Self-driven pump device
US5135500A · kind A · utility
80Cited by
18References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1989 |
| Grant date | Aug 4, 1992 |
| Priority date | — |
| Expiry date | Oct 31, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/14513
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for delivering fluid with a relatively constant, controlled rate of flow comprises a vacuum power means, a fluid storage means in axial alignment with the vacuum power means and a plunger means carried by the vacuum power means and in axial communication with the fluid storage means. The plunger means is driven by a vacuum which collapses under atmospheric pressure, and as it is driven it effects delivery of the fluid from the fluid storage means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.