Stairs rail connector
US5647681A · kind A · utility
Inventor
Key dates
| Filing date | Jun 18, 1996 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Jun 18, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/57
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A stairs rail connector which is pre-manufactured as a semicircular turning rail, including two curved tubes with identical dimension. Each curved tube has an interconnecting end and a connecting end. The interconnecting end of one curved tube is disposed with a shaft seat therein, while the interconnecting end of the other curved tube is disposed with a shaft ring therein, whereby the interconnecting ends are rotatably connected with each other, permitting the curved tubes to be freely 360 degrees rotated relative to each other. After the curved tubes are rotated to a position corresponding to the turning angle between an upper and a lower rails, the connecting ends of the curved tubes are inserted into and secured in the openings of the upper and lower rails to connect the same at the turning angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.