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:
Nov. 13, 2007
Filed:
Jan. 10, 2007
Applicant:
Vincent Chang, Changhua City, Changhua Hsien, TW;
Inventor:
Vincent Chang, Changhua City, Changhua Hsien, TW;
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21F 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cable tightening device includes a fixed unit, a rotation member, two opposite ratchet wheels, and a movable unit. The movable unit includes a movable member, a drive handle and two opposite torsion springs. Thus, the torsion springs are arranged on the movable member symmetrically to provide a predetermined elastic force to the drive handle to eliminate an oblique force produced during the movement of the drive handle, so that the push plates of the drive handle are slidable in the guide slots of the movable member smoothly and exactly without incurring deflection.