System for lubricating mechanical members, in particular aircraft components, featuring a minimum emergency oil supply device

A system for lubricating mechanical members, particularly aircraft drive components, said system presenting a main circuit comprising a main tank containing lubricating oil, at least a main pump connected to said main tank, supply means for supplying said lubricating oil to said members, at least a delivery pipe connecting said pump to said supply means, means for recovering said lubricating oil subsequent to lubrication of said members, and recirculating means for recirculating said oil to said main tank;

• and an emergency device for ensuring at least a minimum supply of lubricating oil to at least some of said supply means in the event of a breakdown on said main circuit;
• characterised by the fact that said emergency device (14) comprises a storage tank (15) series-connected to said delivery pipe (8);
• intercepting means (16a, 16b) for intercepting oil flow along said delivery pipe (8) to and from said storage tank (15);
• at least an auxiliary pump (18) connected to said storage tank (15);
• an auxiliary delivery pipe (19) for connecting said auxiliary pump (18) to said supply means (6;
• 6b;
• 6d);
• and first distributing means (20) for selectively connecting said recovery means (9) to said recirculating means (10) to said main tank (4), or to said storage tank (15).