This inventor holds 2 USPTO granted patents. Top assignee: International Business Machines Corporation. Active years: 1981-1983.
Company Filing History:
Years Active: 1981-1983
Title: The Innovations of David H. Rickenbach
Introduction
David H. Rickenbach is an accomplished inventor based in Chenango Forks, NY (US). He has made significant contributions to the field of electromagnetic technology, holding a total of 2 patents. His work has been instrumental in advancing the functionality and efficiency of print hammer systems.
Latest Patents
Rickenbach's latest patents include the "Electromagnetic Print Hammer Coil Assembly" and the "Electro-Magnetic Print Hammer." The electromagnetic print hammer coil assembly features a heat exchange system designed for an electromagnetically operated print hammer. This system provides both internal and external heat transfer for the operating windings. A non-magnetic metal bobbin facilitates conductive heat transfer from the interior of the operating winding to the magnetic core. Additionally, flat parallel plates of magnetic material are attached to the sides of the operating winding for external heat transfer and magnetic flux shielding. These plates may consist of multiple laminations with varying saturation and permeability characteristics.
The electro-magnetic print hammer comprises a single magnetic hammer element, where an impact mass is coupled to a pivoted armature by a flexible stem. The hammer-stem exhibits (N+1/2) periods of oscillation at its resonant frequency during the free flight time of the hammer mass. A permanent magnet with a strong magnetic force holds the hammer element fixed until the armature torque exceeds the magnet's holding force, causing the hammer mass to break loose with a snap action. Stop means are incorporated to prevent armature impacts with the operating pole piece of a stator core, while the visco-elasticity of the armature stop matches the rebound characteristics of the print medium when impacted by the hammer mass.
Career Highlights
David H. Rickenbach has had a notable career at International Business Machines Corporation (IBM). His innovative work in electromagnetic systems has contributed to the company's reputation for technological excellence.
Collaborations
Throughout his career, Rickenbach has collaborated with talented individuals such as Ho Chong Lee and Jack Louis Zable. These collaborations have further enriched his work and led to advancements in the field.
Conclusion
David H. Rickenbach's contributions to electromagnetic technology through his patents and collaborations highlight his role as a significant inventor in the industry. His work continues to influence advancements in print hammer systems and beyond.