This inventor holds 2 USPTO granted patents. Top assignees: Durkopp Adler Aktiengellschaft, Durkoppwerke Gmbh. Active years: 1989-1999.
Company Filing History:
Years Active: 1989-1999
Title: Rolf Ellermann: Innovator in Sewing Machine Technology
Introduction
Rolf Ellermann is a notable inventor based in Bielefeld, Germany. He has made significant contributions to the field of sewing machine technology, holding 2 patents that showcase his innovative spirit and technical expertise.
Latest Patents
Ellermann's latest patents include a knee-operated switch for a working machine, particularly a sewing machine. This switch features a carrier supported by the machine and a profile extending at an angle. The profile contains first and second elongate, parallel electric contact strips that are normally separated. The design allows for deflection of the sheathing over at least one of the strips, enabling the contact strips to engage. Additionally, he has developed a servo device for a multineedle sewing machine. This device includes two needle bars, driving and stop devices, and various mechanisms for engaging and disengaging the needle bars. It also features a control system with electrical switches for precise operation.
Career Highlights
Throughout his career, Rolf Ellermann has worked with prominent companies in the sewing machine industry, including Durkopp Adler Aktiengesellschaft and Durkoppwerke GmbH. His experience in these organizations has allowed him to refine his skills and contribute to advancements in sewing technology.
Collaborations
Ellermann has collaborated with notable individuals in the industry, including Wilhelm Stapel and Gunter Droste. These partnerships have further enriched his work and innovation in sewing machine technology.
Conclusion
Rolf Ellermann's contributions to sewing machine technology through his patents and collaborations highlight his role as an influential inventor in the field. His innovative designs continue to impact the industry positively.