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:
May. 29, 2001
Filed:
Mar. 09, 1999
Koichi Saito, Kanagawa, JP;
Masakazu Watanabe, Kanagawa, JP;
Masatoshi Yasui, Kanagawa, JP;
Ken Takahashi, Kanagawa, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
In order to superimpose and store optical fiber ribbons in a corresponding one of spiral grooves provided in the outer circumferential surface of a spacer, an optical fiber ribbon stranding device includes: a device for advancing the spacer straight while rotating the spacer around the center axis of the spacer, the advancing device being constituted by, for example, a tension giving device and a take-up device; a device for feeding a plurality of optical fiber ribbons; a guide die for guiding the optical fiber ribbons into the corresponding one of the spiral grooves; and an alignment keeping guide disposed upstream of the guide die. A rectangular hole is provided to extend through the alignment keeping guide, and the optical fiber ribbons are passed through and superimposed by the hole. The optical fiber ribbons kept in a superimposed state by the alignment keeping guide is introduced and accommodated into the corresponding one of the grooves of the spacer through the guide die.