This inventor holds 3 USPTO granted patents, plus 1 CIPO patent. Top assignees: Iowa State University Research Foundation Inc., White Consolidated Industries, Inc.. Active years: 1987-2000.
Location History:
- Ames,, IA (US) (1998)
- Ames, IA (US) (1987 - 2000)
Company Filing History:
3 out of 1,423 
2 out of 465 Years Active: 1987-2000
Title: David K Holger: Innovator in Central Vacuum Technology
Introduction
David K Holger is a notable inventor based in Ames, Iowa. He has made significant contributions to the field of central vacuum technology, holding a total of 3 patents. His innovative designs focus on enhancing the efficiency and noise reduction of central vacuum systems.
Latest Patents
Among his latest patents is the "Central Vacuum Cleaner Muffler." This invention features a muffler comprising an elongated pipe with a reduced diameter inlet and outlet, along with a noise-reducing foam liner. The foam liner is designed to provide a smooth inner surface that aligns with the inlet and outlet, utilizing a combustion modified polyether polyurethane foam tube for optimal sound dampening.
Another significant patent is the "Central Vacuum with Acoustical Damping." This invention includes a central vacuum unit equipped with an acoustic damping system. The system features a canister with a vacuum motor that emits noise during operation. The design incorporates an acoustic damping tunnel and canopy, which work together to minimize noise emitted from the unit. The exhaust port seal further enhances noise reduction, ensuring a quieter operation.
Career Highlights
David K Holger has worked with reputable organizations, including the Iowa State University Research Foundation and White Consolidated Industries. His experience in these institutions has contributed to his expertise in developing innovative vacuum technologies.
Collaborations
Throughout his career, David has collaborated with notable colleagues such as Stephen P Rittmueller and Douglas E Johnson. These partnerships have fostered a creative environment that has led to the development of his impactful inventions.
Conclusion
David K Holger's contributions to central vacuum technology demonstrate his commitment to innovation and improvement in everyday appliances. His patents reflect a deep understanding of acoustics and functionality, making him a significant figure in the field.