公开(公告)号：WO1998010157A1

公开(公告)日：1998-03-12

申请号：PCT/US1997015250

申请日：1997-08-28

Applicant: WEYERHAEUSER COMPANY

Inventor： WEYERHAEUSER COMPANY ,  BASSETT, Kendall, H. ,  DIMAKIS, Alkivadis, G. ,  HASENWINKLE, Earl, D. ,  KERNS, John, W. ,  SELBY, John, S. ,  WAGNER, Richard, E. ,  WILDERMAN, Ronald, C.

IPC: E04C03/14

CPC classification number: B27M3/0053 ,  B27B1/00 ,  E04C3/14 ,  Y10T156/1061 ,  Y10T156/1075 ,  Y10T428/24058 ,  Y10T428/24066 ,  Y10T428/24091 ,  Y10T428/24099 ,  Y10T428/24132 ,  Y10T428/24942 ,  Y10T428/24992 ,  Y10T428/31989

Abstract: The invention comprises engineered structural wood products particularly useful in critical applications such as joists, headers, and beams where longer lengths, greater widths, and higher and predictable stress ratings may be required. The invention is also directed to a method for making the wood products. Most logs by nature are radially anisotropic, having wood of higher density and stiffness in their outer portion adjacent the bark than is found in the inner portion. The logs are machined to segregate the denser, stiffer outer wood. A first generally rectangular component (4) is formed from the less dense inner wood. Second generally rectangular components (6) are formed from the stiffer outer wood. Second components are adhesively bonded to at least one edge of the first components, more usually to opposite edges. The stiffer wood is thus specifically placed where it will contribute most effectively to the properties of the product. The product is analogous to an I-beam in which the lower density first component serves as the web and the higher density second component as the flange portion. The products can be handled in use in identical fashion to solid sawn lumber. They are characterized by much less variation in their stiffness than solid sawn visually or machine graded products and can be made in a wide range of width, thickness, and length.

Abstract translation: 本发明包括在关键应用中特别有用的工程结构木制品，例如托梁，集管和梁，其中可能需要更长的长度，更大的宽度以及更高和可预测的应力等级。 本发明还涉及一种用于制造木制品的方法。 大多数原木本身是径向各向异性的，其在与外部部分相邻的外部部分中的密度和刚度较高的木材比在内部部分中发现。 原木被机械加工，以分离更密实，更硬的外木。 第一个大致矩形的部件（4）由较不密集的内木制成。 第二个大致矩形的部件（6）由较硬的外部木材形成。 第二组分粘合到第一组分的至少一个边缘，更通常地粘合到相对边缘。 因此，较硬的木材特别放置在最有效地对产品性能作出贡献的地方。 该产品类似于其中较低密度的第一部件用作纤维网和较高密度的第二部件作为凸缘部分的工字钢。 产品可以以与固体锯材相同的方式处理。 它们的特征在于硬度比实心锯切或机器分级产品的刚度变化更小，并且可以在宽的宽度，厚度和长度的宽范围内制造。

公开(公告)号：EP0950143B1

公开(公告)日：2003-06-11

申请号：EP97939675.1

申请日：1997-08-28

Applicant: WEYERHAEUSER COMPANY

Inventor： BASSETT, Kendall, H. ,  DIMAKIS, Alkivadis, G. ,  HASENWINKLE, Earl, D. ,  KERNS, John, W. ,  SELBY, John, S. ,  WAGNER, Richard, E. ,  WILDERMAN, Ronald, C.

IPC: E04C3/14

CPC classification number: B27M3/0053 ,  B27B1/00 ,  E04C3/14 ,  Y10T156/1061 ,  Y10T156/1075 ,  Y10T428/24058 ,  Y10T428/24066 ,  Y10T428/24091 ,  Y10T428/24099 ,  Y10T428/24132 ,  Y10T428/24942 ,  Y10T428/24992 ,  Y10T428/31989

