Safeguard system of a speed increasing/reducing mechanical assem

Details Safeguard system of a speed increasing/reducing mechanical assem Safeguard system of a speed increasing/reducing mechanical assem

1992-10-27

1994-09-06

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

60 3908, 184 611, 74467, 74606A, 244 60, B64C 2712

Patent

active

053441010

ABSTRACT:
The invention relates to a safeguard system for speed increasing/reducing mechanical assembly, especially of the helicopter "gear box" type, in case of lubricating oil loss, which comprises an additional cooling system the casing of the said mechanical assembly, with an inlet (1) and an outlet (2) arranged on the casing (3) of this mechanical assembly. The inlet (1) and the outlet (2) closed during normal operation and they open under the effect of a control device at a preset value of a parameter significant for lubricating oil loss, whereby this control device actuates simultaneously the additional cooling system, in order to provide a circulation of the coolant between the inlet (1) and the outlet (2) so that this coolant, loaded with the calories further to the warm-up caused by the lubricating oil loss, may evacuate the said calories outside via the outlet (2) of the additional cooling system, which is of the air circulation type.

REFERENCES:
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patent: 4717000 (1988-01-01), Waddington et al.
patent: 4852693 (1989-08-01), Nakajima et al.
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patent: 4891934 (1990-01-01), Huelster
patent: 5046306 (1991-09-01), Borre, Jr.
patent: 5097926 (1992-03-01), Duello
patent: 5189929 (1993-03-01), Chory
patent: 5193645 (1993-03-01), Francois

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