Fastener assembly for preventing corotation during tightening
US6343904B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2000 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | Nov 15, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B39/24
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bolt assembly includes a bolt member, a washer, and a nut. The bolt member includes a head and a shank. The shank has a connecting section that is connected to an article confronting side of the head, an externally threaded section that extends from the connecting section, a breakable tip that extends from the externally threaded section and that is formed with a plurality of axially extending and angularly displaced teeth, and an annular groove that is formed at a juncture of the externally threaded section and the breakable tip. The washer is sleeved on the shank of the bolt member, and has an article confronting side formed with a plurality of spaced apart and radially extending anti-skid projections, and a nut confronting side opposite to the article confronting side of the washer. The nut engages threadedly the externally threaded section of the shank, and has opposing first and second surfaces respectively disposed remote from and proximate to the nut confronting side of the washer such that the second surface of the nut urges the nut confronting side of the washer toward the head of the bolt member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.