Engine oil withdrawal device.

摘要

1. Engine oil withdrawal device, consisting essentially of a tapping cock connected to the pressurized circuit of engine lubricating oil, characterized in that it has a body of revolution (1) having internally an axial bore (6) in communication (3) with the oil circuit on the side of its connecting end (2) and provided at its other end with a spindle joint (7), and a closing-off element essentially having a cylindrical part (9) capable of sliding in sealed manner through the spindle joint (7) and of sliding in non-sealed manner in the said bore (6), the clearance existing between this cylindrical part (9) and this bore (6) delimiting the section of passage which determines the maximum flow of the tapping cock under the pressure used, the said cylindrical part (9) being followed on the downstream side with respect to the pressure by a conical part (10) ensuring progressive opening and closing during the axial sliding of the closing-off element, the latter being pushed in the direction of closing as far as a stop (15) under the action of the pressure of oil and, moreover, of a return spring (14).