The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2009
Filed:
Apr. 10, 2006
Ian Roger Bateman, Marino, 5049, South Australia, AU;
Craig Anthony Mayman, Bellevue Heights, AU;
Ian Roger Bateman, Marino, 5049, South Australia, AU;
Craig Anthony Mayman, Bellevue Heights, AU;
Other;
Abstract
An apparatus and method for lining an underground conduit is disclosed. The apparatuscomprises: an annular framehaving a crown portionand a base portion; a strip guide disposed around and supported by the annular frame, the guide arranged to guide a striparound a helical path; a pair of strip pinch rollers mounted to the frameat a position circumferentially about halfway between the crown portionand the base portion; a drive assembly mounted to the frame for driving the stripdownwards into the helical path in a winding direction so as to present an incoming first edge to an adjacent second edge of a wound convolution of the strip; a liquid remover mounted to the frame, the liquid remover arranged to prevent liquid that has adhered to and ascended with the second edge from descending down towards the incoming first edge; and an extrudermounted to the framefor extruding a molten bead of plastic onto the stripat a position just before said overlap.