Linear, hydraulic pivot drive
US7028602B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 21, 2003 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Feb 21, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18056
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a linear, hydraulic pivot drive, especially for the flap control system of aerodynamic structures. Said pivot drive comprises a housing provided with ports for introducing a hydraulic medium, a piston which is arranged inside the housing and can be axially displaced by the effect of the hydraulic medium, and an output shaft which is provided with coarse threads and interacts with the piston in order to cover the axial displacement of the piston into a rotational movement. The invention is characterized in that the output shaft is integrated into the piston, the coarse threads running in the same direction and engaging in the piston, and the cross-section of the piston has a spline profile for effectively preventing a rotational movement of the piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.