Industrial truck with force-transmitting door with double hinge
US7455137B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 2006 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Jun 28, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F9/07536
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A counterweighted fork-lift truck has a vehicle frame (1) with a frame segment (2) having a lateral frame opening (2b). A pivoting door (3) covers the frame opening (2a). The door (3) is connected to the vehicle frame (1) by a double hinge (5). Protection against buckling is provided such that when the door (3) is in the closed position, an intermediate door leaf (3a) located between the axes of rotation (A1, A2) can be blocked in position with respect to an adjacent main leaf (3b). The protection against buckling has a spring element (24) with which, in the closed position of the door (3), the intermediate leaf (3a) is biased toward the open position and is in engagement with a stop (25), which is fastened to the main leaf (3b). The intermediate leaf (3a) and the main leaf (3b) enclose an obtuse angle (S).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.