| 摘要 |
PURPOSE:To improve the compression faculty by installing a cylinder having a plastic-coated groove into which a roller and a vane are accommodated and in which the vane slidingly moves. CONSTITUTION:A roller 1 installed onto the eccentric part of a shaft 4 revolved by a motor revolves in contact with the inner periphery of a cylinder 3 and the top edge of a van 2. A plastic coating layer is installed onto the groove part 6 of the cylinder 3 into which the roller 1 and the vane 2 are accommodated. Polytetrafluoroethylene is used as plastic. Therefore, the sealing faculty at the contact point between the roller 1 and the cylinder 3 can be improved. |
