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US5142994A Expired / Lapsed US ⏱️ 0.0 years remaining

Pallet and apparatus for forming a pallet with deep drawn legs

Assignee: Michigan Technological University
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Filing: 1991-11-25
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Granted: 1992-09-01
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Expires: 2011-11-25
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Abstract

Abstract A method and apparatus for molding articles such as pallets from flake-like wood particles mixed with binder, the pallets housing a deck and integral molding legs. A loosly fitted mat of wood flakes is formed by depositing a first plurality of layers of wood flakes onto a supporting surface with a flake aligners provided for causing alignment of those flakes which will form legs of the pallet. A second plurality of layers are formed with a flake aligner provided for causing alignment of flakes which will form the legs of the pallet and in a direction transverse to the direction of alignment of the flakes of the first layers.

Inventors

  • 👤 L. Bogue Sandberg
  • 👤 Bruce A. Haataja
  • 👤 Douglas C. Jurmu
  • 👤 Robert D. Palardy
  • 👤 Frank H. Story
  • 👤 William A. Yates

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 22:24
CPC Classifications
B; B65; B65D; B65D19/00; B65D19/0004; B65D19/0006; B65D19/003; B65D19/0032; B65D19/0036; B65D19/004; B27; B27N; B27N5/00; B65D2519/00; B65D2519/00004; B65D2519/00009; B65D2519/00014; B65D2519/00029; B65D2519/00039; B65D2519/00049; B65D2519/00064; B65D2519/00074; B65D2519/00258; B65D2519/00263; B65D2519/00268; B65D2519/00283; B65D2519/00288; B65D2519/00313; B65D2519/00318; B65D2519/00328; B65D2519/00338; Y; Y10; Y10S; Y10S108/00; Y10S108/901; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24066

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 320 words
A pallet comprising: a generally flat rectangular deck having a major plane and a flat upper surface, a plurality of spaced apart hollow leg members integral with said deck and projecting downwardly from said deck to support said deck, said deck and said leg members being molded as a one-piece unit from a mixture of a resinous particle board binder and thin elongated wood flakes, said thin elongated wood flakes being deposited in a loosely felted layered mat onto a supporting surface such that said thin elongated wood flakes lie in horizontal planes, the loosely felted layered mat being formed by depositing a first layer of thin elongated wood flakes onto a supporting surface and then depositing a second layer of thin elongated wood flakes onto the first layer, the first layer of thin elongated wood flakes of said loosely felted mat having selected portions, the thin elongated wood flakes of said selected portions being aligned in a first direction substantially parallel to one another, and the remainder of the thin elongated wood flakes forming said first layer lying in horizontal relation but in random orientation with resect to one another, and the second layer of said loosely felted mat having selected portions overlying said selected portions of said first layer and said selected portions of said second layer being comprised of thin elongated wood flakes aligned in substantially parallel relation to one another in a direction substantially perpendicular to the direction of alignment of the elongated wood flakes of said selected portions of said first layer, and the remainder of the thin elongated wood flakes forming said second layer lying in horizontal relation but in random orientation with respect on one another, said loosely felted mat being compressed in a mold to form said one-piece unit, and said hollow leg members being molded from said selected portions of said first layer and said selected portion of second said layer.
Claim 2
Dependent Claim 320 words
A pallet comprising: a generally flat rectangular deck having a major plane and a flat upper surface, a plurality of spaced apart hollow leg members integral with said deck and projecting downwardly from said deck to support said deck, said deck and said leg members being molded as a one-piece unit from a mixture of a resinous particle board binder and thin elongated wood flakes, said thin elongated wood flakes being deposited in a loosely felted layered mat onto a supporting surface such that said thin elongated wood flakes lie in horizontal planes, the loosely felted layered mat being formed by depositing a first layer of thin elongated wood flakes onto a supporting surface and then depositing a second layer of thin elongated wood flakes onto the first layer, the first layer of thin elongated wood flakes of said loosely felted mat having selected portions, the thin elongated wood flakes of said selected portions being aligned in a first direction substantially parallel to one another, and the remainder of the thin elongated wood flakes forming said first layer lying in horizontal relation but in random orientation with resect to one another, and the second layer of said loosely felted mat having selected portions overlying said selected portions of said first layer and said selected portions of said second layer being comprised of thin elongated wood flakes aligned in substantially parallel relation to one another in a direction substantially perpendicular to the direction of alignment of the elongated wood flakes of said selected portions of said first layer, and the remainder of the thin elongated wood flakes forming said second layer lying in horizontal relation but in random orientation with respect on one another, said loosely felted mat being compressed in a mold to form said one-piece unit, and said hollow leg members being molded from said selected portions of said first layer and said selected portion of second said layer.

References Cited (Backward Citations)

US4112162A Cited
US4061813A Cited
US4255477A Cited
US4221751A Cited
US4246310A Cited
US4408544A Cited
US4384019A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-09-01 1996-03-02 1996-09-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-09-01 2000-03-02 2000-09-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-09-01 2004-03-02 2004-09-01 $7700.00 Window Closed / Lapsed

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