Patent · US Expired

Grease lubricator, particularly for construction machine

US6145625A · kind A · utility

30Cited by

9References

7Claims

0Family size

Assignee

Krupp Bautechnik GmbH · DE

Inventors

Heinz-Jurgen Prokop · Ratingen, DE
Thomas Deimel · Bad Hersfeld, DE
Ferdinand Zumbach · Zweibrücken, DE

Key dates

Filing date	Feb 10, 1998
Grant date	Nov 14, 2000
Priority date	—
Expiry date	Feb 10, 2018

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16N11/10
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A lubricator for delivering grease lubricant to lubricating locations of a machine is coupled to a grease container and has a work chamber in which a delivery piston reciprocates. To ensure that a compressible medium, such as air which has been drawn into the work chamber is rapidly expelled therefrom, the work chamber is divided by a grease return device into a compressing portion and a delivery portion. Triggered by a sufficiently high pressure level which prevails in the compressing portion and which is present only during grease delivery, an otherwise blocked return connection is established between the compressing portion and a supply port which couples the grease container to the work chamber, as long as the head of the delivery piston, in the course of its grease delivery stroke (forward stroke) is situated in the compressing portion.

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