Patents by Inventor Steve Zelko

Steve Zelko 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: 6289802
    Abstract: A screen printing machine has article supports for articles to be printed, a displacement mechanism for displacing the article supports in succession around an endless path of travel and printing stations distributed along the path of travel and each having a printing head. The displacement mechanism has drive members engageable with the article supports for displacing the article supports, a reciprocating drive operable to reciprocate the drive members to and fro along the endless path to advance the articles in succession to the printing stations, and actuating devices for displacing the drive members into and out of engagement with the article supports. The article supports are vacuum tables communicating with a vacuum duct through a member sliding between flexible members extending along the duct.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: September 18, 2001
    Inventor: Steve Zelko
  • Patent number: 6089149
    Abstract: A screen printing machine has article supports for articles to be printed, a displacement mechanism for displacing the article supports in succession around an endless path of travel and printing stations distributed along the path of travel and each having a printing head. The displacement mechanism has drive members engageable with the article supports for displacing the article supports, a reciprocating drive operable to reciprocate the drive members to and fro along the endless path to advance the articles in succession to the printing stations, and actuating devices for displacing the drive members into and out of engagement with the article supports.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: July 18, 2000
    Inventor: Steve Zelko
  • Patent number: 5887519
    Abstract: A screen printing machine has a drive mechanism for moving printing platens along an endless horizontal path through successive printing stations and a printing screen carried by a printing head above the endless path at each printing station. A platen alignment mechanism at each printing station has locating members movable vertically into and out of engagement with freely rotatable rollers on the platen supports. A screen positioning mechanism at each printing station has screen holders engageable with opposite sides of screens, and the screen holders each comprise a screen support mounted for pivotation to and fro between a position beneath one of the screens. A lifting system at each printing station has supports positioned to support opposite ends of one of the printing heads and a support drive mechanism operable to simultaneously raise the supports.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: March 30, 1999
    Inventor: Steve Zelko
  • Patent number: 5626074
    Abstract: A screen printing machine has a bearing supporting a first arm structure for rotation about a vertical axis, the first arm structure comprising first arms equiangularly distributed about the vertical axis and extending radially outwardly of the vertical axis. The first arms each carry, at a free outer end thereof, a printing screen support platen. A second arm structure has second arms equiangularly distributed about the vertical axis and extending radially outwardly of the vertical axis, the second arms each carrying, at a free outer end thereof, a squeegee mechanism and a printing screen support for holding printing screen below the squeegee mechanism.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: May 6, 1997
    Inventor: Steve Zelko