Feedthrough
CA 1293697 C · Owner: Becker, Karlheinz · Inventors: Vandeputte, Filip Willy Antoon; Becker, Karlheinz; Herr, Gernot
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A feedthrough device for sealing of supplylines such as pipes or cable passing through a duct in a wall comprises first and second sealing portions which can be biased into contact with the duct in the wall at, either end thereof, and a flexible for example convoluted, portion connecting the sealing portions which can be stretched or compressed axially to allow the length of the feedthrough device to be adjusted according to the thickness of the wall . Each sealing member contains a biassing means , for example a rolled spring which can be activated after positioning the feedthrough device in the duct , to force the sealing members into contact with the duct .
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
- Granted December 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 2008.
- 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.