Patent ID: 9255430
Filing Date: 2016-02-09
CPC Classification: E05D,E05F,E05Y,E06B

Claim Text:
1. A folding door comprising: two or more intrinsically rigid folding shutter elements, each comprising alternating noncollapsing and collapsing door element edges, at least one guide means which can be raised and lowered on or in one or more guide rails to thereby raise and lower a permanently guide rail-adjacent, noncollapsing door element edge of one of the two or more shutter elements, wherein the permanently guide rail-adjacent, noncollapsing door element edge includes at least one pivot point, a displacement means which is active between the at least one pivot point and the at least one guide means to thereby change a distance between the at least one pivot point and the at least one guide means at a beginning of an opening of the folding door, as well as at an end of a closing of the folding door; wherein: the at least one guide means comprises at least two guide elements, during the opening of the door, the at least two guide elements first move towards each other to a minimum guide element spacing between the at least two guide elements thereby performing a first door actuation accompanying the opening of the door by increasing the distance between the at least one pivot point and the one or more guide rails, the at least two guide elements moving together at the minimum guide element spacing for the completion of the opening of the door, and during the closing of the door, the at least two guide elements first move together at the minimum guide element spacing and then move apart from each other and perform a second door actuation accompanying the end of the closing of the door by decreasing the distance between the at least one pivot point and the one or more guide rails.