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Mobile joint with several stable positions, suitable for use in furniture

  • US 7,497,516 B2
  • Filed: 01/06/2003
  • Issued: 03/03/2009
  • Est. Priority Date: 01/04/2002
  • Status: Expired due to Fees
First Claim
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1. A mobile joint (1) for a seating construction for mounting between a seat device (100) of a seating construction and a support (200) for said seat device (100), comprising at least two joint elements (10, 30) wherein each joint element is pivotable to a limited degree in relation to each joint element that it is connected to, permitting the mobile joint (1) to pivot between two extreme positions in order to allow a tilting movement of the seat device (100), effected by the user'"'"'s weight displacement, wherein the mobile joint contains a first joint element (10) mountable at a first end to the support (200) and at a second end only mounted pivotally to a first end of a middle joint element (20) at a first rotational axis (40), and further containing a second joint element (30) mountable at a first end to the seat device (100) and at the second end only mounted pivotally to a second end of the middle joint element (20) in a second rotational axis (50), wherein the said rotational axes (40, 50) are horizontally displaced in relation to each other, and whereby the joint (1) assumes a stable tilting position between the two extreme positions when the user'"'"'s center of gravity is above a point between the first and second rotational axes;

  • wherein at least two of the joint elements (10, 20, 30) are spring-loaded in relation to each other by a torsion spring.

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