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:
Jul. 01, 1986
Filed:
Dec. 04, 1985
Applicant:
Inventor:
Chao-Yang Chen, Feng-Yuan City, TW;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
811295 ; 81133 ;
Abstract
A pipe wrench which comprises a body carrying a fixed jaw and pivoted to a handle and a L-shaped member having a rack portion movably inserted in the body and a movable jaw extending out of the body, wherein a pinion is disposed in the body to engage with the rack portion and a detent member which restricts the pinion to turn in a single direction. The detent member is of such a construction that also allow the rack portion to move outward and inward swiftly.