Overload protection apparatus for variable pitch propellers
US4465431A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1982 |
| Grant date | Aug 14, 1984 |
| Priority date | — |
| Expiry date | Jun 24, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18936
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Disclosed is an overload protection apparatus for variable pitch propellers, particularly cycloidal propellers. The apparatus is of the kind having a hydraulic servomotor (2) with an adjustment rod (1) for actuating a propeller, and having mechanical restoration means comprising an auxilliary adjustment means for adjusting a restoring lever (5) via an intermediate lever (6). As disclosed, the restoring lever (5) is pivotally linked to a first arm of the intermediate lever (6) which in turn is pivotally mounted on said adjustment rod (1) at a fulcrum (9). The first and second arms of the intermediate lever extend from opposite sides of the fulcrum. The second arm of the intermediate lever preferably includes a slideway (15) which receives a slide-shoe (16) affixed to an auxilliary adjustment lever (7), which is preferably an angular lever on which the auxilliary adjustment means acts at the end (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.