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US 7,008,684 B2Granted
Strandboard molding having holes at angles of 20 degrees to vertical or more
AssigneeGFP Strandwood Corp.
InventorBruce A. Haataja
Life of this patent
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Abstract
Mold apparatus for molded wood strand three-dimensionally carved articles of manufacture using at least one hole punch comprised of a base and a funnel shaped hole-defining portion having a funnel angle of 20 degrees or greater to vertical for producing molded holes at angles of 20 degrees or greater to vertical, to facilitate insertion of items such as a T nut within the molded hole in an assembly-line like fashion.
Claims5
An apparatus for forming holes in molded wood flake parts comprising:
- a bottom mold die and a top mold die, each having a surface configured to define a cavity therebetween;
- a punch having a lopsided funnel-shaped hole defining portion projecting from the cavity defining surface of said to mold die, wherein said funnel shaped portion has a funnel angle of between approximately 20 degrees and approximately 50 degrees with respect to the stroke direction of the top and bottom mold dies, said bottom mold die including a punch receiving aperture into which wood flakes are pressed by said punch;
- wherein the funnel angel is located on one side of the hole defining portion of said punch, and the opposite side of said punch is tapered only slightly with respect to the punch stroke direction to create a slight draft angle.
Dependencies are inferred from the claim text.