Device and method for removing irregularities in or enlarging an

Details Device and method for removing irregularities in or enlarging an Device and method for removing irregularities in or enlarging an

1984-12-10

1987-04-14

Taylor, Dennis L.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

138 97, 405156, F16L 5518, F16L 100

Patent

active

046574360

ABSTRACT:
A device for removing irregularities in or enlarging a buried duct comprises a cylindrical housing corresponding approximately in diameter to the required diameter of the duct, an expandable sheet comprising a plurality of tapered leaf members pivotally attached at their rear ends to the front of the housing, and remotely controllable drive means for moving the leaf members between contracted and expanded configurations. In operation, the apparatus is drawn through the duct with the leaf members in a contracted configuration in which they enter a portion of the duct of a diameter less than the required diameter. The drive means is operated to force the leaf members outwardly against the sides of the duct to expand the duct. The leaf members are then retracted and the apparatus is drawn forward. The apparatus is particularly intended for preparing damaged sewers prior to fitting an inner, lining pipe.

REFERENCES:
patent: 3181302 (1965-05-01), Lindsay
patent: 3602263 (1971-08-01), Bremner
patent: 4309128 (1982-01-01), Williams
patent: 4457647 (1984-07-01), Dusette et al.
patent: 4487052 (1984-12-01), Yarnell
patent: 4505302 (1985-03-01), Streatfield et al.

Affiliated with

Also associated with

Rating

Device and method for removing irregularities in or enlarging an does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device and method for removing irregularities in or enlarging an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and method for removing irregularities in or enlarging an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1781821