Polymeric basket frame for a traveling water screen
CA 1255610 A · Owner: Envirex Inc. · Inventors: Rozanski, Mark J.; Strow, Donald A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A basket frame for a traveling water screen includes a pair of hollow parallel lip beams connected together by end plates which are secured to the lip beams by plugs fixed to the ends of the hollow lip beams. The hollow cores of the lip beams are sealed against ingress of water so that the basket frame is buoyant in water. The lip beams are formed of pultruded fiberglass with cross sectional shapes which are provided with complementary curved surfaces so that the adjacent lip beams on adjacent baskets provide a close fitting seal on the vertical run of the basket train and also on the curved section at the bottom of the basket train where the baskets make the turn around the traction wheel.
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 June 13, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 13, 2006.
- 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.