The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 1991
Filed:
Feb. 09, 1990
Applicant:
Inventor:
Willy Kress, Bisingen, DE;
Assignee:
Kress-elektrik GmbH & Co., Elektromotorenfabrik, Bisingen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
173 12 ; 173 13 ; 81473 ;
Abstract
A power-driven screwing tool comprising an electric drive motor, an adjustable depth stop, a drive shaft receiving the screwing tool and adapted for being displaced relative to the depth stop. Between the drive motor and the drive shaft, a first clutch (jaw clutch) transmits the driving torque by form-locking engagement, while a second clutch responds to the predetermined screwing depth and acts to release the form-locking engagement of the first clutch by comprising a transverse pin being engaged or disengaged by a guide pocket whose bottom surface extends at a certain inclination relative to the longitudinal axis of the drive shaft.