Patents by Inventor Alf H. Andersson

Alf H. Andersson 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).

  • Method and apparatus for spreading and distributing a solid or liquid particulate material
    Patent number: 4530462
    Abstract: A method and apparatus for separating, spreading and distributing a solid or liquid particulate material. The particulate material is pneumatically conveyed into a centrifugal chamber within a rotor (20) operatable by the flow of material for centrifugal separation of the particulate material. The terminal edge of the circumference of the centrifugal chamber serves as an overflow for establishing a buffer store and has a flow-retarding inwardly directed flange. A baffle may be provided around the terminal edge to intercept the material flung out and to conduct the material, via hopper-like flow-retarding recesses, to different outlets provided around the terminal edge.
    Type: Grant
    Filed: July 19, 1983
    Date of Patent: July 23, 1985
    Assignee: Ingenjorsfirman Alf Andersson Handelsbolag
    Inventor: Alf H. Andersson
  • Apparatus for planting seeds in drills at predetermined intervals
    Patent number: 4516690
    Abstract: An apparatus for planting seeds in drills at predetermined intervals is adapted to transport the seeds one by one by means of spoons (8) from a seed store to an outlet duct (10). To ensure a reliable, selective discharge of the seeds from the spoons (8), a compressed-air nozzle (13) is arranged to direct a flow of compressed air from a location opposite the inlet opening (11) of the outlet duct (10) towards each individual spoon (8) as it passes between the nozzle and the inlet opening (11).
    Type: Grant
    Filed: August 10, 1982
    Date of Patent: May 14, 1985
    Inventor: Alf H. Andersson
  • Machine for harvesting the foliage of row crops
    Patent number: 4271662
    Abstract: A machine for harvesting the overground foliage of a row crop growing in a field. The machine has a plurality of stripping wheels each for harvesting and disintegrating the foliage in one row of the crop. Each stripping wheel is arranged in a casing having an obliquely upwardly directed outlet, and produces an air stream for transporting the disintegrated foliage up through the outlet of the casing. In order to attain great cutting efficiency per time unit and keep the harvested material as clean as possible, the machine has a collecting channel connected at one end to an ejector pipe. The collecting channel extends above the stripping wheel casings which are arranged in a row one beside the other and whose outlets extend obliquely upwards in the same direction towards the ejector pipe and open at intervals one after the other into a lower portion of the collecting channel.
    Type: Grant
    Filed: September 14, 1979
    Date of Patent: June 9, 1981
    Assignee: Svenska Sockerfabriks AB
    Inventors: Alf H. Andersson, Nils B. Glifberg