Patent ID: 8596605

Claim:
A floor through-passage molding apparatus adapted for a floor construction, comprising: a forming sleeve having a sleeve wall defining a hollow channel, a first opening and a second opening, said first opening and said second opening being communicated with each other via said hollow channel; a first covering plate assembly, disposed on the first opening of said forming sleeve; a second covering plate assembly, disposed on the second opening of said forming sleeve; and characterized in that said floor through-passage molding apparatus further comprises: said first covering plate assembly having a supporting rack and a shielding plate; and a plurality of retaining assemblies each extended through the hollow channel and having two opposite ends respectively retained within a plurality of corresponding retaining holes which are respectively formed on the supporting rack, the shielding plate and the second covering plate assembly, wherein positions of the corresponding retaining holes formed on said supporting rack jointly define a first plane, positions of the corresponding retaining holes formed on said shielding plate jointly define a second plane, and positions of the corresponding retaining holes formed on said second covering plate assembly jointly define a third plane so as to constitute a multi-level and multi-position retaining for said plurality of retaining assemblies.