Tamper-proof locking fastener
US9188149B2 · kind B2 · utility
12Cited by
38References
19Claims
0Family size
Inventor
Key dates
| Filing date | Feb 7, 2014 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Feb 7, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B39/105
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Locking fastener consisting of a threaded fastener having a head of noncircular contour, a lock plate having an opening in which the head of the fastener is received and constrained from rotating, and a retaining screw threadedly attached to the head of the fastener to retain the lock plate in position on the head. In the disclosed embodiments, the retaining screw is a tamper-proof security screw that requires a special tool or key for installation and removal. The fastener is particularly suitable for use in securing covers to utility boxes, and an adapter is included for use on existing boxes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.