Patent ID: 7739849
Filing Date: 2010-06-22
Classification: B44C,E04F,Y10T

Abstract:
1. A method for making a floor of mechanically locked rectangular floorboards joined in parallel rows with long sides and short sides, which floorboards along their four sides have pairs of opposing connectors for locking similar, adjoining floorboards both vertically and horizontally, the connectors of the floorboards being adapted so that two opposite joint edges on the long sides can be locked by inward angling, the method comprising: placing a second floorboard in a second row at an angle to a first floorboard in a first row and contacting the same, by an upper joint edge, with a joint edge of the first floorboard, locking a new floorboard in the second row to a short side of the second floorboard in the second row, so that the upper joint edge of the new floorboard contacts the joint edge of the first floorboard, laterally displacing both the new and the second floorboard parallel with respect to the long side of the first floorboard, the lateral displacement being longer than the length of the floorboards, and angling down the second and the new floorboard after lateral displacement wherein the connectors along-the short edges of the floorboard are adapted for locking together the floorboard and a similar floorboard only in a horizontal direction, perpendicular to a vertical plane extending between upper edges of the floorboards when the floorboards are locked together, such short edge connectors include: a first short edge having a strip extending from an underside of the floorboard and a locking member projecting upwardly from the strip, wherein the strip and the locking member extend beyond the vertical plane; and a second short edge having a groove on the underside arranged parallel to the second short edge, wherein no part of the second short edge extends beyond the vertical plane so as to enable the second short edge to be folded down vertically onto the strip of the first short edge so that the locking member fits into the underside groove to effect horizontal locking.