High strength fastener and method
US5090852A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1991 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Jul 30, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B19/05
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fastening system including a two piece swage top fastener including a pin and a collar in which the pin has shallow lock grooves having a ratio of (h/Du).times.10.sup.2 of four (4) or less and in which the lock grooves have a simulated streamlined root contour generally defined by a portion of an ellipse, with the collar having a wall thickness defining a volume of material sufficient to provide overpacking of the shallow grooves of around 16% and to provide a clamp load of between around 85% to around 95% of the yield point of the pin, and with the pin and collar materials having ultimate shear strengths in a ratio of around 1.8:1 to 2.4:1 and with the width of the shallow pin grooves and intervening shoulders being generally in accordance with the shear strength ratio between the pin and collar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.