Tractor for maneuvering an airplane without a tow bar
US4810157A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1988 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Mar 7, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64F1/227
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In the use of a tractor to maneuver an airplane on its nose landing gear, which tractor includes a chassis (10); having a rear access (32) which receives said nose wheels and having two telescoping bars (38) the length of which can be adjusted by means of first hydraulic cylinders (40) and to the rear ends of which (38.2.1) pivotable pulling arms (54) are hingedly connected for engagement behind the nose wheels; and having a support surface (30.3) for the raising of the nose landing gear, which is performed by means of second hydraulic cylinders (44), in order to cause less wear on the nose wheels during loading and raising and to prevent damage to the tractor and/or nose landing gear in the attempt to pull said nose landing gear into the recess by means of the pulling arms, it is suggested: PA1 (a) to form the chassis in two parts and to hingedly connect its front portion (10.1) with its rear portion (10.2) at a folding axis (36) and by means of the second aggregates (44) above this axis; PA1 (b) to arrange the immovable portions (38.1) of the telescoping bars and the cylinders (40.1) of the first aggregates (40) on the front portion of the chassis; PA1 (c) to form the support sur…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.