Company Filing History:
2 out of 151 
1 out of 495 
Years Active: 2007-2015
Title: Holger Siewert: Innovator in Industrial Roll Door Technology
Introduction
Holger Siewert is a notable inventor based in Rheda-Wiedenbrueck, Germany. He has made significant contributions to the field of industrial roll door technology, holding a total of 3 patents. His innovative designs focus on enhancing the functionality and efficiency of roll-up doors.
Latest Patents
One of his latest patents is a system for stabilizing the top lamella against wind load by using a linear chain. This mechanical link is designed to reduce or eliminate air infiltration between the topmost lamella of a roll-up door and the lintel of the doorway. The link is deployed in an unfolded configuration to support the topmost lamella against deflection caused by forces applied perpendicular to the plane of the door. Additionally, the link components can be folded into a storage position when the door is rolled up on a series of take-up discs. Another significant patent involves a high load operation industrial roll door. This design includes a flexible door curtain that can be wound around a top roll positioned above the door opening, along with a drive system. The roll door features a bottom beam fastened to the door curtain and a biasing spring that resists movement of the door when a load is applied. A positive stop is also included to prevent movement of the biasing means beyond a predetermined point.
Career Highlights
Throughout his career, Holger Siewert has worked with prominent companies in the industry. He has been associated with Assa Abloy Entrance Systems AB and Albany International Corporation. His work in these organizations has allowed him to develop and refine his innovative ideas in roll door technology.
Collaborations
Holger has collaborated with notable professionals in his field, including Mikael Bengtsson and Hakan Larsson. These collaborations have contributed to the advancement of his projects and innovations.
Conclusion
Holger Siewert is a distinguished inventor whose work in industrial roll door technology has led to several important patents. His innovative solutions continue to impact the industry positively.