Patent · US Expired

Machine tool with a chamber for lubricating agent and a pressure equalization device for said chamber

US6739406B2 · kind B2 · utility

12Cited by

11References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Helmut Lebisch · Erlangen, DE
Otto Baumann · Echterdingen, DE
Rolf Mueller · Echterdingen, DE
Dietmar Saur · Lingen (Ems), DE

Key dates

Filing date	Aug 27, 2002
Grant date	May 25, 2004
Priority date	—
Expiry date	Sep 29, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/185
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The present invention is directed to a machine tool, in particular to a hand-operated hammer drill, having a compartment (10) containing lubricant in which at least one rotationally drivable component (12) is mounted and having a device (14) for compensating the pressure in the compartment (10), the device having a rotationally drivable centrifugal component (16) which shields at least one pressure-compensation channel (18) disposed downstream from it, in terns of fluid mechanics, in the venting direction of the compartment (10).It is proposed that the centrifugal component (16) be mounted in a torsionally fixed manner on the rotationally drivable component (12).

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