Anti-cross threading screw
US8197170B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2009 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Aug 28, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21K1/46
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An anti-cross threading screw (1) includes a first threaded portion (4) including a first thread (5) having a first outer diameter (6) and a first pitch (9) and a second threaded portion (12) having a second thread (13) having second outer diameter (18) and a second pitch (21). The second threaded portion (12) is designed as an anti-cross threading portion. The second thread (13) has enlarged an thread crest (15). The second outer diameter (18) of the second thread (13) is smaller than the first diameter (6) of the first thread (5). The first pitch (9) of the first thread (5) is different than the second pitch (21) of the second thread (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.