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Office chair having tiltable seat and back

  • US 8,272,692 B1
  • Filed: 10/20/2010
  • Issued: 09/25/2012
  • Est. Priority Date: 10/26/2009
  • Status: Expired due to Fees
First Claim
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1. An office chair having tiltable seat and backrest members, comprising:

  • a support module;

    a seat carrier supported by said support module;

    a seat member articulated to said seat carrier such as by being pivotal along a front end of said seat member, said seat member having a first initial position of being forwardly declined;

    a backrest carrier having a backrest member, said backrest carrier articulated to said seat carrier such as by being pivotal along a lower end of said backrest carrier, said backrest carrier and said backrest member having a second initial position of being rearwardly angled;

    an actuator arm directly linking said seat member to said backrest carrier; and

    a spring arrangement connected to said backrest carrier to return said backrest carrier and thus said seat member via said actuator arm to said first and second initial positions when a weighted load is lessened or removed from a rear end of said seat member, wherein said spring arrangement has an adjustment mechanism.

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