Pinned connection system for crane column segments
US8739988B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2011 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Feb 17, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/553
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A crane includes first and second column segments. At least a first, third and fifth connector are located on the first segment, respectively mating with at least a second, fourth and sixth connector on the second segment. Each of the connectors includes at least a first extension having a through-hole positioned in the extension such that the through-holes of mating connectors are aligned when the column segments are aligned. A first pin fits tightly through the through-hole of the first extension on the first connector and the through-hole of the first extension on the second connector to hold the first and second connectors together. A second pin fits loosely through the through-hole of the first extension on the third connector and the through-hole of the first extension on the fourth connector to hold the second and fourth connectors together. The connectors also include a compressive load bearing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.