Positive-Displacement Pump Including a Pressure Absorber
AssigneesMichelin Recherche et Technique S.A., Compagnie Generale Des Etablissements Michelin
InventorChristophe Ougier
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Abstract
The positive-displacement pump (10) comprises a pump body (12) delimiting a rubber pressurizing chamber (14), and a feeder (16) for feeding the chamber (14) with rubber. The feeder (16) comprises a worm (42) able to rotate about a main axis (X) with respect to the pump body (12) and an absorption body (50) that absorbs the pressure of the pressurizing chamber (14) and is axially secured to the worm (42). The absorption body (50) is distinct from the worm (42), and has a surface (54) delimiting the pressurizing chamber (14) and arranged axially in line with the worm (42).
Claims10
A positive-displacement pump comprising a pump body delimiting a rubber pressurizing chamber, and a feeder for feeding the chamber with rubber, the feeder comprising a worm able to rotate about a main axis with respect to the pump body, wherein the feeder comprises an absorption body that absorbs the pressure of the pressurizing chamber and is axially secured to the worm and distinct from the worm, the absorption body having a surface delimiting the pressurizing chamber and arranged axially in line with the worm.
A rubber feeder for a positive-displacement pump comprising an axial rubber shearing part exhibiting symmetry of revolution about a main axis and an axial rubber distributing part comprising an axial absorption part for absorbing the pressure applied by the rubber between the axial shearing part and the axial absorption part, the axial absorption part comprising an absorption body that has a surface positioned axially in line with the axial shearing part.
Dependencies are inferred from the claim text.