Knurled fastener with cutting edges and removable head
US6872042B2 · kind B2 · utility
10Cited by
15References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 2003 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | May 8, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S411/923
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A novel fastener comprises a head having a recess for receiving a rotary driver, a shank having knurls defined by generally helical grooves and intersecting generally annular grooves, wherein a plurality of the knurls include a lateral cutting edge, and a generally pointed tip. Another novel fastener comprises a head having a recess for receiving a rotary driver, a shank having a predetermined diameter small enough so that the head will break away from said shank upon application of a predetermined torque, and said shank having knurls defined by generally helical grooves and intersecting generally annular grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.