Patent ID: 6817448
Filing Date: 2004-11-16
Classification: B64C,F16H,F16N,Y10T

Abstract:
A system for lubricating and cooling a mechanical assembly, said system comprising:a main lubricating and cooling device circulating a stream of lubricating and cooling liquid through said mechanical assembly at a relatively high pressure; and an auxiliary backup device set in operation automatically or manually when said main device becomes defective, said backup device comprising: at least one reservoir of lubricating and cooling liquid; at least one source of pressurized gas; at least one spray nozzle which is fed, on the one hand, with the lubricating and cooling liquid from said reservoir provided under pressure and, on the other hand, with the pressurized gas from said source, and which is able to spray a mist of the lubricating and cooling liquid onto said mechanical assembly so as temporarily to supplement the defective main device, wherein: said reservoir of the auxiliary backup device is independent of said main device; said spray nozzle is fed with the lubricating and cooling liquid from said reservoir at a pressure at most equal to 2 bar (2.105 pascal); and the lubricating and cooling liquid contained in said reservoir is pressured by a pump the outlet of which is connected to said reservoir by a bypass comprising a calibrated valve that opens as soon as an outlet pressure of said pump becomes higher than a feed pressure of the lubricating and cooling liquid recieved by the spray nozzle.