| 摘要 |
PCT No. PCT/NL89/00001 Sec. 371 Date Nov. 3, 1989 Sec. 102(e) Date Nov. 3, 1989 PCT Filed Jan. 6, 1989 PCT Pub. No. WO89/06303 PCT Pub. Date Jul. 13, 1989.Pump or motor comprising at least one cylinder housing being closed at both ends and a piston body received in said housing so that at both ends of said housing a working compartment is formed, the piston body being provided with a cavity shaped such that in it one piston rod can be received, one end of which is connected to the piston body and the other end to a crankshaft which pass through the piston body. |
