Tarp cover system with lever-operated locking and brake means
CA 2073714 C · Owner: Gothier, Richard J. · Inventors: Gothier, Richard J.; Cohrs, Richard B.; Stadtfeld, Kerry W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tarp cover system includes a pawl (44) and ratchet (26) mechanism for locking a tarp cover (6) in a rolled-up truck-body-uncovered condition and a, lever arrangement (32,38) that is initially squeezed with one hand by the operator to release the pawl from the ratchet to unlock the rolled up cover and is, subsequently pivoted by the same hand to brake (28,34) the unwinding of the cover as it is spring-biased toward the truck-body-covered condition. To re-cover the truck body, a crank shaft (24) is rotated to rotate the roll in the cover-winding direction against the biasing force of the spring, the ratchet mechanism preventing uncontrolled unwinding of the cover.
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
- Filed July 13, 1992 and granted September 16, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 2014.
- 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.