Patents by Inventor Lothar Stein

Lothar Stein 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: 6546863
    Abstract: A printing-material sheet processing machine includes at least one processing unit with an impression cylinder and a tool-carrying cylinder bringable into contact with the impression cylinder, the tool-carrying cylinder having at least one tool selected from the group of tools consisting of respective deforming and separating tools for the printing-material sheets, the processing unit also having a circumferential-register adjusting device and a lateral-register adjusting device, which are assigned to the tool-carrying cylinder for adjusting the register thereof, and having a diagonal-register adjusting device assigned to a sheet transport cylinder for adjusting the register thereof, the sheet transport cylinder being disposed for transferring the printing-material sheets to the impression cylinder.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: April 15, 2003
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Frank Schaum, Lothar Stein
  • Publication number: 20010045167
    Abstract: A printing-material sheet processing machine includes at least one processing unit with an impression cylinder and a tool-carrying cylinder bringable into contact with the impression cylinder, the tool-carrying cylinder having at least one tool selected from the group of tools consisting of respective deforming and separating tools for the printing-material sheets, the processing unit also having a circumferential-register adjusting device and a lateral-register adjusting device, which are assigned to the tool-carrying cylinder for adjusting the register thereof, and having a diagonal-register adjusting device assigned to a sheet transport cylinder for adjusting the register thereof, the sheet transport cylinder being disposed for transferring the printing-material sheets to the impression cylinder.
    Type: Application
    Filed: May 17, 2001
    Publication date: November 29, 2001
    Inventors: Frank Schaum, Lothar Stein
  • Patent number: 5983795
    Abstract: A sheet-fed rotary printing press having at least one printing unit with an impression cylinder includes a transfer cylinder assigned to the impression cylinder for onwardly transporting sheets printed thereby, the transfer cylinder having at least one gripper system and being formed with a cylinder-jacket surface assigned thereto, the surface being rigid and a full surface, and at least one unit of a varnishing, a numbering and an imprinting unit assigned to the transfer cylinder.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: November 16, 1999
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Lothar Stein, Frank Schaum
  • Patent number: 5452660
    Abstract: A rotary printing press has a washing mechanism for washing ink residue off of the roller arrangement therein. The washing mechanism has a washing medium applicator and an arrangement of rollers which comprises a roller that can be positioned to split the flow of washing medium into two paths to direct the flow in essentially the shortest route possible to the distribution rollers located at the plate cylinder. The washing mechanism can also have a doctor-blade device for scraping the soiled washing medium from the rollers, and the doctor-blade device can be activated by the same mechanism which activates the positioning of the roller which splits the flow of washing medium.
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: September 26, 1995
    Assignee: Heidelberger Druckmaschinen Aktiengesellschaft
    Inventor: Lothar Stein
  • Patent number: 5408928
    Abstract: An inking unit for rotary printing machines comprising driven distributor rollers, inking-unit rollers and plate-inking rollers which are mounted so as to be disengageable from a plate cylinder such that, when adjusting an inking-unit roller, the contact pressure is maintained at a constant level and the adjustment itself can be largely remote-controlled.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: April 25, 1995
    Assignee: Heidelberger Druckmaschinen Aktiengesellschaft
    Inventors: Rudi Junghans, Lothar Stein
  • Patent number: 5403099
    Abstract: Roller bearing for a roller in a printing unit of a printing machine having a receptacle for a tang formed on an end of a roller, and a hold-down device movable for respectively locking and releasing the tang on the end of the roller, includes a device for fastening, with spring loading, the receptacle and the hold-down device radially to one another with the roller tang formlockingly received therebetween, the fastening device having a longitudinal axis, and the hold-down device being swivelable, with a force overcoming the spring loading, about the longitudinal axis of the fastening device and away from the roller tang.
    Type: Grant
    Filed: December 23, 1993
    Date of Patent: April 4, 1995
    Assignee: Heidelberger Druckmaschinen AG
    Inventor: Lothar Stein
  • Patent number: 5375519
    Abstract: A device for receiving therein a prestressed roller journal, the device being provided in a printing unit of a rotary printing press, includes a screw-in element having a prestressed pressure element movably guided therein for adjusting to a contact width of a roller, a bearing member carrying the screw-in element and being adjustable between a vertical installation position thereof and at least one installation position deviating from the vertical installation position, the bearing member being formed with a pair of guide cams disposed opposite one another for automatically orienting the roller in the vertical installation position, one of the guide cams of the pair thereof being disposed so as to carry the weight of the roller in the at least one installation position of the bearing member deviating from the vertical installation position.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: December 27, 1994
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Rudi Junghans, Lothar Stein
  • Patent number: 5127424
    Abstract: With a cleaning device that uses high-voltage discharges in liquids, it is possible to safely clean even clusters of precision castings if a tubular processing chamber serves as shock wave reflector and the position of the component and of the electrode are variable. Casting elements encrusted both with thin ceramic layers and with more ductile deposits are safely cleaned after they are lowered into the tubular chamber with sealable apertures on both sides, and after shock waves have been generated via the electrode positioned in the chamber. The tubular configuration of the chamber, which is preferably positioned endwise, makes it possible in particular to utilize the reflection waves to clean the individual components. By way of a hoist, the component configured as a cluster as well as any other configured component is passed by the electrode, turned, and if necessary swivelled in order to thus ensure a uniform and rapid cleaning.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: July 7, 1992
    Assignee: Reinhold Thewes
    Inventors: Lothar Stein, Rheinold Thewes