Joint structure for pillars and its joining method
US5577857A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 7, 1994 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | Apr 7, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7058
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
End plates are forcibly fixed on the longitudinal end surfaces of pillars such as foundation piles buried in the ground. The upper and lower end plates are butted, and are vertically held by a circumferential recessed groove on the inner surface of an inside ring which is divided in a plurality of parts in the circumferential direction. The inside ring is provided with a conical taper around the outside diameter surface. The conical taper is fastened by an outside ring externally fitted around the outside diameter surface of the inside ring, to join the pillars to each other. This joint structure is simple, and makes it possible to certainly join the pillars at the job site, without any welding. Moreover, there can be provided a tough joint structure against bending.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.