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:
Jul. 26, 1994
Filed:
Apr. 07, 1993
Minoru Ishiharada, Kodaira, JP;
Rikuhei Itou, Kodaira, JP;
Itsuo Tanuma, Sayama, JP;
Kazuo Naito, Kawasaki, JP;
Yasuhiko Matsumuro, Bunkyo, JP;
Takao Aoki, Yokohama, JP;
Kiyoshi Koyama, Kamakura, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
An optical waveguide hose includes a hollow tubular cladding, a fluid core in the cladding, the fluid having a higher index of refraction than the cladding, and sealing plugs mated with opposite end openings of the cladding. In one form, the core fluid is filled in the cladding under positive pressure. In another form, a sheath of a gas barrier material encloses the outer periphery of the cladding. The pressurized fluid core or the gas barrier sheath prevents air from penetrating into the core, allowing the hose to maintain its light transmission function.