HOLLOW LAMINATED SQUARE TIMBER AND ITS MANUFACTURING PROCESS

Title:

HOLLOW LAMINATED SQUARE TIMBER AND ITS MANUFACTURING PROCESS

Document Type and Number:

Japanese Patent JP2006082471

Kind Code:

A

Abstract:

To provide a hollow laminated square timber which allows a square timber having a desired square cross section including the core to be taken out from a raw timber and also a square timber having a square cross section with the same size with the square timber from the remaining sapwood and its manufacturing process.

Hollow laminated square timber 10 is formed using four wood rods 14 having a trapezoidal cross section and has a hollow 11 extending in the longitudinal direction in the center. Surface 14a forming the long side of the trapezoidal cross section of each wood rod 14 constitutes the outer surface of hollow laminated square timber 10. Surface 14b forming the short side of the trapezoidal cross section of each wood rod 14 constitutes the inner surface of the hollow laminated square timber 10. Four wood rods 14 are integrated into one body with surfaces 14c forming the oblique sides of the trapezoids of the adjoining wood rods.

Inventors:

KANAI MASAHIRO
INOUE YOSHIHIKO
KAMIMURA HIROYUKI

Application Number:

JP2004271192A

Publication Date:

March 30, 2006

Filing Date:

September 17, 2004

Export Citation:

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Assignee:

SUMITOMO FORESTRY
SUMITOMO RINGYO FOREST SERVICE

International Classes:

B27M3/00; E04C3/12

Domestic Patent References:

JPS54107673U	1979-07-28
JPS63121507U	1988-08-08
JPS474956Y1	1972-02-21
JP2001054904A	2001-02-27

Attorney, Agent or Firm:

Osamu Hatori
Akihisa Iwamoto
Shuichi Maeda
Yoshiyuki Matsushima

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