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US 6,273,506 B1Granted
Chair with an adjustable seat
AssigneeHerman Miller, Inc.
InventorsTom S Niergarth, Graham J. Britain, Ed Sudduth, Richard Holbrook
Life of this patent
Estimating the term…
Abstract
A chair includes a base, a backrest supported by the base, a seat support by the base, and a seat slidably mounted to the seat support. A seat adjustment device can be employed to allow for forward and rearward adjustment of the seat relative to the backrest.
Claims68
A chair comprising:
- a base;
- a support bracket supported above said base, said support bracket comprising a rack;
- a backrest connected to said base;
- a seat slidably mounted to said support bracket;
- and
- a lever slidably mounted to said seat, said lever moveable between an engaged position wherein said lever engages said rack and a disengaged position wherein said lever is disengaged from said rack, wherein said seat is slideable in a forward and rearward direction relative to said backrest when said lever is in said disengaged position.
3 more elements
A chair comprising:
- a base;
- a backrest connected to said base;
- a seat comprising a shell slidably mounted to a support bracket, wherein said support bracket is supported above said base, said support bracket comprising a plurality of teeth;
- a lever moveably mounted to said shell, said lever moveable between an engaged position wherein said lever engages at least one of said plurality of teeth and a disengaged position wherein said lever is disengaged from said plurality of teeth, wherein said seat is slideable in a forward and rearward direction relative to said backrest when said lever is in said disengaged position;
- and
- a spring biasing said lever into said engaged position.
3 more elements
A chair comprising:
- a base;
- a backrest connected to said base;
- a seat;
- means mounted to said base for slidably supporting said seat;
- and
- means mounted on said seat for engaging said support means so as to prevent slidable movement between said seat and said support means, said engagement means moveable between an engaged position wherein said seat is prevented from moving relative to said support means and a disengaged position wherein said seat is moveable relative to said support means and to said backrest.
3 more elements
The chair of claim l8 wherein said biasing means comprises a spring.
A chair comprising:
- a base;
- a backrest supported by said base;
- a seat support comprising a rack, wherein said seat support is supported by said base;
- a seat slidably mounted to said seat support;
- a latch member moveably mounted on said seat, said latch member moveable between an engaged position wherein said latch member engages said rack and a disengaged position wherein said latch member is disengaged from said rack, wherein said seat is moveable in a forward and rearward direction relative to said backrest when said latch member is in the disengaged position.
2 more elements
A chair comprising:
- a housing;
- a backrest supported by said housing;
- a seat support having a plurality of openings spaced along a portion thereof, wherein said seat support is supported by said housing;
- a seat slidably mounted to said seat support, wherein said seat is slideable in a forward and rearward direction relative to said backrest;
- a latch member moveably mounted to said seat and having an engagement portion shaped to be selectively received in at least one of said plurality of openings in said seat support, said latch member moveable between an engaged position wherein said engagement portion of said latch member is received in said at least one of said plurality of openings and a disengaged position wherein said engagement portion is removed from said at least one of said plurality of openings, wherein said seat can be moved relative to said said backrest when said latch member is in the disengaged position.
2 more elements
A chair comprising:
- a base;
- a seat support comprising a rack, wherein said seat support is pivotally connected to said base, said seat support pivotable between at least a reclined position and an upright position;
- a seat slidably mounted to said seat support;
- a lever member moveably mounted on said seat, said lever member moveable between an engaged position wherein said lever member engages said rack and a disengaged position wherein said lever member is disengaged from said rack, wherein said seat is moveable in a forward and rearward direction relative to said seat support when said lever member is in the disengaged position.
1 more element
A chair comprising:
- a base;
- a seat support having a plurality of openings spaced along a portion thereof, wherein said seat support is pivotably connected to said base;
- a seat slidably mounted to said seat support, wherein said seat is slideable in a forward and rearward direction relative to said seat support;
- a lever member moveably mounted to said seat and having an engagement portion shaped to be selectively received in at least one of said plurality of openings in said seat support, said lever member moveable between an engaged position wherein said engagement portion of said lever member is received in said at least one of said plurality of openings and a disengaged position wherein said engagement portion is removed from said at least one of said plurality of openings, wherein said seat can be moved relative to said seat support when said lever member is in the disengaged position.
1 more element
A chair comprising:
- a base;
- a backrest supported by said base;
- a seat bracket comprising a rack, wherein said seat bracket is supported by said base;
- a seat slidably mounted to said seat bracket, wherein said seat is slideable in a forward and rearward direction relative to said backrest;
- a lever moveably mounted on said seat, said lever moveable between an engaged position wherein said lever member engages said rack and a disengaged position wherein said lever member is disengaged from said rack, wherein said seat is moveable in a forward and rearward direction relative to said backrest when said lever is in the disengaged position;
- and
- a spring biasing said lever into said engaged position.
4 more elements
Dependencies are inferred from the claim text.