Security fastener
US10221946B1 · kind B1 · utility
8Cited by
30References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2017 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Sep 6, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05G2505/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fastener having a head is provided. The fastener includes a unidirectional inner drive including an inner lobe having an inner ramp surface adjacent to an inner drive abutment surface adapted to receive a torque to effect a clockwise rotation of the fastener. The fastener further includes a concentric unidirectional outer drive including an outer lobe having an outer ramp surface adjacent to an outer drive abutment surface adapted to receive an inverse torque to effect a counter-clockwise rotation of the fastener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.