Patent · US Active

Internal gear pump having an internally toothed ring gear supported in a rotatable bearing

US9068569B2 · kind B2 · utility

1Cited by

2References

6Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Harald Speer · Freiberg, DE
Norbert Alaze · Markgröningen, DE
Karl-Heinz Hach · Schwieberdingen, DE
Andreas Klein · Bonn, DE
Edgar Kurz · Haigern, DE

Key dates

Filing date	Sep 25, 2013
Grant date	Jun 30, 2015
Priority date	—
Expiry date	Sep 25, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04C15/0019
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An internal gear pump includes a separator arranged in a pump chamber of the internal gear pump. The separator divides the pump chamber into a delivery chamber and a suction chamber and is arranged so as to be radially moveable and capable of pivoting. The internal gear pump further includes a bearing ring in which a ring gear of the internal gear pump is rotatably supported such that it can pivot about a pin. A pressure prevailing in the pump chamber when the internal gear pump is in operation acts on the ring gear and the bearing ring with a torque, which acts inwardly from the pin in a circumferential direction to the suction chamber and presses tooth tips of teeth of the ring gear inwards against the separator and presses the separator inwards against tooth tips of teeth of the pinion.

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