초록 ▼

A pipe worm comprises radially inflatable toroids spaced along an axially inflatable tubular body. The worm inches through piping through sequential inflation and deflation of the toroids and tubular body. The worm includes a fluid supply source, pipe maintenance instrumentation and automatic, semia

A pipe worm comprises radially inflatable toroids spaced along an axially inflatable tubular body. The worm inches through piping through sequential inflation and deflation of the toroids and tubular body. The worm includes a fluid supply source, pipe maintenance instrumentation and automatic, semiautomatic or manual controls which are remote, on-board or trailered, as desired. The worm is inexpensive, reliable, capable of turning 90 degree corners, and further uniquely advantageous.

대표청구항 ▼

A pipe worm comprising: an axially expandable and retractable first body; and a pair of radially expandable and retractable second bodies mounted axially spaced along the first body; all the bodies being fluid inflatable to be expandable through fluid inflation and being fluid deflatable to be retra

A pipe worm comprising: an axially expandable and retractable first body; and a pair of radially expandable and retractable second bodies mounted axially spaced along the first body; all the bodies being fluid inflatable to be expandable through fluid inflation and being fluid deflatable to be retractable through fluid deflation; and further comprising means for controlling all the bodies for automatically causing the following sequentially ordered series of steps: expansion of one of the second bodies, retraction of the other of the second bodies, expansion of the first body, expansion of the other of the second bodies, retraction of the one of the second bodies, and retraction of the first body.