Platform crane with counterweight and boom carrier support linkages
US4103783A · kind A · utility
15Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1977 |
| Grant date | Aug 1, 1978 |
| Priority date | — |
| Expiry date | Nov 25, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C23/74
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A crane assembly which, in heavy lifting configuration, has a platform with boom carrier and counterweight support rotatably mounted on a ring with the mounting including a king pin removably secured to the ring. The platform will easily accept a variety of hoisting machinery. Not only are the boom, mast and ring suitable for other crane configurations, but also the counterweight support and boom carrier are standard subcombinations held rigid with the platform through links defining triangular frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.