Collapsing frame for moving tubes of plastic material
CA 2104552 C · Owner: Planeta, Mirek · Inventors: Planeta, Mirek
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A collapsing frame for collapsing a moving tube of plastic material from a circular cross section to a flattened form has a pair of frame members positionable on diametrically opposite sides of the tube to converge towards each other in the direction of movement of the tube so as to collapse the tube by engagement of the tube therewith. Each frame member has mounted thereon for engagement by the tube a series of longitudinally spaced roller assemblies mounted for free rotation about axes substantially transverse to the direction of movement of the tube. Each roller assembly comprises at least one rotatable roller having a peripheral surface oriented to tend to move the tube at an outwardly …
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 August 20, 1993 and granted February 29, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 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.