Machine for welding roof membranes
AssigneeEngineered Construction Components
InventorColin R. R. Murphy
Life of this patent
Estimating the term…
Abstract
A device for welding portions of two overlapping roof membranes wherein a fastening means has been fastened to the lower of the two membranes and wherein there are portions of both overlapping membranes on both sides of the fastening means. The device includes a welding means which can apply welds to the membranes on both sides of the fastening means simultaneously. The welding means includes a nozzle having two outlets, with each outlet applying a heat sealing weld on one side of the fastening means. The device also includes a pair of weighted stitcher wheel assemblies which help to eliminate air pockets for underneath the roof membranes and to maintain the proper alignment of the overlapping membranes. The invention also includes a welding process using the above-mentioned device.
Claims9
A device for welding roof membranes, comprising:
- a chassis;
- means for movably supporting said chassis;
- welding means for heat welding two overlapping roof membranes to each other wherein a fastening means is located between said overlapping roof membranes, said welding means being attached to and positioned only on one side of said chassis, said welding means being capable of applying heat welds to said roof membranes simultaneously on both sides of and adjacent to a fastening means, and wherein said welding means includes a first directing means for directing heat to form a weld at one side of and adjacent to a fastening means, and a second directing means for directing heat to form a weld at another side of and adjacent to a fastening means;
- and means for applying pressure to welded overlapping roof membrane portions on opposite sides of and adjacent to a fastening means between the overlapping roof membrane portions, said means for applying pressure being attached to and positioned only on said one side of the chassis rearward of said welding means relative to the direction of movement of said device to provide thereby pressure to roof membrane portions only over a limited portion of the width of the chassis.
A device for welding overlapping roof membranes, comprising:
- a chassis;
- means for movably supporting said chassis;
- a welding means for applying welds to overlapping roof membranes wherein a fastening means is located between said overlapping roof membranes;
- and
- means for pressing said overlapping roof membranes against a roof after said welds are applied, said pressing means attached to said chassis and comprising:
- a bifurcated weld wheel located behind said welding means relative to the direction of movement of said device, said weld wheel having a groove dividing said weld wheel into first and second portions, whereby said weld wheel is capable of being positioned over a portion of an upper membrane of said overlapping membranes, with the first and second portions being positioned on opposite sides of a fastening means between overlapping membranes.
Dependencies are inferred from the claim text.