Patents by Inventor Tauno B. Kilpela

Tauno B. Kilpela has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4506778
    Abstract: Apparatus for forming a loosely felted mat of elongated wood flakes, the wood flakes being aligned in parallel relation and parallel to the longitudinal direction of the mat. The apparatus includes a former for depositing wood flakes on a support surface in a uniformly dispersed, loosely felted relation, and a plurality of vertically oriented baffles positioned below the former and in mutually parallel alignment. The baffles are reciprocated in the direction of the mat to cause flakes lying across the baffles to fall between the baffles and to be aligned with the longitudinal direction of the mat.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: March 26, 1985
    Assignee: Board of Control of Michigan Technological University
    Inventor: Tauno B. Kilpela
  • Patent number: 4505663
    Abstract: Apparatus is described for forming a loosely felted mat of elongated wood flakes, the wood flakes being aligned in parallel relation and parallel to the longitudinal direction of the mat. The apparatus includes a former for depositing wood flakes on a support surface in a uniformly dispersed, loosely felted relation, and a plurality of vertically oriented baffles positioned below the former and in mutually parallel alignment. The baffles include a first set and a second set with respective ones of the second set of baffles being positioned between respective ones of the baffles of the first set. The baffles of the second set are reciprocated in the direction of the mat to cause flakes lying across the baffles to be aligned with the longitudinal direction of the mat.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: March 19, 1985
    Assignee: Board of Control of Michigan Technological University
    Inventor: Tauno B. Kilpela
  • Patent number: 4469216
    Abstract: Apparatus for forming a loosely felted mat of thin elongated wood flakes with said flakes being aligned in mutually parallel relation. The apparatus includes a mat supporting surface, a hopper for holding a quantity of wood flakes, and a funnel assembly for receiving wood flakes from the hopper and for causing the flakes to be aligned in substantially parallel side-by-side relation as they are deposited on the supporting surface. The funnel assembly includes a plurality of funnels positioned in adjacent side-by-side relation, the funnels each including inclined walls having lower edges defining an elongated narrow opening adjacent the supporting surface and upper edges defining an opening wider than said narrow opening and for receiving wood flakes from the hopper. The narrow openings of the funnels are parallel and distribute the flakes uniformly across the supporting surface.
    Type: Grant
    Filed: April 5, 8198
    Date of Patent: September 4, 1984
    Assignee: Board of Control of Michigan Technological University
    Inventors: Bruce A. Haataja, Tauno B. Kilpela, Gordon P. Krueger, Roy D. Adams
  • Patent number: 4337710
    Abstract: An article having non-planar portions, such as a pallet having a substantially flat deck member and a plurality of hollow leg members projecting integrally from the deck member, is molded as a one-piece unit from a loosely-felted, layered mat formed from a mixture of a resinous particle board binder and flake-like wood particles. The wood flakes have an average length of about 11/4 to about 6 inches, preferably about 2 to about 3 inches, an average thickness of about 0.005 to about 0.075 inch, preferably about 0.015 to about 0.025 inch, and an average width of 3 inches or less and no greater than the average length. Each layer of wood flakes in the mat lie substantially flat on a plane generally parallel to the major plane thereof and are randomly oriented to each other. The mat is placed between the male and female dies of a mold or press and compressed therein to substantially the desired shape under temperature and pressure conditions sufficient to bond the flakes together.
    Type: Grant
    Filed: July 2, 1980
    Date of Patent: July 6, 1982
    Assignee: Michigan Technological University
    Inventors: Bruce A. Haataja, Tauno B. Kilpela, Anders E. Lund, James F. Hamilton
  • Patent number: 4282910
    Abstract: A fingerling shear for shearing a length of wood in a plane transverse to the grain direction and for splitting the sheared length along the grain direction to form a plurality of fingerlings. The shear includes a planar shearing blade, supported for rotation about a generally vertical axis, the planar shearing blade including an involute cutting edge adapted to engage the elongated piece of wood during rotation of the blade and for shearing off a length of that piece of wood, and a plurality of splitting blades fixed to the lower surface of the planar shearing blade and spaced along the involute cutting edge, the splitting blades each including a leading cutting edge spaced from the involute cutting edge of the planar blade and extending tranversely to the lower surface, the cutting edges of the splitting blades being adapted to sequentially engage portions of the sheared length of the wood stock to sequentially split fingerlings from the sheared length.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: August 11, 1981
    Assignee: Michigan Technological University
    Inventors: Tauno B. Kilpela, Bruce A. Haataja
  • Patent number: 4248163
    Abstract: A molded unitarily formed pallet is provided, the pallet including wood particles bonded together by a cured binder in compressed relation. Also provided is a method for making such pallets. The pallet includes a deck having an upper supporting surface, a lower surface, a plurality of integral leg sections extending downwardly from the deck, and a densified integral peripheral portion surrounding the deck to provide increased strength at the periphery of the pallet. The pallet may also include narrow elongated wooden strips bonded to the densified peripheral edge to further increase the strength of the pallet.
    Type: Grant
    Filed: December 21, 1978
    Date of Patent: February 3, 1981
    Assignee: Board of Control of Michigan Technological University
    Inventors: Robert A. Caughey, Bruce A. Haataja, Tauno B. Kilpela, James F. Hamilton