Patent · US Active

Lubricating-grease pump and method for recovery of leakage grease of a lubricating-grease pump

US11085581B2 · kind B2 · utility

1Cited by

2References

9Claims

0Family size

Assignee

AKTIEBOLAGET SKF · SE

Inventors

Dieter Hess · Rheinbach, DE
Juergen Kreutzkaemper · Waibstadt, DE
Andreas Schoenfeld · St. Leon-Rot, DE
Stefan Schuermann · Walldorf, DE

Key dates

Filing date	Nov 9, 2018
Grant date	Aug 10, 2021
Priority date	—
Expiry date	Dec 27, 2039

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B2201/0208
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A lubricating-grease pump includes a pumping chamber, a leakage accumulation chamber, a seal configured to substantially seal the pumping chamber from the leakage accumulation chamber, at least one outlet from the pumping chamber, and at least one leakage-recovery arrangement configured to guide a quantity of grease that has leaked from the pumping chamber into the leakage accumulation chamber back into the pumping chamber. The leakage-recovery arrangement may include a first passageway connecting the leakage accumulation chamber to a storage region, a second passageway connecting the first passageway to the pumping chamber and a spring-biased piston in the storage region.

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