Patent · US Active

Screw spindle pump, fuel pump assembly, and fuel pump unit

US11293433B2 · kind B2 · utility

1Cited by

4References

9Claims

0Family size

Assignee

VITESCO TECHNOLOGIES GMBH · DE

Inventors

Johannes Deichmann · Lengede, DE
Tim Gonnermann · Treffurt, DE
Marc Völker · Schwalbach am Taunus, DE

Key dates

Filing date	Jun 18, 2018
Grant date	Apr 5, 2022
Priority date	—
Expiry date	Nov 27, 2038

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C2240/30
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A screw-spindle pump comprising: first and second screw spindles forming running and drive spindles, respectively, and a pump housing configured to receive the first and second screw spindles. The first and second screw spindles form, with at least the pump housing, delivery chambers, moving from a suction side to a pressure side of the pump as a consequence due to rotation of the screw spindles. The pump housing has an elongate insert, as an abutment for the first and second screw spindles and against which the first and second screw spindles are supported, the elongate insert having a first portion forming a first abutment for the second screw spindle and a second portion forming a second abutment for the first screw spindle. The elongate insert is clamped into a receptacle of the pump housing using a cross-sectional dimension of the elongate insert.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.