Franz Rappl

Title: Franz Rappl: Innovator in Electromagnetic Relay Technology

Introduction

Franz Rappl is a notable inventor based in Feldkirchen Westerham, Germany. He has made significant contributions to the field of electromagnetic relay technology, holding two patents that showcase his innovative spirit and technical expertise.

Latest Patents

Rappl's latest patents include an electromagnetic power relay with an actuation slide. This relay features a moveable contact element that is actuated through armature movement transmitted via a slide. The switching mechanism is activated by the application of torsional forces to the movable contact element. These forces are generated by the slide pushing the leaf spring contact element eccentrically, resulting in twisting during the switching event. The design allows for a lower spring modulus, leading to a smaller magnetic system and overall relay size while ensuring that the spring force curve matches the magnetic system force curve.

Another significant patent is the spring contact assembly. This assembly consists of an elongated spring member with a contact adjacent to its free end. The member is mounted at an inner end in a slot opening in an insulated mounting body. The contact is urged against a fixed contact carried by a stiff member mounted in the body. The inner end of the spring is fixed to a rigid spring carrier plate, which serves as a fulcrum point for the spring, enhancing its functionality.

Career Highlights

Franz Rappl is associated with Siemens Aktiengesellschaft, a leading global technology company. His work at Siemens has allowed him to develop and refine his innovative ideas in the field of electromagnetic technology.

Collaborations

Rappl has collaborated with notable colleagues, including Helmut Schedele and Martin Aidn. These partnerships have contributed to the advancement of his projects and the successful development of his patents.

Conclusion

Franz Rappl's contributions to electromagnetic relay technology through his patents reflect his dedication to innovation and engineering excellence. His work continues to influence the industry and inspire future advancements in technology.