Fluid reaction surfaces (i.e. – impellers) – With control means responsive to non-cyclic condition...
Patent
1982-06-24
1984-08-14
Marcus, Stephen
Fluid reaction surfaces (i.e., impellers)
With control means responsive to non-cyclic condition...
416 43, 416108, 416156, 92140, 74104, B64C 1106
Patent
active
044654316
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).
REFERENCES:
patent: 3241618 (1966-03-01), Bear
patent: 3700349 (1972-10-01), Fork
patent: 3704961 (1972-12-01), Fork et al.
patent: 3864914 (1975-02-01), Timmins
patent: 4348156 (1982-09-01), Andrews
Carvis Thaddius J.
J. M. Voith GmbH
Kwon John
Marcus Stephen
Reens Louis H.
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