Company Filing History:
Years Active: 1992-1999
Title: Innovations by Douglas Frederick Sweet
Introduction
Douglas Frederick Sweet is an innovative inventor based in Birmingham, Alabama, known for his contributions to engineering and technology. With a total of two patents to his name, Sweet has made significant strides in the field of pump technology and industrial applications.
Latest Patents
One of Sweet's notable patents is focused on a new design for mixed flow liquid ring pumps. This invention features a conically ported liquid ring pump with port structures that have cone angles ranging from 15 degrees to 75 degrees. These larger cone angles provide the fluid with advantageous components of both radial and axial velocity, enhancing the pump's efficiency. Additionally, the design allows for shorter axial port structures, which significantly reduces the unsupported length of the rotor shaft. These improvements enable the pump's length-to-diameter ratios to be economically increased while retaining all the desirable qualities of conically ported pumps.
His other patent involves innovative suction box covers for cleaning papermaking machine felts. This invention presents a suction box designed to aid in drying a felt web within a papermaking machine. The cover members make contact with the felt surface, with at least one leading portion being feathered or inclined away from the surface. This design reduces wear on the felt by allowing for a more gradual contact, ultimately enhancing the durability of the felts used in production.
Career Highlights
Douglas Frederick Sweet is associated with The Nash Engineering Company, a firm recognized for its expertise in fluid management solutions. Throughout his career, Sweet has focused on advancing technologies that improve the performance and efficiency of industrial processes.
Collaborations
In his professional journey, Sweet has collaborated with a variety of experts, including his coworker Harold K. Haavik. These collaborations have likely contributed to the innovative features present in his patents and inventions, showcasing the power of teamwork in advancing technology.
Conclusion
Douglas Frederick Sweet's contributions to engineering and his patents in the field of pump technology demonstrate his commitment to innovation. His work not only addresses current industrial challenges but also sets the groundwork for future advancements in fluid dynamics and machinery performance.