Synchronizing mechanism for a chair
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United States of America Patent
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app pub date -
Dec 26, 2007
filing date -
Jun 26, 2005
priority date (Note) -
Abandoned
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Abstract
A synchronizing mechanism for a correlated seat/backrest movement of an office chair has a base carrier, which can be placed on a chair column, a seat carrier and a backrest carrier. In order to provide a synchronizing mechanism in which there is no need to adjust a spring force in order to change the 'pivoting resistance' of the backrest, the backrest carrier, which can be pivoted about a transverse spindle, is connected on the one hand to the base carrier, via a first link, and on the other hand to the seat carrier, via a second link, such that a pivoting movement of the backrest in the rearward direction induces a raising movement of the rear region of the seat carrier, and that the seat carrier is connected to the base carrier such that a raising movement of the forward region of the seat carrier takes place at the same time. A basic idea of the invention is that the user of the office chair 'raises' itself upwards by subjecting the backrest itself to loading.
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