Morgan & Finnegan, L.L.P.
Scroll-type compressor
 A scroll-type compressor having a fixed scroll and a movable scroll. The fixed scroll includes a fixed base plate and a fixed volute wall extending from the fixed base plate. The movable scroll includes a movable base plate and a movable volute wall extending from the movable base plate. The movable volute wall has a distal end surface that faces the fixed base plate. A passage is formed through the movable volute wall and the movable base plate from the distal end surface. The passage reduces the area of the distal end surface of the movable volute wall, on which pressure is applied. This reduces the thrust load applied to the movable scroll and makes the compressor more reliable. 
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
F F
F04C F04C
inventional inventional
Naoya Yoshiyuki Kazuo Toshiro
Yokomachi Nakane Murakami Fujii