PULSATING LUBRICANT FEEDER Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: casing with channels has a pipe union whose recess accommodates a spring-loaded sealed piston installed with a circular clearance. Nonreturn inlet valve has the form of a flexible flat washer with self-packing shoulder, clamped between pipe union and casing. The piston is made up of two discs of which upper one has a through axial channel interacting with a flexible member installed between the discs. A step disposed in the end of the casing recess interacts with shoulder and is axially movable. The flexible member is formed by piston seal and nonreturn check valve, has a through axial channel and is installed with interference in casing recess. EFFECT: improved design. 3 cl, 1 dwg