Company Filing History:
Years Active: 1995-2013
Title: Innovations of Hiroyuki Shiraiwa
Introduction
Hiroyuki Shiraiwa is a prominent inventor based in Hitachi, Japan. He has made significant contributions to the field of engineering, particularly in the development of advanced machinery and equipment. With a total of 9 patents to his name, Shiraiwa's work has had a substantial impact on various industries.
Latest Patents
One of his latest patents is a bearing device for gas turbine power generation equipment. This innovative bearing device provides damping vibration of a shaft while lubricating and cooling the bearing main body. The design includes sleeves on the outer circumference of the bearing main bodies, which are held by bearing housings via O-rings, forming an annular clearance passage. The bearing housing features a feed-water hole that communicates with the clearance passage to supply water, while the sleeve has a lead water hole and a discharge hole for effective water management.
Another notable patent is for a rolling mill equipped with an on-line roll grinding system and grinding wheel. This system includes a grinding head unit composed of a grinding wheel, a drive device for rotation, and a movement device for adjustment. The design allows for the absorption of vibration energy through a plain wheel integral with the abrasive layer, enabling precise grinding of the mill roll into a target profile without causing chattering marks.
Career Highlights
Hiroyuki Shiraiwa is currently employed at Hitachi, Ltd., where he continues to innovate and develop cutting-edge technologies. His work has been instrumental in enhancing the efficiency and performance of various industrial applications.
Collaborations
Shiraiwa has collaborated with notable colleagues, including Shigeru Mori and Shigetoshi Kondoh. Their combined expertise has contributed to the successful development of several innovative projects.
Conclusion
Hiroyuki Shiraiwa's contributions to engineering and technology through his patents demonstrate his commitment to innovation. His work continues to influence the industry, paving the way for future advancements.