Structural chipboard wood beam

Details Structural chipboard wood beam Structural chipboard wood beam

1974-03-27

1978-09-05

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including grain, strips, or filamentary elements in...

428113, 428114, 428541, B32B 512

Patent

active

041121627

ABSTRACT:
A chipboard beam made of glue coated chips has top and bottom layers extending for the full length of the beam consisting of elongated chips, that may be for example as much as 5cm in length oriented with their fibers in the longitudinal direction of the beam. The middle layer is made of flat chips having random fiber orientations in a vertical plane parallel to the long dimension of the beam. The chips are glued together under heat and pressure in a press, with the result that there is great coherence both between and within the layers. The pressing is done with the wider cross-sectional dimension of the beam horizontal, so that at this stage the layers of chips are side-by-side longitudinal stringers. In order to provide higher density in the outer layers (top and bottom layers in the load bearing position of the beam) after a preliminary pressing of the bed downwards against the support of the bed, a lateral pressing of the edges with higher pressure is performed which provides increasing density of the edges which become the top and bottom of the beam.

REFERENCES:
patent: 2642371 (1953-06-01), Fahrni
patent: 2686143 (1954-08-01), Fahrni
patent: 2847733 (1958-08-01), Roy
patent: 2960423 (1960-11-01), Kreibaum
patent: 3164511 (1965-01-01), Elmendorf
patent: 3447996 (1969-06-01), Himmelheber et al.
patent: 3956555 (1976-05-01), McKean

Affiliated with

Also associated with

Rating

Structural chipboard wood beam does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Structural chipboard wood beam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structural chipboard wood beam will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2097347