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:
Jan. 22, 2013
Filed:
Apr. 13, 2011
Yoshiaki Yamauchi, Omitama, JP;
Hideyuki Nagamine, Urayasu, JP;
Seiji Hamaie, Kawasaki, JP;
Ikuo Nishida, Ebina, JP;
Tatsuya Yamasaki, Hitachinaka, JP;
Yoshiaki Yamauchi, Omitama, JP;
Hideyuki Nagamine, Urayasu, JP;
Seiji Hamaie, Kawasaki, JP;
Ikuo Nishida, Ebina, JP;
Tatsuya Yamasaki, Hitachinaka, JP;
Hitachi Consumer Electronics Co., Ltd., Tokyo, JP;
Hitachi-LG Data Storage, Inc., Tokyo, JP;
Abstract
From an optical disc drive, internal static electricity has to be discharged to the outside to prevent breakage of electric components such as laser diodes. A grounding spring has been used to discharge static electricity from a unit mechanism to the enclosure of the optical disc drive but it is necessary to improve the reliability of the drive in consideration of the dimensional accuracy and workability of the spring. Thus the free end of a grounding spring having a cantilever structure is shaped like an arc and an end of the grounding spring has a curved structure. This configuration improves the dimensional accuracy and workability of the spring, so that the performance of the optical disc drive can be more reliable.