Automatic fluid circulating system and method
US5413142A · kind A · utility
54Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1994 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Mar 30, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7891
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A check value for controlling fluid flow comprises two sleeves connected to one another in fluid-tight engagement and a flexible membrane disposed across an interior cross-section of the engaged sleeves. The flexible membrane is secured to the sleeves along less than the membrane's full circumference, so that the unsecured portion of the membrane can flex to allow fluid to flow through the sleeves in one direction. The membrane resists fluid flow in the opposite direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.