초록 ▼

An internal pipe arching apparatus has a self propelled unit for ground supporting an elongated longitudinal beam along its length. The unit is adapted to drive the beam into a pipe along its axis and lift the beam to a pipe arching position. The beam has an internal pipe arching means mounted there

An internal pipe arching apparatus has a self propelled unit for ground supporting an elongated longitudinal beam along its length. The unit is adapted to drive the beam into a pipe along its axis and lift the beam to a pipe arching position. The beam has an internal pipe arching means mounted thereto for forcible arching of a pipe when said beam is in the arching position. The mobile unit provides means for transporting and controlling the pipe expansion means.

대표청구항 ▼

A self-propelled pipe arching apparatus comprising, a self-propelled unit for ground supporting an elongated beam alongs its length, said self-propelled unit adapted to drive said beam into a ground supported pipe along its axis and raise said beam and said pipe into a pipe arching position, interna

A self-propelled pipe arching apparatus comprising, a self-propelled unit for ground supporting an elongated beam alongs its length, said self-propelled unit adapted to drive said beam into a ground supported pipe along its axis and raise said beam and said pipe into a pipe arching position, internal pipe arching means mounted entirely upon said beam for transport and control by said unit and adapted to forcibly arch the pipe when said beam is in said arching position, and said unit having means for transporting and controlling said pipe arching means.