Cutting toolholder retention system
CA 2277310 A1 · Owner: Massa, Ted R. · Inventors: Vankirk, John S.; Massa, Ted R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An excavation cutting toolholder retention system (100). The cutting toolholder retention system (100) includes a cutting toolholder (108) having a flange recess and a holder engagement surface (140) and a support block (102) having a toolholder bore (104) into which the cutting toolholder is inserted and a block pin bore (106) intersecting the toolholder bore the block pin , bore (106) defining a block engagement surface (164) which is inclined downwardly relative to the toolholder bore. The cutting toolholder retention system (100) further includes a pin (112) having a pin shaft (180) the pin , shaft having a pin flange (190) which engages the flange recess so as to limit …
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 January 26, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 2020.
- 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.