| 摘要 |
PCT No. PCT/AU86/00022 Sec. 371 Date Sep. 18, 1986 Sec. 102(e) Date Sep. 18, 1986 PCT Filed Jan. 31, 1986 PCT Pub. No. WO86/04482 PCT Pub. Date Aug. 14, 1986.A suction harvester for aquatic plants and animals comprising a variable rate centrifugal pump capable of handling solids mounted on a vessel and connected to a manoeuvrable nozzle. The operator can control the placement of the nozzle and degree of suction applied by the pump to selectively harvest weed or algal mats, etc. from the bed of the water body. A location or manoeuvring system for the vessel in shallow water is also described, comprising spiked wheels driven by independent motors on the end of adjustable arms, the spikes engaging the bed of the water body for accurate location and propulsion with minimum disturbance. |
