초록 ▼

An adaptor (10) having a concrete cylindrical body (12) with an axial bore (14) having a directional twin seal (24) cast within the body (12) to project into the axial bore (14). The bore (14) has a maximum diameter at each end (16, 18) of the body (12) that decreases to a minimum diameter at the ce

An adaptor (10) having a concrete cylindrical body (12) with an axial bore (14) having a directional twin seal (24) cast within the body (12) to project into the axial bore (14). The bore (14) has a maximum diameter at each end (16, 18) of the body (12) that decreases to a minimum diameter at the center of the bore (14) where the seal (24) is positioned. The method of constructing the adaptor (10) includes the steps of placing a lower form (44) on a support member (40); placing a seal (54) on the lower form (44); placing an upper form (46) on the seal (54); and placing an outer cylinder (42) around the upper and lower forms (44,46) to create a space (58) into which liquid concrete is poured.

대표청구항 ▼

An adaptor for connecting pipe to a concrete structure, said adaptor manufactured according to the steps of: constructing an inner form assembly including a first form, a second form positioned adjacent said first form, and a seal located between said first and second forms wherein a portion of said

An adaptor for connecting pipe to a concrete structure, said adaptor manufactured according to the steps of: constructing an inner form assembly including a first form, a second form positioned adjacent said first form, and a seal located between said first and second forms wherein a portion of said seal is disposed between said first and second inner forms and a portion of seal projects outward from said forms; placing an outer cylinder generally concentrically around said inner form assembly, said outer cylinder being separated from said inner form assembly to define a space therebetween; pouring a liquid concrete mixture into said space and allowing said mixture to harden so as to form a concrete body with an axial bore defined by said first and second inner forms; and removing said outer cylinder and removing said inner forms so that said seal is partially embedded in said concrete body and at least partially extends into said axial bore.