Location History:
- Memphis, TX (US) (1995)
- Memphis, TN (US) (1992 - 1999)
Company Filing History:
2 out of 50 
1 out of 4 
2 out of 832,961 Years Active: 1992-1999
Title: Joseph A. Alexander: Innovator in Liner Eversion Technology
Introduction
Joseph A. Alexander is a notable inventor based in Memphis, TN (US). He has made significant contributions to the field of liner eversion technology, holding a total of 5 patents. His innovative approaches have paved the way for advancements in sewer maintenance and repair.
Latest Patents
Among his latest patents is a method for everting a liner using a compact apparatus. This apparatus utilizes fluid pressure to evert a liner after it has been aligned with the conduit to be lined. The design includes a sphincter valve aligned with the conduit and an eversion pressure chamber that reduces the length of the apparatus, allowing it to be positioned in a sewer manhole. A downtube is also included, extending to the top of the manhole, facilitating the installation of the liner. The apparatus is strategically placed in the entrance manhole, with the sphincter valve aligned with the sewer pipe's axis. The liner is inserted into the downtube, turned to align with the sphincter valve and conduit, and fluid pressure is applied to engage the flattened liner, which is then everted by fluid pressure as it enters the sewer pipe.
Career Highlights
Joseph has worked with various companies throughout his career, including Insituform (Netherlands) B.V. His work has been instrumental in developing efficient methods for sewer rehabilitation, showcasing his expertise in the field.
Collaborations
He has collaborated with notable coworkers such as F. Thomas Driver and Lloyd G. Buchanan, contributing to the advancement of liner eversion technology.
Conclusion
Joseph A. Alexander's innovative work in liner eversion technology has significantly impacted the industry. His patents reflect a commitment to improving sewer maintenance methods, ensuring more efficient and effective solutions.