Patent ID: 11906099
Assignee: PHOENIX ENVIRONMENTAL, INC.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A method of sealing an annular space in double-walled pipe including the following steps:
applying a first sealing piece to an inner pipe of double-walled pipe, wherein the first sealing piece covers a portion of the circumference of the inner pipe;
applying a second sealing piece to the inner pipe of double-walled pipe, wherein the second sealing piece covers the remainder of the circumference of the inner pipe, wherein at least one of the first sealing piece and the second sealing piece includes a thread disposed on at least one of a top surface and a front surface; and
attaching the first sealing piece to the second sealing piece forming a sealer;
wherein the sealer is disposed in the annular space located between the inner pipe and an outer pipe.