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:
Mar. 25, 2003
Filed:
Feb. 29, 2000
Applicant:
Inventors:
Assignee:
Makita Corporation, Anjo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23Q 5/00 ;
U.S. Cl.
CPC ...
B23Q 5/00 ;
Abstract
The present invention relates to a powered screw driver having a spindle that is caused to rotate by an electric motor within a range of about 5000 rpm (revolutions per minute) to about 7000 rpm (revolution per minute) when the spindle idles. Because the spindle rotates at a high revolution speed, the screw-fastening operation can more quickly be completed when the user of the screw driver fastens the screw in a normal posture. The screw driver may used to fasten screws having a pitch within a range of about 1.3 mm to 2.0 mm (i.e. about {fraction (1/32)} inch to {fraction (3/32)} inch).