Machine for producing cardboard or similar tubes, with means for cutting the tube into sections of predetermined lengths
CA 2173479 C · Owner: Biagiotti, Guglielmo · Inventors: Biagiotti, Guglielmo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A machine for producing tubes by winding into a spiral strips of ribbon-shaped material (N) on a spindle (1) comprises a winding, unit (5) which winds into a spiral two or more overlapping and staggered strips of ribbon-shaped material on the said spindle (1) and causes the tube (T) formed from the said material to advance continuously and a cutting unit (33) fitted with rotating tube-cutting means (63 65) and provided with a reciprocating traveling motion along the direction of advance of the tube to cut the said tube into sections of predetermined length during the advance of the tube. The said cutting unit (33) is associated with members (97 101, 105, 107) for driving, the rotating …
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 October 4, 1994 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2016.
- 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.