Floatation chamber for use in a chest drainage device
CA 1324938 C · Owner: Kerwin, Michael J. · Inventors: Kerwin, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A chest drainage device having a collection chamber, a water seal chamber and a suction control chamber wherein the suction control chamber includes first and second columns wherein the top end of the first column is open to the atmosphere and the top end of the second column is in flow communication with a vacuum source and water seal chamber and wherein the bottom end of the first and second columns are in communication with a float chamber to increase the effective dynamic water height of liquid in the suction control chamber to decrease the overall height of the suction control chamber of the chest drainage device while maintaining the same operational range as previous chest drainage …
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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
- Granted December 7, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 2010.
- 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.