Flow control members made of themosetting synthetic polymer for hydraulic equipment units

Abstract

A plate (9, 10) made of hard material, having at least one flat surface machined by means of lapping and intended to be used as a member to control the flow in a hydraulic equipment unit, that consists of a thermosetting synthetic polymer, is made by means of molding and has in the regions different from its flat surface configurations suitable for cooperating directly with some specific members of a hydraulic equipment unit. The thermosetting synthetic polymer can be mixed with a solid lubricant. When the plate is a fixed plate, it presents the characteristic configurations of a bottom member that is directly connected to the cage (1) of a cartridge, whereas when the plate is a movable plate, it presents the characteristic configurations of a slide that cooperates directly with guide members and with members for operating the cartridge. The plate (9, 10) can incorporate configurations that constitute noise absorbing members (26, 27), connections or supports for seals (19, 20, 21, 22, 23, 24), and it can form a couple with another plate having similar or different features or with a conventional plate.

Dependencies are inferred from the claim text.