| 摘要 |
The present invention is for the kind of power machines, engines, pumps or compressors which have two or more pistons which work against each other, preferably with a common combustion chamber or corresponding, in a stationary cylinder and where the power is transmitted to or from a rotating motion without an intermediate cam shaft. One such device has two parallel discs, both a stationary disc and a relatively thereto rotating disc in which there are stationary and rotating tracks. Balls (15-16) move in the tracks. Between the inside of the housing and the outer edges of the discs there is a comparatively narrow slit. Lubricant which is present inside the housing is affected by the rotating disc so that the lubricant is forced out towards the inside of the housing. In order to supply lubricant to the rotating balls and from these to the rotating and stationary tracks holes and channels have been made within or adjacent to the ballholders and the stationary tracks.
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