Jar mounted pipettor
US4273257A · kind A · utility
51Cited by
18References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1977 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Jul 18, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1007
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pipettor for threaded attachment to a liquid containing jar provides for dispensing a controllable volume of liquid with a high degree of precision upon manually operating a plunger. The liquid volume dispensed in a single plunger operation is adjusted by rotation of the plunger knob. Both a linear coarse scale and a circular fine adjustment scale are provided for accurately setting the volume to be dispensed. Positive detent stops are provided for accurate volume settings. Improved air purging and plunger locking mechanisms are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.