A cosmetics case having a dual sealing structure is designed to retain the volatile solvents in the cosmetic and hence ensure a longer life for the cosmetics. Both the foldable mirror and the lid, containing the make-up tools are sealed.
โฆ LIBER โฆ
Cylindrical spring with integral dynamic gas seal
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 366 KB
- Volume
- 2004
- Category
- Article
- ISSN
- 1350-4789
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โฆ Synopsis
The purpose of this invention is to provide an improve threaded pipe joint for the oil and gas industry. This is achieved by the contact between pin and coupling on the bottom diameter of the pin thread and the peak diameter of the coupling thread. The thread has an asymmetric trapezoidal shape. The threaded joint is claimed to withstand 100% of the axial load rating of the pipe, and the thread form is claimed to be particularly resistant to corrosion.
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Gas diffusion layer with integrated seal
๐
Article
๐
2008
๐
Elsevier Science
๐
English
โ 250 KB