Patent ID: 8607368

Claim:
A connecting apparatus for making a connection between a flushing port and a drainpipe, comprising: a trap-way piece forming a passage comprising an entrance configured to be in fluid communication with the flushing port; and an exit configured to be in fluid communication with the drainpipe; wherein the trap-way piece comprises a first curved pipe portion, a second curved portion, and a transverse low pipe portion provided between the first and second curved portions, the transverse low pipe portion having a central axis; wherein an upper part of an inner wall of the transverse low pipe portion extends with a different down angle than a lower part of the inner wall of the transverse low pipe portion, the upper and lower parts of the inner wall being disposed on opposing sides of the central axis of the transverse low pipe portion such that the upper part is provided above the lower part in a vertical direction when the connecting apparatus is connected between the flushing port and the drainpipe; and wherein the entrance comprises a flange containing a cavity connected and held together with the flushing port by a washer that is at least partially disposed inside the cavity and is compressed by an elongated fastener.