Automated sewer cleaning rodding machine
CA 1300824 C · Owner: Prange, Charles J. · Inventors: Prange, Charles J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automatic sewer rodding machine having a carriage mounted storage reel rotatably driven by a hydraulic drive. A rod feed system also mounted on the carriage has a hydraulic drive to feed a sewer cleaning rod out and back. An automatic rod feed reversing system senses resistance to rod movement and automatically reverses rod travel for a predetermined time period. After the period times out rod travel is restored to normal operation. The automatic reversing system continuously cycles the sewer cleaning rod into an obstruction in a sewer line until it is cleared. Switch selection of normal or reverse automatic rod feed or entirely manual operation is provided.
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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- 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.