EP0029343A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Lining cutter and cutting method
Assignee: BAM Nuttall Ltd
•
Filing: 1980-11-12
•
Granted: —
•
Expires: 2000-11-12
Abstract
Abstract in order to provide for the remote control and monitoring of a cutter support (48a) for pipe linings a body (11) is mounted, e.g. on skids (not shown). for transport through a lined pipe. A unit (32) is mounted on the body (11) so as to be adjustable longitudinally by a motor (44), angularly by a motor (37), and radially by a motor (56). The unit carries a motor (48) for the cutter (48a) and also a camera (49) trainable on the operative end of the cutter mounted on the support (48a) and also movable to a position (49a) where it is trained along the lined pipe. A second camera (41) is mounted in fixed position on the unit (32) substantially in the plane of the cutter.
Inventors
- 👤 Peter Naylor
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 22:47
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/26; B; B23; B23B; B23B41/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
85 words
A lining cutter characterised by comprising a carriage (11) adapted to be drawn through a lined pipe or conduit, a cutter (48) adapted for rotary and radial adjustment on the carriage (11) so as to cut through the lining at desired locations, a television camera (49) mounted on the carriage (11) so as to be trainable on the operative end of the cutter (48) to monitor the position and activity thereof, and remotely operable controls for positioning and operating the cutter (48) and camera (49).
Claim 2
Dependent Claim
85 words
A lining cutter characterised by comprising a carriage (11) adapted to be drawn through a lined pipe or conduit, a cutter (48) adapted for rotary and radial adjustment on the carriage (11) so as to cut through the lining at desired locations, a television camera (49) mounted on the carriage (11) so as to be trainable on the operative end of the cutter (48) to monitor the position and activity thereof, and remotely operable controls for positioning and operating the cutter (48) and camera (49).
Claim 3
Dependent Claim
24 words
A lining cutter according to claim 1, characterised in that the cutter (48) is mounted on a sliding block (32) to achieve radial adjustment.
Claim 4
Dependent Claim
24 words
A lining cutter according to claim 2, characterised in that the camera (49) is mounted solid with a slideway (50),for the sliding block (32).
Claim 5
Dependent Claim
36 words
A lining cutter according to claim 2 or 3, characterised in that the sliding block (32) is rotatable, together with a co-operating slideway (50), to achieve conjoint angular adjustment of the camera (49) and cutter (48).
Claim 6
Dependent Claim
23 words
A lining cutter according to claim 4, characterised in that the block (32) and slideway (50) are longitudinally adjustable on the carriage (11).
Claim 7
Dependent Claim
30 words
A lining cutter according to any of the preceding claims, characterised in that the carriage (11) is provided with skids (12) to assist in its passage along a lined pipe.
Claim 8
Dependent Claim
27 words
A lining cutter according to claim 7, characterised in that the carriage (11) is provided with a clamping pad (21) to hold it in a selected position.
Claim 9
Dependent Claim
50 words
A lining cutter according to any of the preceding claims, characterised in that the camera(49) is arranged for pivotal movement independently of the adjustment of the position of the cutter (48) to enable it to be trained along the pipe as well as on the operative end of the cutter.
Claim 10
Dependent Claim
44 words
A lining cutter according to any of the preceding claims, characterised in that a second camera (41) is mounted substantially in the plane of the cutter (48) and axially and angularly fixed in relation thereto to monitor the precise position of the cutter (45).
Claim 11
Dependent Claim
42 words
A lining cutter according to any of the preceding claims, characterised by including means for detecting the sound of the cutter striking on the harder material of the pipe or conduit and indicating the detection of such signal at a control position.
Claim 12
Independent Claim
94 words
A method of cutting a lining in a lined pipe or conduit, using a lining cutter according to any of the preceding claims, characterised in that the carriage (11) is drawn through the pipe or conduit to a position wherein the cutter (48) is roughly axially aligned with the desired position of the cut, adjusting the position of the cutter (48) axially and angularly to the desired position of commencement of cutting, advancing the cutter (48) radially into position to initiate cutting and adjusting the position of the cutter (48) as the cutting progresses.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.