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:
Feb. 20, 2001
Filed:
Sep. 22, 1998
Applicant:
Inventors:
Assignee:
Sumitomo Electric Industries Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D 1/100 ; G02B 6/44 ;
U.S. Cl.
CPC ...
B29D 1/100 ; G02B 6/44 ;
Abstract
The present invention relates to an apparatus and method for making a slotted rod for an optical cable, which improves manufacturing efficiency, while alleviating the load applied to the apparatus. In the present invention, a rotatable die for forming a slot in a resin surface covering a tension member is rotated about the moving direction of the tension member such that the rotatable die alternately reverses its rotational direction for every predetermined reverse pitch of the tension member, and the tension member is alternately twisted in rotational directions opposite to the rotational directions of the rotatable die in synchronization with the rotation of the rotatable die.