Patent · US Expired

Positioner for rotary tool

US4266893A · kind A · utility

6Cited by

4References

6Claims

0Family size

Assignee

Forschungsinstitut fur Holztechnologie · DE

Inventors

Johannes Troger · Radebeul, DE
Gernot Lauter · Dresden, DE
Heinrich Sporl · Dresden, DE

Key dates

Filing date	Oct 16, 1978
Grant date	May 12, 1981
Priority date	—
Expiry date	Oct 16, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T409/309632
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A rotary tool is rotationally coupled to but axially slidable along a shaft that is driven by a motor. This tool is biased axially in one direction by a compression spring on the shaft and in the opposite direction engages via a thrust bearing on a force-transmission member. A spindle threaded in the machine housing engages this force-transmission member via a ball centered on the axis so that when the spindle is screwed relative to the housing it can axially displace this force-transmission member against the force of the spring to position it.

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