Manual pipette with delayed-action home position latch
US5792424A · kind A · utility
30Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1996 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Aug 15, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A manual pipette including a delayed action home position latch for engaging only after the plunger unit of the pipette has moved downward through its home position to thereafter releasably connect a moveable bottom stop member to the plunger unit to move therewith and upon an upward return of the plunger unit by the pipette's return spring to engage a home position stop to releasably lock the plunger unit in its home position without any downward force being exerted by the pipette user on the plunger unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.