| 摘要 |
<p>PURPOSE: A fixed displacement type hydraulic pump is provided to increase pumping capacity without increased volume. CONSTITUTION: A fixed displacement type hydraulic pump comprises one or more tubes (10), a housing, and a pressing part (40). The tubes are made of a flexible material and are spirally arranged. Both ends of the tubes are opened and coupled to the housing. The pressing part is arranged in a space surrounded by the tubes to press outward the tubes.</p> |
