Continuously rotating shears
CA 2345533 A1 · Owner: Pittari, Giampietro · Inventors: Pittari, Giampietro; Drigani, Fausto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Continuously rotating shears (10) to shear to size metallic strip fed continuously at up to around 20 meters per second and having a thickness of from 0.5 mm to 5 mm and a width of from 500 mm up to at least 1500 mm, comprising two blade-bearing drums (11 111), the drums (11, 111) being supported at the ends by rotary cams (13 113) , governed by shearing command means (15 16), the drums (11, 111) being positioned between the sides (18) of the frame (17) and being made to rotate by an external source of motion each drum (11, 111) including an external gear (20 120) cooperating with an inner toothing (26, 126) of a rotary tube (21, 121) which has an outer toothed wheel (25, 125), the two …
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 21, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 21, 2021.
- 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.