Location History:
- Annaka, JP (1997 - 1998)
- Gunma Prefecture, JP (2002)
Company Filing History:
Years Active: 1997-2002
Title: Keizo Shimizu: Innovator in Mower Technology
Introduction
Keizo Shimizu is a notable inventor based in Annaka, Japan, recognized for his contributions to mower technology. With a total of four patents to his name, Shimizu has developed innovative solutions that enhance the functionality and efficiency of lawn care equipment.
Latest Patents
One of Shimizu's latest inventions is a rotary cutter for mowers. This rotary cutter is designed to limit the reeling out of a cord when the free end is worn out, ensuring that debris such as pebbles is not scattered during operation. The design allows for easy disengagement without separating component parts, facilitating reassembly. The rotary cutter features a cord for mowing grass, a reel for containing the cord, and a cover that protects the case containing the reel. Additionally, a plunger is included, which is movable in an axial direction to intermittently rotate the reel. The mechanism employs a ratchet held in place by an urging element, which is activated by centrifugal force during high-speed rotation.
Another significant patent is a recoil starter for internal combustion engines. This starter boasts a simple and compact structure with fewer parts, making it cost-effective to manufacture. The design includes a shaft with a rotatable reel and a rope wound around it, which is drawn out to start the engine. A frictional resistance means is integrated into the shaft, allowing for a reduction in overall size and manufacturing costs.
Career Highlights
Shimizu is currently employed at Starting Industrial Co., Ltd., where he continues to innovate in the field of mower technology. His work has significantly impacted the efficiency and usability of lawn care equipment.
Collaborations
Shimizu collaborates with talented coworkers, including Shuhei Tsunoda and Mitsuo Osakabe, who contribute to the development of innovative products in their field.
Conclusion
Keizo Shimizu's inventive spirit and dedication to improving mower technology have led to significant advancements in the industry. His patents reflect a commitment to enhancing user experience and operational efficiency in lawn care equipment.