Spring system having a variable spring characteristic
CA 1237152 A · Owner: Flemming Hvidt Mýbelarkitektfirma A/S · Inventors: Pontoppidan, Eskild
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spring system for providing an elastic force between two objects, is disclosed, including a housing with two parts the first part adapted for attachment to the first object and the second part adapted for attachment to the second object. Within the housing are two coil springs the first spring having, one of its ends attached to the first housing part and its other end attached, via a coupling piece, to one end of the second spring. The other end of the second spring is attached to the second housing part. The first housing part is dimensioned to encase the first spring, and is provided with at least one opposed pair of substantially transversely extending slits. A fork-shaped member is …
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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 May 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
- 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.