Variable-force balancing device in particular for movable-axis hinges of electric household appliances and the like
CA 2452492 C · Owner: Bettinzoli, Angelo · Inventors: Bettinzoli, Angelo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Load-balancing device in particular for movable-axis hinges which comprises a sliding piece/sleeve (10;110) provided with means (11a;111a) for retaining a first end of a first coaxial spring (20) the other end of which has at least one fastening element (21) there being slidable coaxially with said sliding piece/sleeve (10) and with said first spring (20) a spindle (30) one end of which, inside said spring (20) has first means (31) for retaining one end of a second spring (40) which is coaxial with the first spring and the other end of which is housed inside a corresponding seat (11b) of the said sleeve (10;110) said first spring (20) having a load greater than said second spring (40).
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 December 9, 2003 and granted March 20, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2025.
- 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.