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. 23, 1999
Filed:
Jul. 01, 1998
Yen-Yu Wang, Taichung, TW;
Other;
Abstract
A ratchet wrench including a handle and at least one fitting wheel rotatably mounted at one end of the handle. A middle section of outer side of the fitting wheel is formed with multiple annularly arranged teeth. A spiral rod is rotatably connected with two pivot sections of the handle near the fitting wheel. The spiral rod meshes with the teeth of the fitting wheel. One end of the spiral rod abuts against an intermediate member for reducing frictional force between the spiral rod and one of the pivot sections. The other end of the spiral rod is engaged with the other of the pivot sections. The spiral rod can cooperate with the teeth of the fitting wheel by any angle so that the handle of the ratchet wrench can be rotated by any angle without limitation of pitch.