Integrated fastening system
US6792838B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Aug 5, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B23/0092
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fastener system comprises a plurality of ranges of size of threaded fastener, each fastener having a head provided with a recess to receive a tool to rotatingly drive the fastener. In each range of sizes, the largest size of fastener has a recess comprising a plurality of driving recess tiers of reducing size superimposed on one another. The range of fasteners to be driven by the tool includes a first fastener whose recess is shaped to be drivingly engaged by at least the third and second smallest tiers of the tool, but not the smallest tier. The recess receiving the second smallest tier of the tool is deep enough to freely accommodate the smallest tier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.