Mast channel member configuration of forklift truck
US4614253A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 1984 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | May 21, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F9/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A mast structure of a forklift truck is composed of two vertically and parallelly extending channel members each of which has front and rear flanges. The thickness of the rear flange is so larger than that of the front flange that a ratio (e.sub.1 /e.sub.2) of a front-side figure center distance (e.sub.1) between a front-most end of the channel member and a center of figure in cross-section to a rear-side figure center distance (e.sub.2) between a rear-most face of the channel member and the center of figure is within a range of 1.1.ltoreq.e.sub.1 /e.sub.2 .ltoreq.1.5, thereby effectively improving flexural and torsional rigidities of the mast channel member of the forklift truck.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.