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:
Apr. 18, 1995
Filed:
Aug. 09, 1993
Applicant:
Inventor:
John A Badiali, Middleboro, MA (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
81 573 ; 81 591 ; 81 5731 ;
Abstract
The drive speed of a drive shaft of a screwdriver is selectable by a user by holding a gear transmission housing. Two sets of pinch rollers are employed to rotate the drive shaft at one speed. When the housing is held, one set of pinch rollers is disengaged from the drive shaft, while the other set is engaged through a step-up gear transmission to rotate the drive speed at a greater speed.