This inventor holds 2 USPTO granted patents. Top assignee: Kabushiki Kaisha Komatsu Seisakusho. Active years: 1984.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1984
Title: Toshikazu Yamamuro and Underground Pipe-Laying Innovations.
Introduction
Toshikazu Yamamuro is an inventor associated with Odawara, Japan, and Kabushiki Kaisha Komatsu Seisakusho. His work focuses on underground pipeline construction, including systems that excavate soil and transport it as slurry. He is credited with 2 patents.
Latest Patents
Yamamuro’s patents describe related approaches to laying pipelines underground while managing excavation and the removal of soil.
“Propulsion pipe laying system” describes a system in which a propulsion jack drives a pilot head fitted with a cutter into the ground. Water is supplied to a receiving chamber, where excavated earth and sand are mixed into slurry and discharged through a pipe. The patent also describes flow-rate or pressure monitoring to regulate a valve in the slurry circuit.
“Pipe laying method and apparatus” sets out a process that begins by laying a small-diameter pilot pipeline between departure and arrival pits. A cutter head attached to the pilot pipeline excavates soil, which is mixed with injected water and discharged as slurry to a tank in the arrival pit. A propulsion jack advances the cutter head, and a larger pipeline is connected behind it and laid through repeated excavation and propulsion.
Career Highlights
The described inventions address practical challenges in underground construction, including advancing excavation equipment, converting excavated material into slurry, and controlling its discharge. Together, they present methods for installing pipelines while removing soil through a managed slurry system.
Collaborations
Yamamuro’s listed coworkers include Masami Shiotsubo and Hiroshi Saito. The available information identifies his association with Kabushiki Kaisha Komatsu Seisakusho but does not specify the coworkers’ roles in the patents.
Conclusion
Toshikazu Yamamuro’s two patents concern propulsion-driven excavation and slurry handling for underground pipeline installation. They highlight coordinated approaches to advancing equipment, removing excavated material, and laying pipelines.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile