Terrence A Dear

Title: Terrence A. Dear: Inventor of Noise-Reducing Fluid Systems

Introduction

Terrence A. Dear is an inventor associated with Elkton, Maryland, and E. I. du Pont de Nemours and Company. His work includes inventions designed to reduce noise generated by fluid flow. He is credited with 6 patents.

Latest Patents

Dear’s patent for an “Acoustically Inactive Corrugated Structure” describes a corrugated design with varied pitches intended to eliminate whistles and pure-tone noise caused by fluid moving across the structure. The design uses empirically selected pitch variations and rules for arranging them, including avoiding identical pitches in adjacent sections. Repeating the pattern can support manufacturing methods such as blow molding and injection molding. Potential applications include architectural, medical, automotive, and aircraft hoses.

His “Fluid Distribution System Having Noise Reduction Mechanism” patent addresses acoustic resonance in systems such as valves. It describes a housing chamber, inlet and outlet passages, and a plate containing multiple orifices. The orifices are designed to reduce the coupling between fluid flow and the chamber’s acoustic modes, helping prevent those modes and the orifices’ resonance frequencies from being excited.

Career Highlights

Dear’s listed inventions focus on practical approaches to managing noise in fluid-handling equipment. His work connects acoustic design with components and structures that can be incorporated into manufactured systems.

Collaborations

Dear’s listed coworkers include Karl U. Ingard and Allan B. Hughes. His company affiliation is E. I. du Pont de Nemours and Company.

Conclusion

Terrence A. Dear’s patents reflect an engineering focus on reducing flow-induced noise through carefully designed corrugations and fluid-distribution components.