Oblon, Spivak, McClelland, Maier & Neustadt
Piston sealing ring having interlocking ends
 A sealing device for being mounted on a piston which is movably fitted within a cylinder, includes a sealing ring member having opposite end portions which are interlocked with each other along the circumferential direction of the sealing ring member, and an expanding device for expanding the radius of sealing ring member in the radial direction thereof. 
Aisin Seiki Kabushiki Kaisha
F F F F Y F
F02G F16J F05C F16J Y10S F16J
inventional inventional additional inventional additional inventional
Tetsumi Noboru Hiroyuki Yutaka
Watanabe Ohtani Katsuda Momose