Dipper assembly including a closure mechanism
CA 2548874 C · Owner: Caterpillar Global Mining Llc · Inventors: Gilmore, Carl D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dipper assembly includes a dipper, a dipper door and a closure mechanism. The dipper door is pivotally linked relative to the dipper and has a closed position in which the dipper door closes the open bottom. The closure mechanism has a lock position and an unlock position and is fixed relative to the dipper and linked to the dipper door. In the lock position the closure mechanism holds the dipper door in the closed position. In the unlock position the closure mechanism allows the dipper door to swing away from the closed position.
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 May 30, 2006 and granted January 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.