Abstract: The invention comprises engineered structural wood products particularly useful in critical applications such as joists, headers, and beams where longer lengths, greater widths, and higher and predictable stress ratings may be required. The invention is also directed to a method for making the wood products. Most logs by nature are radially anisotropic, having wood of higher density and stiffness in their outer portion adjacent the bark than is found in the inner portion. The logs are machined to segregate the denser, stiffer outer wood. A first generally rectangular component (4) is formed from the less dense inner wood. Second generally rectangular components (6) are formed from the stiffer outer wood. Second components are adhesively bonded to at least one edge of the first components, more usually to opposite edges. The stiffer wood is thus specifically placed where it will contribute most effectively to the properties of the product. The product is analogous to an I-beam in which the lower density first component serves as the web and the higher density second component as the flange portion. The products can be handled in use in identical fashion to solid sawn lumber. They are characterized by much less variation in their stiffness than solid sawn visually or machine graded products and can be made in a wide range of width, thickness, and length.

公开(公告)号：EP1009598A1

公开(公告)日：2000-06-21

申请号：EP98926305.8

申请日：1998-06-04

Applicant: WEYERHAEUSER COMPANY

Inventor： WILDERMAN, Ronald, C. ,  KERNS, John, W. ,  WAGNER, Richard, E. ,  DIMAKIS, Alkivadis, G. ,  SELBY, John, S.

IPC: B27B1/00 ,  B27L5/06

CPC classification number: B27B1/007 ,  B27L5/06 ,  Y10T156/1075

Abstract: The invention is a method for producing flitches (12) prepared from roundwood logs (2), to the manufacture of wood slices or slats (20) from the flitches (12), and to the methods of combining the strips into composite lumber products. The method is based in part on the concept of preparing flitches (12) that retain the sweep or natural longitudinal curvature of the log and slicing around the sweep to prepare the slats (20) for further conversion into composite lumber products. An opening cut (4) is made in the log (2) essentially following or parallel to the curve of any sweep to divide it into two approximately equal volume pieces. An opposing surface (14) is machined parallel to the surface generated by the opening cut to produce a flitch. The flitches (12) are then sliced around the sweep curvature to produce slats (20). The natural surface of the log is preferably retained on the sides of the flitches. Slats may then be edged and adhesively combined in various ways to produce composite lumber products. The method achieves an especially high yield from raw logs of products that simulate solid sawn lumber in appearance, properties, and ease of use.

公开(公告)号：EP0950143A1

公开(公告)日：1999-10-20

申请号：EP97939675.0

申请日：1997-08-28

Applicant: WEYERHAEUSER COMPANY

Inventor： BASSETT, Kendall, H. ,  DIMAKIS, Alkivadis, G. ,  HASENWINKLE, Earl, D. ,  KERNS, John, W. ,  SELBY, John, S. ,  WAGNER, Richard, E. ,  WILDERMAN, Ronald, C.

IPC: B27M1 ,  B27B1 ,  B27M3 ,  E04C3

CPC classification number: B27M3/0053 ,  B27B1/00 ,  E04C3/14 ,  Y10T156/1061 ,  Y10T156/1075 ,  Y10T428/24058 ,  Y10T428/24066 ,  Y10T428/24091 ,  Y10T428/24099 ,  Y10T428/24132 ,  Y10T428/24942 ,  Y10T428/24992 ,  Y10T428/31989

Abstract: The invention comprises engineered structural wood products particularly useful in critical applications such as joists, headers, and beams where longer lengths, greater widths, and higher and predictable stress ratings may be required. The invention is also directed to a method for making the wood products. Most logs by nature are radially anisotropic, having wood of higher density and stiffness in their outer portion adjacent the bark than is found in the inner portion. The logs are machined to segregate the denser, stiffer outer wood. A first generally rectangular component (4) is formed from the less dense inner wood. Second generally rectangular components (6) are formed from the stiffer outer wood. Second components are adhesively bonded to at least one edge of the first components, more usually to opposite edges. The stiffer wood is thus specifically placed where it will contribute most effectively to the properties of the product. The product is analogous to an I-beam in which the lower density first component serves as the web and the higher density second component as the flange portion. The products can be handled in use in identical fashion to solid sawn lumber. They are characterized by much less variation in their stiffness than solid sawn visually or machine graded products and can be made in a wide range of width, thickness, and length.