Lifting frame with hydraulic lines for an accessory hydraulic system
US7255201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2003 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Feb 27, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S414/131
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A lifting frame has a stationary vertical mast (outer mast 1), at least one telescoping lifting mast (inner mast 3), and a lifting carriage (4) movable on the lifting mast. At least one hydraulic line (5) installed on the lifting frame discharges at the lifting carriage (4). When the lifting frame is in the retracted position, the hydraulic line (5) forms a loop (S) which is open on top. The hydraulic line (5) is guided in the vicinity of the loop (S) by a tensioning pulley (6) that dips from above into the loop (S). The tensioning pulley (6) is fastened to a pulley carrier (7). The weight of the pulley carrier can be used to generate a bias force that is exerted on the hydraulic line (5), or drive means connected with the pulley carrier (7) can be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.