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:
May. 18, 1999
Filed:
Oct. 14, 1997
Applicant:
Inventor:
Andre Graffin, Andernos, FR;
Assignee:
Serac Group, La Ferte Bernard, FR;
Primary Examiner:
Int. Cl.
CPC ...
F16H / ;
U.S. Cl.
CPC ...
74130 ; 53317 ; 533315 ; 91 59 ; 91468 ;
Abstract
A screwdriving spindle assembly comprising a spindle shaft provided with a holding device and secured to a gear wheel rotated by a drive assembly which comprises a pressurized fluid actuating cylinder having a piston rod secured to a transmission system, and a member for adjusting pressure disposed on a line for feeding fluid to the cylinder in the screw-tightening direction.