Piece of seating furniture
CA 1278995 C · Owner: Vonhausen, Robert · Inventors: Hansen, Eckhard; Machate, Rainer; Vonhausen, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The underlying object of the invention is to create a piece of seating furniture with which an automatic bodyweight-, dependent setting of the restoring force of the inclination mechanism and of the back part mechanism takes place. According to the invention, the seat part (2) is mounted on the seat carrier (5) vertically adjustable by means of a parallelogram linkage arrangement (9, 10) against the pretensioning force of a spring element (16), furthermore the back carrier (4) is mounted pivotally on the seat carrier (5), a pivoting of the back carrier (4) taking place against the pretensioning force of the spring element (16). The piece of seating furniture according to the invention can …
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 January 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 2008.
- 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.