Pump chamber having at least one spacer for inhibiting the pumping of a gas
US6382923B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1999 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Jul 20, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B2205/503
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Pump chambers are disclosed that include at least one spacer element therein to prevent any gas in the pump chamber from being pumped from the pump chamber during pumping. In some embodiments, the pump chambers are included in removable pumping cartridges that are constructed and configured for coupling with reusable pump drives. Some embodiments of pump chambers including spacer elements therein comprise a substantially rigid component forming a wall of the pump chamber with a flexible or movable membrane disposed on the wall to form the chamber. Spacer elements in such pump chambers are, in some embodiments, attached to a wall of the substantially rigid component so as to prevent the movable/flexible membrane from contacting the wall during pumping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.