Grapple
CA 2223802 C · Owner: Mccullough, Byron · Inventors: Mccullough, Byron
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A grapple including a central mounting member for attachment to a swivel mount of a boom and a pair of grapple jaws pivotally connected to and depending from the mounting member is modified by the addition of a pair of end, engagement plates for engaging and locating ends of the logs when grasped for lifting, the plates defining inwardly facing parallel surfaces arranged substantially at, right angles to the axes. The end engagement plates are mounted on a pair of horizontal slide beams for inward and outward movement and are attached by sleeves sliding on vertical rails of the plates for movement vertically relative to the, central mounting member.
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 December 5, 1997 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 5, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2019.
- 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.