Title:
CYLINDRICAL BODY
Document Type and Number:
Japanese Patent JP3323059
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a cylindrical body as a whole from being deformed by making respectively the thickness of each layer const. in the circumferential direction and making respectively the product of the longitudinal elastic modulus and the linear expansion coefficient of each layer const. in the circumferential direction.
SOLUTION: To make bending force of a cylindrical body approximately const. regardless of the angular position by bringing the thickness of each layer close to const. regardless of the angular position, a thin prepreg 10E wherein reinforcing fibers are directed mainly in the circumferential direction is wound so that to one layer is a little laminated. A thick prepreg 10J wherein reinforcing fibers 10S are mainly directed in the axial length direction is wound thereon and when the starting edge 10K of winding of this prepreg 10J and the ending edge 10K' of winding are arranged in order in inclined shape and these inclined edges 10K and 10K' are laminated so as to joint them together, even if the width of the prepreg 10J is deviated a little from the length of winding for one time, a space for lamination can be obtd. and when it is molded, a cylindrical body with almost no change in thickness along the circumferential direction can be obtd.
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Inventors:
Nobuhiro Takada
Application Number:
JP11027296A
Publication Date:
September 09, 2002
Filing Date:
April 05, 1996
Export Citation:
Assignee:
Daiwa Seiko Co., Ltd.
International Classes:
A01K87/00; A63B49/10; A63B53/10; A63C11/22; B29D23/00; B32B1/08; B62K3/02; A63B102/02; A63B102/04; A63B102/32; (IPC1-7): B32B1/08; A01K87/00; A63B49/10; A63B53/10; A63C11/22; B62K3/02
Domestic Patent References:
| JP60212334A |
Attorney, Agent or Firm:
Toshiro Ochi