Screen printing frame with prestressed force components

Patent name of the screen-printing frame with pre-stressed force-adding components Patent applicant Don Newman Principal Applicant Address Pennsylvania State inventor Don Newman; Thomas A. McKover; Michael P. A. Schonnard Application ( Patent No. 02829781.4 Date of Application 2002.08.21 Date of Certification Approved Announcement No. 1688442 Approved Announcement Day 2005.10.26 Instruction CD-ROM D0543 Main Classification No. B41F15/36 Class No. B41F15/36 Subsidiary Original Application No. Priority Abstract A support mesh The frame includes a plurality of elongated frame members (12, 14, 16, 18) and at least one elongate secondary member extending along at least a portion of one of the frame members. The secondary member includes a surface that contacts the frame member and is attached to the surface of the frame member along at least a portion of the secondary member. While the subsidiary parts are attached, differential strain is applied to the frame parts and the corresponding subsidiary parts at the contact surfaces to apply prestressing and arching to the frame parts. The sub-assembly can be welded to the frame member. According to another aspect of the invention, the tensioned frame includes rotatably supported rollers (22, 24, 26, 28) to tension the screens secured together by the connectors (38, 40). The roller includes a hollow cylinder forming an interior in which at least one elongate force member extends to provide pre-stressing or arching to the roller. Slaves 1. A frame for supporting a screen of a screen printing machine, the frame comprising: a plurality of elongated frame members joined together to form at least a portion of the frame, each frame member operatively supporting a wire An edge of the mesh; and at least one elongate secondary member extending along at least a portion of one of the frame members and having a surface in contact with a surface of the frame member, the secondary member being at least along the extended length of the secondary member; A portion is attached to the frame member, and differential strain is applied to the frame member and the corresponding sub-part at the contact surface while the sub-assembly is attached, such that one or both of the pre-stress and the arching pass through the sub-member. Apply to the frame member. International Application 2002-08-21 PCT/US2002/026527 International Publication 2004-03-04 WO2004/018208 English Entering Country Date Patent Agency Beijing Jinxin Cube Intellectual Property Agency Co., Ltd. Agency Address Nanxun