Patent · US Expired

Tool and tool holder for manually operated tools

US5375950A · kind A · utility

4Cited by

6References

7Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Reinhard Schulz · Hannover, DE
Werner Kleine · Achim, DE

Key dates

Filing date	Jul 13, 1993
Grant date	Dec 27, 1994
Priority date	—
Expiry date	Jul 13, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T408/95
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The clamping shank (1) of a chisel-cutting and/or percussion boring tool bits has stop faces effective in the axial direction and in the circumferential direction. Entrainment faces (2), open towards a free end of the clamping shank (1) are located upstream of these stop faces in the direction of the cutting area of the tool bits. The radial dimension (r) of the essentially radially extending entrainment faces (2) is greater than their axial dimension (a). In cooperation with an appropriately designed tool bit receptacle, the entrainment faces (2) can carry such a large share of the torque, that the stop faces are effectively relieved or unloaded.

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