Lifting dolly for helicopters
US4488612A · kind A · utility
Inventor
Key dates
| Filing date | Dec 3, 1982 |
| Grant date | Dec 18, 1984 |
| Priority date | — |
| Expiry date | Dec 3, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S180/904
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A lifting dolly is provided for quickly and easily lifting a helicopter or the like while on the ground and for transporting the helicopter for maintenance or storage purposes. The lifting dolly comprises a relatively low profile central frame supported for rolling movement by a pair of wheel assemblies and including laterally outwardly pivoting lifting arms for engaging the skid tubes of a helicopter. In use, the dolly is positioned beneath the helicopter and the frame is lowered to rest upon the ground whereupon the lifting arms are pivoted outwardly to press wedge-shaped lifting fingers beneath the skid tubes. Rollers on the underside of the frame permit lateral frame shifting as the fingers engage the skid tubes such that the dolly centers itself between the skid tubes. When the skid tubes are engaged, the frame is elevated by the wheel assemblies to lift the helicopter for convenient rolling movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.