Apparatus for the repair of pipes
CA 1270775 C · Owner: Lona, Norbert · Inventors: Lona, Norbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A carriage (1) is guided coaxially to the axis (11) of a pipe (9) to be repaired by two sets (2 3) or sprung rollers (4, 5). The carriage supports a drive motor (28) on the drive shaft, (29, 30) of which is fixed a distribution means in the form of rollers (41). Coating material, for example a pressure setting plastic, is applied via a supply pipe (45) to the underside of the pipe wall (8) and is distributed by the turning rollers (41) over the circumference. In this way damaged sewer pipes can be correctly coated with small effort.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 26, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 26, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.