Screwed safety assembly
US4448561A · kind A · utility
4Cited by
10References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1980 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Aug 29, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A screwed safety assembly capable of being assembled and disassembled at a distance and under immersion, in which the screw head comprises a deformable cylindrical ferrule (15) and in which the seating (4) of the screw head comprises widened portions (6) into which the ferrule partially penetrates when it is deformed by expansion. The seating (4) of the screw head further comprises, at the level of the upper edge of the ferrule (15), a circular groove (10) between the widened portions (6) and leading into these.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.