Oblon, McClelland, Maier & Neustadt, L.L.P.
Fluid pressure apparatus
In a fluid pressure apparatus, a packing is constituted from an annular seal member made of an elastic rubber material, and support rings made of a material possessing low friction, which are mounted on an outer circumference of the seal member. The seal member includes, on an outer circumference thereof, a sealing projection, shoulder portions formed on both sides of the sealing projection, and concave grooves interposed between the shoulder portions and the sealing projection. The support rings include support surfaces on outer circumferences thereof, and engagement projections on inner circumferences thereof, such that by engagement of the projections in the concave grooves, the support rings are mounted on the seal member so as to surround outer circumferences of the shoulder portions.
SMC KABUSHIKI KAISHA
F F F
F16J F15B F16J
inventional inventional inventional
Masahiro Yasunaga
Okuma Suzuki