Hand-held dispenser/aspirator
US6524531B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 1999 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Sep 14, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hand-held, single-channel dispenser/aspirator is disclosed. The present dispenser/aspirator comprises a body portion for gripping the dispenser and a head portion. In some embodiments, the head portion includes a valve, a liquid conduit and a removable liquid reservoir. The liquid conduit places the liquid reservoir and the dispensing valve in fluid communication. A gas conduit received by the body portion of the dispenser is operable to pressurize the fluid reservoir, or draw a partial vacuum therein. Controls located on the body portion operate the dispenser. The liquid reservoir is advantageously disposed near the valve, so that a relatively short length of liquid conduit is required to operatively connect the reservoir and the dispensing valve, thereby improving the accuracy of the dispensing operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.