Automatic machine tool
CA 1071908 A · Owner: Evans, Richard F. · Inventors: Evans, Richard F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The particular machine described has a series of main collets mounted in an indexable drum each main, collet having an associated reciprocable feed tube carrying at its rear end a one-way feed collet employing wedging elements in the form of spring-loaded balls carried in inclined bores of the feed collet body the, feed tubes and feed collets being indexed with the main collets and with a reel-type bar holder. When the collets are arranged to feed non-round bar stock each feed collet is keyed to its associated main collet to enable nonrotating bar stock to be introduced into a rotating feed collet from the bar holder, to be rotated by the feed collet and then fed through the main collet …
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
- Granted February 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 1997.
- 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.