Disposable drum
CA 2186115 C · Owner: Ulvator Ab · Inventors: Lindstrand, Ulf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disposable drum for instance for cable and line consisting of a stable sleeve (1) having a predetermined inner diameter Dhi, two end elements (2 3) and two, central plugs (4, 5), each end element having an aperture (12) for the sleeve and receiving and firmly clamping the end portion of the sleeve between it and the plug, and the plug (4, 5) has a leading expansion part (19) which expands the sleeve when inserted and, an adjacent friction part (20) which produces friction engagement with the sleeve after full insertion of the plug and cooperates with the end element so that the sleeve is firmly clamped by friction engagement between the plug and the end element, said expansion part and …
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 March 28, 1995 and granted August 13, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 28, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 2017.
- 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.