Patent · US Active

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

US11306715B2 · kind B2 · utility

2Cited by

2References

17Claims

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 25, 2018
Grant date	Apr 19, 2022
Priority date	—
Expiry date	Dec 7, 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 includes: a first (drive) screw spindle and a second (running) screw spindle that runs oppositely with respect to the first screw spindle; and a pump housing configured to receive the first and second screw spindles. The first and second screw spindles form, together with at least the pump housing, delivery chambers, which move from a suction side of the pump to a pressure side of the pump due to a rotation of the first and second screw spindles. The pump housing has a first abutment insert for the first screw spindle and a second abutment insert for the second screw spindle, and at least one of the first and second abutment inserts is set angled with respect to a first plane of the pump, to counteract operationally induced crossing of the first and second screw spindles.

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