Patents by Inventor Ernst Lehmann

Ernst Lehmann 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: 5699735
    Abstract: A web-fed rotary press has an adjustable reel changer for accommodating printing material webs of different widths, a printing couple with printing cylinders, which can be engaged with one another to form printing stations, and an adjustable folder. The width of the reel changer and the positions of the printing cylinders and of components of the folder are adjusted automatically and in a mutually coordinated manner during the run of the press for changing over the production from a first printed product to a second printed product.
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: December 23, 1997
    Assignee: Maschinenfabrik WIFAG
    Inventors: Gotz Stein, Noel McEvoy, Ernst Lehmann, Marcello Tarchini
  • Patent number: 5085377
    Abstract: Process for feeding paper rolls for supplying web-fed rotary presses with paper rolls and for disposing of remnants from web-fed rotary presses, comprising a control system, which stores data on the location and the type of all paper rolls and disposal containers at any point in time. The system is designed to be so redundant such that partially manual or completely manual operation is possible in the case of failure of one or several components, as a result of which printing of the jeopardized publication is possible even in case of emergency, and the safety and ergonomic aspects are also not neglected even in an emergency situation.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: February 4, 1992
    Assignee: Maschinenfabrik WIFAG
    Inventors: Jean Rohrer, Ernst Lehmann
  • Patent number: 4376143
    Abstract: A method and apparatus are disclosed for the spray-coating of the interior of a hollow body, one region of which, e.g. a seam, must receive a heavier coating than the remainder of the surface to be sprayed. A single spray coating operation is performed, in which a relatively heavy spray jet is concentrated on the seam and a relatively thin cloud of coating material is used to coat the entire interior surface of the body. Preferably, a cloud of electrostatically charged coating material is formed by an atomizer fed by a feed conduit from which a certain amount of coating material is diverted to be formed into the relatively highly concentrated spray jet directed at the seam. The relatively high-velocity particles of material of the spray jet which is concentrated onto the seam and the relatively low-velocity particles of material of the coating cloud together produce on the seam a thinner layer of material than would normally suffice and which, nonetheless, adheres well.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: March 8, 1983
    Assignee: Gema AG Apparatebau
    Inventor: Ernst Lehmann
  • Patent number: 4343436
    Abstract: A method and apparatus are disclosed for the spraycoating of the interior of a hollow body, one region of which, e.g. a seam, must receive a heavier coating than the remainder of the surface to be sprayed. A single spray coating operation is performed, in which a relatively heavy spray jet is concentrated on the seam and a relatively thin cloud of coating material is used to coat the entire interior surface of the body. Preferably, a cloud of electrostatically charged coating material is formed by an atomizer fed by a feed conduit from which a certain amount of coating material is diverted to be formed into the relatively highly concentrated spray jet directed at the seam. The relatively high-velocity particles of material of the spray jet which is concentrated onto the seam and the relatively low-velocity particles of material of the coating cloud together produce on the seam a thinner layer of material than would normally suffice and which, nonetheless, adheres well.
    Type: Grant
    Filed: April 4, 1980
    Date of Patent: August 10, 1982
    Assignee: Gema AG Apparatebau
    Inventor: Ernst Lehmann