| 摘要 |
1280327 Flexible chamber pumps AQUARIUMS Inc 13 Oct 1969 [18 Nov 1968] 50166/69 Heading F1A A pump for filtering aquarium water comprises a bellows 14 squeezable by hand to draw water from the aquarium via telescopic inlet pipe 12, 18 and flap valve 34, and to discharge the water back into the aquarium via flap valve 36 and cloth filter bag 60. Inlet pipe 12, 18 is adjusted for different water depths so that bag 60 is located in the water. A cap 26 is removable for venting the pump to drain its contents after use. |
