Rollup door with rollable door leaf

A rollup door comprising:

• a door leaf of increasing width from top to bottom, having a narrower part on the top and a wider part on the bottom, the door leaf having flexibility in the rolling direction;
• channels for guiding the door;
• two modules for rolling and unrolling the door leaf so that a number of leaf layers do not come in contact;
• the modules are situated on each side of the door, have the same center axes and are successive radially enlarged so that on opening and closing of the door, the narrower and wider parts of the leaf engage the smaller and larger parts respectively of the modules wherein each module has the outer shape of a continuous conical spiral.

A rollup door comprising:

• a door leaf of increasing width from top to bottom, having a narrower part on the top and a wider part on the bottom, the door leaf having flexibility in the rolling direction;
• channels for guiding the door;
• two modules for rolling and unrolling the door leaf so that a number of leaf layers do not come in contact;
• the modules are situated on each side of the door, have the same center axes and are successive radially enlarged so that on opening and closing of the door, the narrower and wider parts of the leaf engage the smaller and larger parts respectively of the modules
• wherein each module is a package of parallel disks;
• and
• wherein the largest radius in a disk is the same as the smallest radius in the next larger disk.

A rollup door comprising:

• a door leaf of increasing width from top to bottom, having a narrower part on the top and a wider part on the bottom, the door leaf having flexibility in the rolling direction;
• channels for guiding the door;
• two modules for rolling and unrolling the door leaf so that a number of leaf layers do not come in contact;
• the modules are situated on each side of the door, have the same center axes and are successive radially enlarged so that on opening and closing of the door, the narrower and wider parts of the leaf engage the smaller and larger parts respectively of the modules wherein the leaf is indirectly attached to the module via a hoisting belt.

A rollup door comprising:

• a door leaf of increasing width from top to bottom, having a narrower part on the top and a wider part on the bottom, the door leaf having flexibility in the rolling direction;
• channels for guiding the door;
• two modules for rolling and unrolling the door leaf so that a number of leaf layers do not come in contact;
• the modules are situated on each side of the door, have the same center axes and are successive radially enlarged so that on opening and closing of the door, the narrower and wider parts of the leaf engage the smaller and larger parts respectively of the modules wherein a door leaf edge is shaped to continuously fit a spiral contour of the module.

A rollup door comprising:

• a door leaf of increasing width from top to bottom, having a narrower part on the top and a wider part on the bottom, the door leaf having flexibility in the rolling direction;
• channels for guiding the door;
• two modules for rolling and unrolling the door leaf so that a number of leaf layers do not come in contact;
• the modules are situated on each side of the door, have the same center axes and are successive radially enlarged so that on opening and closing of the door, the narrower and wider parts of the leaf engage the smaller and larger parts respectively of the modules;
• wherein the door leaf is a series of connected substantially rigid slats giving a flexibility in the rolling direction;
• wherein the slats have end pieces inserted therein and wherein the end pieces are attached to a hoisting belt.

A method of assembling an overhead door comprising the steps of:

• providing a door leaf of increasing width from top to bottom, the door leaf having flexibility in the rolling direction;
• providing channels for guiding the door;
• and
• providing two conical modules for rolling and unrolling the door leaf there around so as to be in contact therewith and so that a number of leaf layers do not come in contact,
• the modules are situated on each side of the door, have the same center axes and are successive radially enlarged so that on opening and closing of the door, the narrower and wider parts of the leaf engage the smaller and larger parts respectively of the modules.