Lubricating device for a motor compressor

A drawn, metallic pick-up tube, especially for use for supplying lubricant to a lubricant passage in a hermetic device which includes a fluid sump and a vertically disposed rotary shaft above the fluid level in the sump, said tube comprising:

• a large diameter upper cylindrical portion open at the upper end and adapted for being fitted into a central bore in the shaft, said tube having an open, smaller diameter lower cylindrical portion adapted to be immersed in fluid in the sump, said lower cylindrical portion having an inner surface and an outer surface, a tapering transition portion connecting the upper and lower cylindrical portions, an inlet port extending axially into the lower end of said lower cylindrical portion, said lower cylindrical portion inner surface having an upper section and a very short lower section contiguous with said upper section and said inlet port, said lower section tapering inwardly toward said inlet port, and a pair of diametrically opposite axial deformations in said lower cylindrical portion forming grooves on the outer surface and ribs with rounded contours on the inner surface thereof.