| 摘要 |
A trap-forming device with a hollow body comprises an upstream opening (12) located in the low part of the body and communicating with an upstream section of a fluid discharge pipe. Retaining means (20) define an overflow edge and co-operate with part of the upstream section to retain a quantity of fluid forming a fluid seal (70) at the end of the discharge phase, and a downstream opening (16) located in the lower part of the body and communicating with a downstream section of the discharge pipe. The retaining means (20) are movable between an active position and a retracted position, the device comprising means (28) for controllably shifting said retaining means between both positions. The invention also concerns a toilet bowl connected to such a trap-forming device. |
