This inventor holds 4 USPTO granted patents. Top assignees: General Electric Company, Maxtec, Inc., Other. Active years: 1994-2002.
Company Filing History:
2 out of 52,338 
1 out of 6 
1 out of 834,307 Years Active: 1994-2002
Title: The Innovative Contributions of Michael C McDonald
Introduction
Michael C McDonald is a notable inventor based in Sumner, WA (US), recognized for his significant contributions to technology with a total of four patents. His work primarily focuses on advancements in waterjet technology and cleaning systems, showcasing his expertise in engineering and innovation.
Latest Patents
One of McDonald's latest patents is the "Self-aligning, spring-disk waterjet assembly." This invention features a spring disk with a concentric through bore and a concentric counter bore of specific depth, designed to hold an orifice against a lapped surface of a nozzle cap in a waterjet assembly. The dimensions are meticulously chosen to provide adequate restraint without the need to force the orifice onto the spring disk. When the orifice, spring disk, and retaining cap are assembled, tightening the cap on the inlet nozzle forces the spring disk to the cap surface, securely holding and centrally aligning the orifice within the assembly.
Another significant patent is the "In situ inlet mixer cleaning system." This apparatus is designed for cleaning inlet mixers while they remain in their operating position within a nuclear reactor. A cleaning tool is inserted by remote control into the inlet mixer via a secondary inlet opening. After insertion, the internal surfaces of the inlet mixer are cleaned using a waterjet created from an ultra-high-pressure source. The cleaning head, equipped with a nozzle, scans the cleaning waterjet across the surface to