted onto the dip tube for complementary rotation with the dip tube and the spindle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.