Mattress with means to support bedclothes above a user's feet
CA 2071475 C · Owner: Lou, Kwong Li · Inventors: Lou, Kwong Li
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flexible member which extends about foot high is transversely mounted at the foot end of the flat mattress for supporting bedclothes at the foot end area to reduce the pressure on the upward pointed toes when a person sleeps face-up. Detachable and/or pivotable mounting means allow the flexible member to be mounted on either side and on either end of said mattress. Further, provision may be made to allow the flexible member to be selectively positioned along the length of the mattress. The flexible member is provided with electrical heating device and thermostat control for warming up the feet area.
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 June 17, 1992 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2014.
- 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.