Concrete pulverizer with adjustable ripping element
CA 2266220 C · Owner: Nye, Mark · Inventors: Nye, Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A construction vehicle attachment in the form of a pulverizer-ripper unit that includes a pair of jaws confronting and closing on one another and an independent ripper-shank that has a replaceable ripper-tooth. Each jaw includes teeth that serve to engage and fracture concrete slabs. The pulverizer-ripper unit operates under power of any one or a combination of hydraulic pneumatic, electric, or mechanical powers. The teeth on each jaw are alternated at differing lengths and sizes. The ripper-shank is an elongated finger-like projection pivotably mounted on one of the jaws. The ripper-shank is significantly longer than either jaw and has a range of arcuate motion from a parked-position to a …
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 March 22, 1999 and granted April 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2021.
- 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.