Patent · US Active

Drive shaft with insertion device for guiding cooling water

US10391674B2 · kind B2 · utility

0Cited by

3References

9Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Thomas Reichenberger · Landsberg am Lech, DE
Jochen Erhardt · Klosterlechfeld, DE

Key dates

Filing date	Jun 24, 2015
Grant date	Aug 27, 2019
Priority date	—
Expiry date	Oct 16, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16C2352/00
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A drive shaft for a machine tool, for example a core drilling machine, able to be connected to a drilling tool, in particular a core bit, is disclosed. The drive shaft contains a cavity which substantially extends over the whole length of the drive shaft and along the rotational axis. The cavity contains at least one inflow opening where, through the at least one inflow opening, water can be fed along the drive shaft into the drilling tool. In the drive shaft, an insertion device is provided in the cavity, through which water is guided for cooling the drive shaft, firstly, in a first direction and then in a second direction, where the water comes into direct contact with the inner side of the cavity at least in the first direction.

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