Foldable boom assembly
US4200255A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1978 |
| Grant date | Apr 29, 1980 |
| Priority date | — |
| Expiry date | Aug 17, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32942
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A vehicle and foldable boom assembly includes an inner boom that extends outwardly from a side of the vehicle and an outer boom that extends outwardly from the inner boom to a working position. A hinge, having a pivot axis that is disposed generally vertically, interconnects the inner and outer booms and allows the outer boom to swing rearwardly to avoid structural damage upon impact with a foreign object; and the pivot axis is inclined in a direction that resiliently urges the outer boom forwardly to the working position so that the outer boom is automatically reset to the working position subsequent to impact with a foreign object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.