Patent · US Expired

Clutch for power screwdrivers

US4655103A · kind A · utility

64Cited by

4References

5Claims

0Family size

Assignee

C. & E. FEIN GMBH · DE

Inventors

Wolfgang Schreiber · Stuttgart, DE
Manfred Ludwig · Stuttgart, DE
Ewald Hald · Echterdingen, DE

Key dates

Filing date	Jan 13, 1986
Grant date	Apr 7, 1987
Priority date	—
Expiry date	Jan 13, 2006

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16D43/2022
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A clutch for power screwdrivers. It has a transmission, an adjustable bit stop, and a drive shaft. It also has a cogwheel with cams on one face and a clutch disk with catches on one face mounted on the drive shaft. The object is a low-noise, wear-resistant clutch. The drive shaft is in one piece. An intermediate disk with catches on one face and cams on the other face is positioned between the cogwheel and the clutch disk. A spring mechanism is positioned between the cogwheel and the intermediate disk.

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