Telescoping jib of a mobile crane
US11858788B2 · kind B2 · utility
0Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 10, 2021 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Nov 10, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C23/708
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A telescoping jib of a mobile crane having a basic box and a plurality of inner boxes that can each be extended from a retraction position to an extension position and that can be locked and unlocked together in the respective retraction position or extension positions by means of bolting holes, which are arranged in the basic and inner boxes, and associated locking bolts. In order to provide a telescoping jib of a mobile crane which can be easily unlocked in an emergency, it is proposed that, in the retraction position of the basic and inner boxes, the bolting holes for the extension positions are aligned with one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.