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. 09, 1995
Filed:
Aug. 08, 1994
Hideaki Kawamatsu, Takarazuka, JP;
Sumitomo Rubber Industries Inc., Kobe, JP;
Abstract
The outer circumferential surface of a mandrel in a bar-shaped configuration is wound with reinforced fiber impregnated with a resin. This reinforced fiber is heat-treated and hardened, to thereby form a reinforced fiber layer in a tubular configuration around the mandrel. The mandrel is provided with a reduced portion in the axial middle thereof, which is decreased in the outside diameter thereof. This mandrel comprises a basic end side member and a terminal end side member which are both connected such that they can be separated at the reduced portion. The separation of both component members of the mandrel is conducted axially in opposite directions, and this allows the detachment of the mandrel out of the reinforced fiber layer.