Method of and apparatus for remotely controlling orifice-opening and orifice-closing operations
US4340077A · kind A · utility
3Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1980 |
| Grant date | Jul 20, 1982 |
| Priority date | — |
| Expiry date | Oct 17, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87113
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A nozzle, e.g. for an air sampler, is opened by remote control by the firing of a squib which breaks loose a silicone-sealing body which is normally pressed by spring force against the nozzle orifice. When the body breaks away, a closing frame swings into position and upon the remotely controlled firing of another squib allows a spring biased closing member to engage with its silicone seal the orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.