Device for removing internal circular flash
CA 1069286 A · Owner: Elektrostalsky Zavod Tyazhelogo Mashinostroenia · Inventors: Koltyrev, Dmitry N.; Polyansky, Ivan I.; Shklyanov, Leonid P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device for avoiding internal circular flash during resistance butt-welding of pipes. The device includes a tool head with a body which head carries a, holder with a cutting tool. An appliance brings the tool head to the flash-removing zone, and the appliance is provided with a cantilevered rod whose free end is connected to the tool head. A radial feed mechanism of the holder is accommodated in a housing of its own and includes a drive for rotating the mechanism. The radial feed mechanism of the holder is made in the form of a hydraulic cylinder whose rod carries a rigidly secured holder connected with the housing of the radial feed mechanism by springs which …
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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 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.