Machine tool
CA 2215095 C · Owner: Hiramoto, Kazuyuki · Inventors: Tanikawa, Naozumi; Takayama, Naoshi; Hiramoto, Kazuyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To provide a compact size machine tool free from the inconveniences inherent to the prior art and excellent in the collection and removal of chips or the like there is, provided a channel 39 in a central portion of the bed 3 directly beneath the table 21 and extending parallel to the table moving direction; a chip conveyor 47 being provided inside the channel 39; on both sides with respect to the channel 39, a pair of opposite slopes 51 51 for collection of chips as well as telescopic covers 53, 53 extensible or contractible in accordance with the displacement of the table 21 being provided so as to cover a pair of guide rails 13, 13 which extend parallel to each other along the Z direction.
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 September 8, 1997 and granted April 16, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 8, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 8, 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.