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. 30, 1999
Filed:
Apr. 21, 1997
Junji Taira, Nasu-gun, JP;
Masahiro Nakajima, Nasu-gun, JP;
Kouji Minami, Nasu-gun, JP;
Hiroyuki Tokita, Nasu-gun, JP;
Tatsuo Koshigoe, Nasu-gun, JP;
Nobuo Suzuki, Nasu-gun, JP;
Seiko Instruments Inc., , JP;
Abstract
A ferrule for optical connectors which is of funnel type comprising a ferrule body, containing a small-diameter hole and a large-diameter hole having a larger diameter than the small-diameter hole, the small-diameter hole and the large-diameter hole being formed so as to allow an optical fiber to pass therethrough and communicate with each other, the ferrule further comprising a buffering hole having a diameter which is larger than that of the small-diameter hole but smaller than that of the large-diameter hole, the buffering hole being formed between the small-diameter hole and the large-diameter hole and containing groove of concave and convex pattern on the internal surface of the buffering hole. The ferrule body further contains three lines of protrusions extending along the axial thereof, which are formed on the internal surface of the large-diameter hole.