Apparatus for storing drill rods
CA 2085474 C · Owner: Rajakallio, Pauli · Inventors: Koskelo, Pekka; Launiemi, Markku; Rajakallio, Pauli
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for storing drill rods (8) compris-, ing two drill rod cartridges (7a 7b) each comprising a, rotating rotor (13a 13b) provided with finger boards, means (16 17) for guiding the drill rods (8) into gaps (15) formed by the finger boards circumferentially around the axis of the rotor (13a, 13b). The rotors (13a 13b) are arranged to rotate in opposite directions in such a way that projections (14) in the finger boards of one rotor (13a, 13b) are positioned in alignment with gaps (15) in the other rotor (13b, 13a), the drill rods (8) being positioned therebetween and then passed alternately with the rotor (13a, 13b) of the two cartridges (7a 7b), along spirals (16, 17) 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 June 11, 1991 and granted January 29, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2013.
- 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.