Modular skimmer for subgrade preparation including provision for crossflow of material
CA 1311355 C · Owner: Probst, Greif- Und Fordertechnik Gmbh · Inventors: Probst, Martin; Schaffarzyk, Herbert; Schaffarzyk, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A skimmer for subgrade preparation with a skimming beam which can be towed over the subgrade, and which has a cambered portion for receiving sand, gravel or similar material during operation. The cambered portion opens towards the unfinished subgrade. During operation the skimming beam can be towed by means of chains ropes, or similar connecting means from a mobile appliance. The invention is characterized in that the cambered portion is shaped as a skip-like space which is designed to receive excess sand or gravel that is pared off during operation. The space is bounded by a lower wall sidewalls, and a rear wall. An attachment is provided on the skimming beam for the purpose of attaching …
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 December 15, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 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.