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:
Mar. 29, 2005
Filed:
Apr. 02, 2003
Chin-fa Huang, Tu-chen, TW;
Chin-Fa Huang, Tu-chen, TW;
Hon Hai Precision Ind. Co., Ltd., Taipei Hsien, TW;
Abstract
A hinge device includes a housing (), a shaft (), and a pair of springs () coiled in opposite directions from each other. The housing defines a through hole () and a slot () therein. The through hole includes a large hole () and a small hole (), the large hole communicating with the slot. The shaft includes a first portion (). Each spring has a free end (), and forms a plurality of protrusions () on an inner surface thereof. The shaft is rotatably received in the through hole of the housing. The springs are frictionally positioned around the first portion of the shaft, the free ends of the springs being retained in the slot of the housing.