Self-locking preload controlling nut
US5692863A · kind A · utility
9Cited by
8References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 25, 1996 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Jan 25, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B31/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A self-locking internally threaded nut has a deltoid shaped locking section having circumferentially spaced protrusions. The protrusions form a surface adapted to be engaged by a deltoid driver which tightens the nut onto a bolt to a predetermined axial load. At the predetermined load the protrusions are plastically deformed inwardly on the nut so that the driver rotates freely on the nut. When the protrusions are inwardly deformed, the deformed material impinges on the bolt, thereby rotationally locking the nut on the bolt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.