Extruded ptfe paste packing
CA 1163392 A · Owner: Unasco Pty. Limited · Inventors: Bentley, Herbert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved packing material suitable for use in a gland is provided which improved packing material comprises a sintered blend of PTFE resin and at least one filler material. Rings of the improved packing material can be used as retaining rings in a gland to substantially prevent squeezing of a more pliable and soft packing material from the gland under pressure in use.
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 March 6, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 2001.
- 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.