Patent · US Expired

Drill mount

US3984192A · kind A · utility

31Cited by

6References

25Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Karl Wanner · Echterdingen, DE
Reinhardt Hahner
Wolfgang Schmid · Regensburg, DE
Manfred Bleicher
Horst Sigg
Jorg Falchle · Neckartenzlingen, DE

Key dates

Filing date	Jul 13, 1973
Grant date	Oct 5, 1976
Priority date	—
Expiry date	Jul 13, 1993

Classification

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

Abstract

A rotary spindle of a drill mount has a free end provided with a thread whose angle of rise is so selected that its tangent is at least equal to the coefficient of static friction of steel on steel.

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