Patent ID: 7500542
Filing Date: 2009-03-10
Classification: B64C,F16H,F16N,Y10T

Abstract:
1. 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 lubricating and cooling device set in operation automatically or manually in response to a condition that said main device becomes defective, said backup device comprising: a first path comprising at least one reservoir of lubricating and cooling liquid that operates to feed said lubricating and cooling liquid provided under pressure; a second path comprising at least one source of pressurized gas that operates to output pressurized gas from said source; a feed mechanism that receives said lubricating and cooling liquid provided by said first path and said pressurized gas provided by said second path and outputs said pressurized gas and liquid; at least a first spray nozzle and a second spray nozzle that each receive said pressurized gas and liquid output from said feed mechanism, for spraying said pressurized gas and liquid onto said mechanical assembly; and said first path further comprising a pressure and flow limiter arranged between said reservoir and said first and second spray nozzles, and wherein: said first and second spray nozzles are fed with the lubricating and cooling liquid from said reservoir at a pressure at most equal to 2 bar (2·10