Patents by Inventor Lars Hammarberg

Lars Hammarberg 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).

  • Pallet with spacers
    Patent number: 4738204
    Abstract: The pallet of the invention includes a load deck supported on pallet feet or spacers. The spacers of the invention are metal sleeves, each with a serrated upper edge, the entire length of which is pressed into the wooden load deck to substantially the entire depth of the serrations. The serrations may be alternately set in opposite directions, and function to prevent turning and lateral movements of the spacers in relation to the load deck. The spacers are each retained against the load deck by at least two fastening means, which may be shaped like nails. The lower edge of each spacer may also be serrated for connecting to a skid to which the fastening means are also attached.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: April 19, 1988
    Inventor: Lars Hammarberg
  • Reinforced wood particle board and a method of producing it
    Patent number: 4514258
    Abstract: The invention relates to particle boards, e.g. wood particle- or chipboards, for building purposes, which have been reinforced by means of glass fibre filaments or threads placed in the boards. The threads are laid to obtain increased rupture strength and increased resistance to punch-through of concentrated loads, and are fixed at given spacing in conjunction with the board manufacturing process. The method of reinforcing the boards during manufacture is also included by the invention.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: April 30, 1985
    Inventor: Lars Hammarberg
  • Reinforced beam section and a method of producing it
    Patent number: 4430373
    Abstract: The invention relates to reinforced beam sections produced by forming the cross-sectional configuration of wood particle board, e.g. such as have been provided with bonded-in reinforcing threads (4,5,6,32,48). The latter have thereby been laid in the zones (33,34,45) of the boards where the beam section configuration changes direction during the formation of the beam. Beam sections in accordance with the invention will be light, corrosion-resistant and saving on material as well as having high breaking strength, due to the reinforcement. The field of use for such beam sections is very varied, but among more obvious uses may be mentioned those as beams in housing structures and different kinds of batten in the building trade. A method of laying the reinforcing threads in predetermined zones in the boards is also embraced by the invention.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: February 7, 1984
    Inventor: Lars Hammarberg