Location History:
- Kawajima, JP (1981)
- Saitama, JP (1986)
Company Filing History:
Years Active: 1981-1986
Title: Masao Hiruma: Innovator in Vibration Absorption and Shock Absorption Technologies
Introduction
Masao Hiruma is a notable inventor based in Kawajima, Japan. He has made significant contributions to the fields of vibration absorption and shock absorption technologies. With a total of 2 patents to his name, Hiruma's work has had a considerable impact on engineering and automotive design.
Latest Patents
Hiruma's latest patents include a torsional vibration absorber device and a hydraulic shock absorber. The torsional vibration absorber device is designed to be positioned between two relatively rotatable members. It features a coupling member with a projection that engages a camming surface on one of the members, which is slanted circumferentially with respect to the axial direction. A wet type friction clutch is interposed between the coupling member and the other rotary member, ensuring effective engagement upon axial movement of the coupling member. Additionally, a hydraulic oil chamber connected to the atmosphere via an orifice decreases in volume upon axial movement, enhancing the device's functionality.
The hydraulic shock absorber, on the other hand, consists of a first cylinder closed at the top, with a piston rod extending axially through it. This design includes a second cylinder that is telescopically received within the first cylinder, featuring radial partition walls that define oil paths. A ring-like elastic member functions as a check valve for the oil paths, ensuring optimal performance even when the oil path around the piston rod is closed.
Career Highlights
Masao Hiruma is currently associated with Honda Giken Kogyo Kabushiki Kaisha, a leading automotive manufacturer. His work at Honda has allowed him to innovate and refine technologies that enhance vehicle performance and safety.
Collaborations
Hiruma has collaborated with notable colleagues such as Hiroshi Nakayama and Michio Suzuki. Their combined expertise has contributed to the advancement of various engineering projects within the company.
Conclusion
Masao Hiruma's contributions to vibration and shock absorption technologies exemplify his innovative spirit and dedication to engineering excellence. His patents reflect a commitment to improving automotive performance and safety, making him a significant figure in his field.