Bi-petal l check-valve construction
US4867199A · kind A · utility
23Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1988 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Dec 14, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/785
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A stiffly compliant upstop extends parallel to the hinge axis of a bi-petal check valve and provides essentially a continuous line of contact with the downstream side of each valve member. This line of contact is symmetrically located to span virtually the entire distance between the spaced hinge-suspension points unique to each valve member. And continuity of the respective lines of upstop contact is maintained throughout a terminal range of angular displacement, as the upstop compliantly deforms in approach to the full-open condition of the respective valve members.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.