Throttling device of the oil between the sliding surfaces of the control mechanisms to oil, in particular between the surfaces of the distribution of the control mechanisms to axial pistons and rotary

摘要

767,213. Fluidbearings. THOMA, H. April 15, 1954, No. 11235/54. Class 12 (1). A surface 1SP1/SP, between two relatively rotating members, comprising a cylinder block 4 of an axial piston gear and a member 1 having oil supply and discharge ports 2, 3, has an annular groove 6 in its outer periphery. Oil from the supply port 2 is fed through a passage 7 which is put in communication with the groove 6 by one or more blind bores 8 disposed in the surface of the member 4. Some oil may flow back through the suction duct 3. The passages 7 may be provided with non-return valves. An annular groove 9 in the surface is in communication with the atmosphere through passages 10. Depressions 12, Fig. 4, may be provided in the groove 6. Modified forms of the groove 6 are shown in Figs. 5 and 6.