发明名称 Method of making a unitary bowl, waterway, and trap for a toilet
摘要 Disclosed are an integral plastic bowl, waterway and trap for a toilet and the method of making the product. The bowl is concave and leads into a trap which may be interconnected with a standard closet flange. The waterway is vertically aligned with the trap and slopes downwardly from an inlet to an outlet, which is preferably at a position near the bottom interior of the bowl and which also preferably includes a wall surface in overlying alignment with at least a portion of the downwardly sloping waterway portion. During flushing, water from a reservoir flows down the waterway, against the outlet wall surface causing a vortex in the bowl, and then out of the bowl into the trap. In the method of making the product, a plastic parison is positioned between the sections of a blow mold. Next, the mold sections are closed, pinching portions of the parison shut to partially form the trap and waterway and enclosing another parison portion in a bulbous mold cavity. Blow fluid under pressure is injected into the interior of the parison to form a blown article which is then removed from the mold and trimmed to form the final product.
申请公布号 US4246227(A) 申请公布日期 1981.01.20
申请号 US19790015040 申请日期 1979.02.26
申请人 TRAYCO, INC. 发明人 CROSBY, SAMUEL C.;WHITNEY, THOMAS M.;PRICE, WILLIAM F.
分类号 B29C49/00;B29C49/04;E03D11/02;(IPC1-7):B29C17/07;B29C17/10 主分类号 B29C49/00
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