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:
Aug. 20, 2013
Filed:
Nov. 27, 2012
Jun Fan Chen, Taichung, TW;
Jun Fan Chen, Taichung, TW;
Other;
Abstract
An expander includes a first head member, a rotating portion, a plurality of expanding members, and a tightening structure. The first head member and the rotating portion have conical faces corresponding to each other. The rotating portion has a threaded rod section which is screwed with the first head member. The expanding members are arranged around the two conical faces, and the expanding members tend to approach each other due to the tightening structure. When the rotating portion is rotated to approach the first head member, the expanding members are pushed outward to radially expand a tubular element. In addition, a plurality of restriction slots are formed on the conical face of the first head member, and each expanding member forms a corresponding rib slidably disposed in the restriction slot to improve stability.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile