Company Filing History:
Years Active: 1999-2001
Title: John Richard Crigler: Innovator in Vent Flow and Retaining Wall Systems
Introduction
John Richard Crigler is a notable inventor based in Raleigh, NC (US). He has made significant contributions to the fields of vent flow apparatus and retaining wall systems. With a total of 3 patents to his name, Crigler's work showcases his innovative spirit and technical expertise.
Latest Patents
One of Crigler's latest patents is the "Vent flow apparatus and method." This invention provides a solution for venting and filling air pockets in conduit or duct-type apparatuses designed for the passage of material. The apparatus includes a hollow vent flow conduit, which is designed to facilitate the flow of material through a duct. The entry opening of the conduit is strategically placed at a location of greater cross-sectional area than the exit opening, enhancing its efficiency. This invention is particularly applicable in post-tensioning systems for concrete structures.
Another significant patent is the "Mechanically stabilized retaining wall system having adjustable." This invention features an upright soil retaining wall made of interlocking facing panels. It incorporates horizontal elongated wire mesh reinforcement panels that extend outwardly into the backfill material. The innovative design includes a three-way adjustable turnbuckle-type connector assembly, ensuring the verticality of the finished precast wall panels.
Career Highlights
Throughout his career, John Richard Crigler has worked with reputable companies such as VSL International Ltd and L.B. Foster Company. His experience in these organizations has contributed to his development as an inventor and innovator in his field.
Collaborations
Crigler has collaborated with notable individuals in his career, including Robert Duncan Lapsley and Donald Paul Kline. These collaborations have likely enriched his work and contributed to his innovative projects.
Conclusion
John Richard Crigler's contributions to vent flow apparatus and retaining wall systems highlight his innovative capabilities and technical knowledge. His patents reflect a commitment to solving complex engineering challenges.