Rack and pinion drive for by-pass cartridge
US8123084B2 · kind B2 · utility
3Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2009 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Jun 10, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3152
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device for mixing a substance comprised of two constituents contained in a cartridge (12) and having a cartridge holder (32) thereabout, the device comprising a plunger rod (46) for pushing a closure member (20) to permit the transfer of a diluent in a second chamber (28) through a by-pass channel (24) to mix with a constituent in a first chamber (26), the plunger rod (48) being driven by means of a rack (48) and a pinion gear (50) arrangement to prevent overly rapid movement of the plunger rod (46).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.