Cover for openings contiguous to a swimming pool
CA 2130046 A1 · Owner: Quaker Plastic Corporation · Inventors: Spies, Paul D.; Dahowski, Donald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cover devised to be positioned over and to overlay an opening contiguous to a swimming pool such as a stairwell opening. The cover is a preformed modular plastic unit. The cover may comprise a single molded piece or a plurality of pre-molded sections that are secured side-by-side to form a rigid unit. The cover is preferably slightly domed and provided with integrally formed strengthening ribs or channels. The dome shape facilitates flowing of water which may accumulate on the cover surface to the rear and to the sides of the cover. Suitable means such as pliable plastic water filled tubes or other hold, down means, function to retain the cover in place when in position, against …
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
- Filed August 12, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 12, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2016.
- 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.