Patents by Inventor Pertti Harma

Pertti Harma 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: 4997167
    Abstract: The present invention relates to a dispensing equipment for adding inoculants to the stream of molten iron flowing from the spout of a tilting ladle. The dispensing equipment comprises a hopper (4) for the inoculant which hopper has an outlet opening (5) which extends through the wall of a first pipe 6. Means (9) is arranged for continuously and adjustably transportation of inoculant from the hopper (4) through the first pipe (6) and a second pipe 8 into the spout (1) of the ladle. The second pipe (8) is rotatably connected to the first pipe (6). A mounting frame (18) is suspended from the first pipe (6) by means of at least two bearings (16, 17), which bearings (16, 17) are rotatably arranged about the first pipe (6). The mounting frame (18) is firmly affixed to the second pipe (8), and a mounting arm (21) is fixed to the mounting frame (18), said mounting arm being intended to cooperate with a mounting bracket (3) on the ladle spout (1).
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: March 5, 1991
    Assignee: Elkem A/S
    Inventor: Pertti Harma