Explosive powder charge operated setting tool
CA 2121283 C · Owner: Hilti Aktiengesellschaft · Inventors: Jochum, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An explosive powder charge operated setting tool uses compressed propellant gases for returning a piston from an end position to a starting position. The piston is axially displaceable by the propellant gases within an axially extending guide bore in a piston guide. The propellant gases flow from the guide bore through a first opening into an axially extending channel outside the piston guide and then through a second opening in the region of the end position of the piston back to the guide bore. After the piston is driven into the end position compressed propellant gases within the guide bore return the piston to the starting position where it impacts against the base of a cartridge …
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 April 14, 1994 and granted June 13, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2016.
- 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.