Company Filing History:
20 out of 540 
12 out of 91 
4 out of 170 
Years Active: 1990-2007
Title: Innovations and Contributions of Alan W Johnson
Introduction
Alan W Johnson, a prolific inventor based in Ames, IA, has made significant strides in the field of hydrostatic systems and hydraulic transmissions. With a remarkable portfolio comprising 39 patents, his innovative designs have greatly contributed to efficiency and functionality in various applications.
Latest Patents
Among his recent patents, two stand out for their ingenuity. The first is a **Charge/Auxiliary Circuit for Reducing Power Losses in Hydrostatic Systems**. This invention introduces a charge pump featuring independent outlets that cater to both charge and auxiliary circuits. The design employs a multiple roller vane pump, which allows for pressure requirements to be met effectively while minimizing load on the driveshaft. Additionally, the provision for a second independent inlet enhances the overall functionality of the pump.
Another notable patent is his **Hydrostatic Transmission**, which proposes a compact design with the hydraulic pump and motor mounted at right angles within a housing. This innovative arrangement positions the input shaft centrally between the motor and pump shafts, optimizing space and improving operational efficiency.
Career Highlights
Throughout his career, Alan W Johnson has been associated with reputable companies like Hydro-Gear Limited Partnership and Sauer GmbH. His work in these organizations has allowed him to hone his skills in hydraulic technologies and systems, leading to his inventive output.
Collaborations
Johnson has had the opportunity to work alongside talented individuals in the industry, including coworkers Ray M Hauser and Joseph E Louis. These collaborations have likely fostered an environment of shared ideas and collective innovation that complements Johnson's inventive spirit.
Conclusion
Alan W Johnson's contributions to the field of hydrostatics and hydraulic transmissions illustrate the impact of innovative thinking on technology. His extensive patent portfolio reflects a dedication to advancing engineering practices and the efficiency of systems, setting a benchmark for future inventors.