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:
Sep. 29, 2015
Filed:
Aug. 05, 2014
Primax Electronics Ltd., Taipei, TW;
A-Ming Chang, Taipei, TW;
Ying-Che Tseng, Taipei, TW;
PRIMAX ELECTRONICS LTD., Taipei, TW;
Abstract
A passive touch pen for a capacitive touch screen is provided. The passive touch pen includes a pen tube, a fixing post, and a conductive rubber tip. The pen tube has a vent. The fixing post is disposed within the pen tube, and includes a first perforation and a second perforation. The first perforation is open to a top surface of the fixing post. The second perforation is open to a lateral surface of the fixing post. The conductive rubber tip is sheathed around the fixing post and exposed outside the pen tube. After the conductive rubber tip is no longer compressed, air can be quickly introduced into to a vacant space between the conductive rubber tip and the top surface of the fixing post through the vent, the second perforation and the first perforation. Consequently, the conductive rubber tip is restored to an original non-compressed shape.