Hydraulic control arrangement for a pipe relining machine

Details Hydraulic control arrangement for a pipe relining machine Hydraulic control arrangement for a pipe relining machine

2005-05-31

2005-05-31

Shackelford, Heather (Department: 3673)

Hydraulic and earth engineering

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

Repair, replacement, or improvement

C405S184100, C405S150100

Reexamination Certificate

active

06899491

ABSTRACT:
An hydraulic control arrangement (66) in association with a pipe relining machine Includes fluid pressure supply and return lines (32, 33), a motor controller (80) to control a motor (67) and a radial position controller. The radial position controller supplies fluid under pressure to a radial positioning arrangement (46) to set diameter of a relined pipe. The radial position controller has a first normally closed valve (83) supplying fluid under pressure to the radial positioning arrangement (46) and a second normally open valve (84) allowing fluid to be withdrawn from the radial positioning arrangement (46). The arrangement (66) allows the pipe relining machine to be withdrawn in the event of a failure.

REFERENCES:
patent: 3565170 (1971-02-01), Urbanosky
patent: 4819721 (1989-04-01), Long, Jr.
patent: 4950356 (1990-08-01), Grace
patent: 4995929 (1991-02-01), Menzel
patent: RE34610 (1994-05-01), Miller et al.
patent: 5727904 (1998-03-01), Boyer
patent: 5778936 (1998-07-01), McAlpine
patent: WO 00/17564 (2002-03-01), None
Derwent Abstract Accession No. 2000-312121/27, JP 2000-094517 A (Sekisui Chem Ind Co Ltd) Apr. 4, 2000 Abstract and Figure.

Affiliated with

Also associated with

Rating

Hydraulic control arrangement for a pipe relining machine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic control arrangement for a pipe relining machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic control arrangement for a pipe relining machine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3460252