Fluid handling apparatus having a fluid metering volume therein
US4428511A · kind A · utility
10Cited by
16References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1981 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | Aug 27, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86501
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid handling device of the rotary slot type is characterized by a fluid metering volume disposed in the stator of the device in close proximity to a fluid transfer passage formed in the stator. The metering volume receives a piston movable in a suction and a pumping stroke to draw fluid into the metering volume and to pump fluid therefrom. A rotary seal having the slot formed therein is received by seal rotating actuator such that a portion of a tab formed on the seal is accessible to permit removal of the seal from the rotating actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.