Roll up tarp assembly
CA 1283147 C · Owner: Johnson, Roy R. · Inventors: Johnson, Roy R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roll up tarp assembly for a truck having a box with an open top. The assembly includes a tarp support system which is mounted on the open top of the box and a sheet which is located on the support system so that the top of the box is covered. A hollow tube extending longitudinally across the top of the box is provided such that the hollow tube is located substantially centrally with respect to the sides of the box. The hollow tube is placed on top of the sheet and affixed along its length to the sheet. A biasing device is provided within the hollow tube such that the hollow tube is urged to rotate towards a predetermined side of the box and thus roll up the sheet. A locking element …
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 April 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 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.