Drain trap
CA 1098327 A · Owner: Kumagai, Shigeto · Inventors: Kumagai, Shigeto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A drain trap comprising a plurality of flat water conveying plates provided with fine clearances between adjacently arranged plates and securely fixed radially through ribs, at the lower part of said water conveying plates another, water conveying plate of a Y-shape in section having a water gathering passage and provided with fine clearances between the Y-shaped arms thereof and said oppositely arranged flat plates, said oppositely arranged plates and said Y-shaped plate being securely fixed to one another through another ribs the, narrow end of the assembled plates being tightly engaged within a drain pipe through packing material.
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 31, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 1998.
- 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.