Universal check valve assembly
US4313456A · kind A · utility
2Cited by
5References
9Claims
0Family size
Inventor
Key dates
| Filing date | Dec 24, 1980 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | Dec 24, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/784
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A universal check valve assembly is disclosed which fits within an exhaust conduit having any one of a range of diameters and without any modification to the structure of the conduit. The assembly includes an adjustable diameter support hoop and a circular, single piece valve structure of variable diameter which can removably engage the support hoop. The support hoop has a downwardly extending, outwardly flaring skirt portion which resiliently engages the inner wall of an exhaust conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.