In-die tapping tool
CA 2127353 C · Owner: Danly Iem, Llc · Inventors: Maynard, Scott D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An in-die tapping tool (1) having particular application to a progressive die method for threading holes (108) in a sheet metal workpiece (106). The tapping tool (1) includes a transmission system comprising a threaded shaft assembly (26) and a planetary roller nut (42). The roller nut (42) is adapted to move axially along the shaft assembly (26) in response to an impact force applied to the tapping tool (1) during the downstroke of the press. The movement of the roller nut (42) causes the shaft assembly (26) to rotate which rotation is imparted to a threaded lead screw (70) to cause the lead screw (70) to simultaneously rotate and ride axially along a threaded wall (7) of a hollow …
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 January 21, 1993 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 21, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2015.
- 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.