Articulating poppet to seal a natural vacuum leak detection device
US9206772B2 · kind B2 · utility
0Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2012 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Feb 22, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7779
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A Natural Vacuum Leak Detection (NVLD) device having an articulated poppet to allow the sealing surface of the poppet portion to articulate, or wobble, on the end of a poppet pin, where the poppet pin is mounted to the end of the flange portion. The flange portion has the friction spring, and poppet spring pushing on it. The seal surface of the flange portion is able to move to evenly apply force to the lip seal, and provide a full seal. Because the seal surface of the flange portion is able to articulate, or wobble, the flange portion is able to compensate for misalignment between the poppet stem portion and lip seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.