Means for storing and connecting jib for telescopic boom of mobile crane
US3945333A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1974 |
| Grant date | Mar 23, 1976 |
| Priority date | — |
| Expiry date | Dec 20, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C23/702
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A mobile crane has a multisection telescopic boom and an optionally useable lattice jib storable alongside the boom with the base end of the jib adjacent the point end of the boom. One side of the boom base section is provided with a pair of longitudinally spaced apart jib storage support assemblies to facilitate storing and installing the jib. The point end of the boom fly section and the base end of the jib are provided with cooperating disconnectable hinge members for attaching the jib to the boom so that the jib can be swung horizontally between stored and installed positions. The point end of the boom fly section and the base end of the jib are provided with connection means, including a cylindrical rod on the boom fly section and cooperating journal bearings on the jib, for securing the jib to the boom in either axial aligned position or in downwardly tilted position, and adjustable strut means is detachably connected between the boom and the jib to limit the extent to which the jib can tilt downwardly. The jib is provided with a self-storing and self-erecting jib mast which is pivotally mounted on the upper side of the jib and cooperates with guy lines to support the jib dur…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.