Patent · US Expired

Screw driving tool

US6526852B2 · kind B2 · utility

8Cited by

8References

8Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Horst Rahmsdorf · Munich, DE
Thomas Hofbrucker · Fürstenfeldbruck, DE
Markus Looser · Weilheim, DE
Thomas Bader · Zürich, CH

Key dates

Filing date	Jul 3, 2001
Grant date	Mar 4, 2003
Priority date	—
Expiry date	Jul 3, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25B21/023
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A screw driving tool including a housing (1), a hollow spindle (3) rotatably supported in the housing (1) with a possibility of a limited axial displacement relative thereto, a screw-in spindle 5 at least partially extending in the hollow cylinder (3), connected thereto for joint rotation therewith, and supported for a limited axial displacement relative thereto, an impact mass (15) for displacing the screw-in-spindle (5) in a screw-in direction, a drive motor (2) for rotating the screw-in spindle (5), and a clutch (6) located between the hollow spindle (3) and the drive motor output shaft (19) for transmitting rotational movement to the hollow spindle (3).

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