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.

Date of Patent:
Aug. 17, 1993

Filed:

Aug. 24, 1992
Applicant:
Inventors:

Akira Kobayashi, Tokyo, JP;

Naohiro Ohori, Tokyo, JP;

Hiroyuki Yoshizawa, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138172 ; 138109 ; 138130 ; 138174 ; 138139 ;
Abstract

A bar-like molding made of fiber-reinforced plastic materials of the type which can be extended by connecting pieces thereof, comprises a fiber-reinforced plastic covering layer formed by laminating a plurality of fiber-reinforced plastic layers and short length metal pipes for connection arranged at the ends of the fiber-reinforced plastic covering layer, the fiber-reinforced plastic covering layer including an inner fiber-reinforced plastic covering layer composed of a plurality of fiber-reinforced plastic layers and abutting at its ends against the respective inner end surfaces of the short length metal pipes for connection, and an outer fiber-reinforced plastic covering layer composed of a plurality of fiber-reinforced plastic layers and formed in such a manner as to cover the outer peripheries of said inner fiber-reinforced plastic covering layer and the short length metal pipes for connection, the reinforcing fibers of at least one of the plurality of fiber-reinforced plastic layers of at least one of the outer reinforced plastic covering layer and the inner reinforced plastic covering layer being arranged in the axial direction of the bar-like molding. Preferably, at least the outermost layer of the outer fiber-reinforced plastic covering layer is formed as a layer whose reinforcing fibers are arranged 90.degree. to the axial direction.


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