Method and apparatus for tensioning ground engaging endless elastomericbelts
CA 1281756 C · Owner: Johnston, James Earl · Inventors: Alexander, Phillip Wayne; Johnston, James Earl; Howell, Keith Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
18-, Abstract of the Disclosure, Method and Apparatus For Tensioning Ground Engaging Endless Elastomeric Belts Method and apparatus for selectively, tensioning an endless inextensible elastomeric belt, entrained about a cooperating drive structure and idler structure having a respective axes of rotation. A roller frame joined to a vehicular main frame supports the idler structure and constrains movement thereof to a longitudinal recoil path. The drive and idler structures are biasingly separated by a compression spring which exerts biasing force thereon in opposite longitudinal directions through a drive strut and an idler strut, respectively. The idler strut is connected to the idler …
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 March 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 2008.
- 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.