Kabushiki Kaisha Riken

Aisin Seiki Kabushiki Kaisha

Aisin Seiki Kabushika

Daisaku Kobayashi

Yutaka Momose

Tunesaku Itaba

Tomokimi Mizuno

Koichiro Kasahara

Tsunesaku Itaba

Tunesaku Itara

A sealing ring assembly comprises a synthetic resin sealing ring body having two opposing stepped cut surface portions including respective planer portions in sliding contact with each other, a synthetic resin gas sealing ring in contact with the inner circumferential surface of the sealing ring body, and a metal ring in contact with the inner circumferential surface of the gas sealing ring. To prevent the stepped cut surface portions from sticking to each other at the planar portions thereof, a metal film layer is provided on a planar portion of one of the stepped cut surface portions.

Synthetic resin sealing ring assembly with metal film layer

A rod seal device for a Stirling engine includes a piston rod connecting operating piston and a guide piston latter being served as a power take-off device, various seal members disposed between the two pistons and surrounding the outer peripheral portion of the rod. The seal device further includes a plurality of chambers disposed around the outer periphery of the rod between a working chamber of the engine and a working chamber of the power take-off for discharging any gas leaked therefrom or preventing any undesired mixture of the two different working gases.

Rod seal device for stirling engines

A rod seal device for a Stirling engine includes a high pressure oil chamber, an oil seal, and a low pressure oil chamber in series disposed between a compression chamber of the engine and a driving unit of power take-off. The oil seal includes an annular slit open to one end of the low pressure oil chamber for scraping oil from low pressure oil chamber to the high pressure oil chamber.

A stirling cycle engine including a working piston defining a working chamber, a crankshaft located in a crankchamber, a connecting rod connecting the working chamber with the crankshaft, the connecting rod being passed through intermediate members. A gas seal structure is provided in the intermediate members around the connecting rod, the gas seal structure including a first oil chamber and a second oil chamber, the second oil chamber being located closer to the crankchamber than the first oil chamber, a resilient sealing ring disposed between the first and second oil chambers and having an outer surface tapered toward the crankchamber to reduce diameter thereof, a spring for biasing the sealing ring toward the crankchamber so that the outer surface of the sealing ring is urged to an opposing surface formed in one of the intermediate members. The first oil chamber is subjected to a pressure proximity to a minimum pressure produced in the working chamber, whereas the second oil chamber to the atmospheric pressure.

Growing community of inventors

Kashiwazaki, Japan

Daisaku Kobayashi