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US 2004/0104611 A1Published application
Adjustable armrest
AssigneeHerman Miller, Inc.
InventorsJerome C. Caruso, Steven J. Caruso, Bruce R. Gezon, Marc A. Gierz, Jack R. Nyenhuis
Life of this patent
Estimating the term…
Abstract
An adjustable armrest for a chair includes a housing having a cavity defined by a wall and a latch member slideably mounted in the cavity. The latch member includes a wedge shaped portion having a first and second surface forming a oblique angle between them. One of the first and second surfaces engages the wall of the housing at least when the latch is in the engaged position.
Claims72
A chair comprising:
- a housing;
- a back support pivotally connected to said housing about a first horizontal axis;
- a seat support pivotally connected to said housing about a second horizontal axis;
- at least one leaf spring comprising a first end engaging said housing and a second end biasing said back support and said seat support in an upward direction;
- and
- a fulcrum member moveably supported by said housing and engaging said at least one leaf spring between said first and second ends;
- whereby said fulcrum member can be moved so as to engage said at least one leaf spring at various points intermediate said first and second ends and thereby alter the amount of resistance applied to said back support and said seat support as a user tilts rearwardly on the chair.
4 more elements
A chair comprising:
- a three bar mechanism having a sliding pivot comprising a housing having a first and second pivot axes and forming a first bar between said first and second pivot axes, a back support pivotally connected to said housing at said first pivot axis and having a third pivot axes, said back support forming a second bar between said first and third pivot axes, and a seat support pivotally connected to said back support at said third pivot axis and pivotally and slideably connected to said housing at said second pivot axis, said back support forming a third bar between said second and third pivot axes;
- and
- at least one leaf spring comprising a first end engaging said housing and a second end biasing said back support and said seat support in an upward direction.
A chair comprising:
- a housing;
- a back support pivotally connected to said housing about a first horizontal axis;
- a seat support pivotally connected to said housing about a second horizontal axis, and pivotally and slidably connected to said housing about a third horizontal axis;
- at least one leaf spring extending longitudinally within said housing and comprising a first end engaging said housing and a second end biasing said back support and said seat support in an upward direction;
- and
- a fulcrum member moveably supported by said housing and engaging said at least one leaf spring between said first and second ends;
- whereby said fulcrum member can be moved so as to engage said at least one leaf spring at various points intermediate said first and second ends and thereby alter the amount of resistance applied to said back support and said seat support as a user tilts rearwardly on the chair.
4 more elements
A chair comprising:
- a housing;
- a seat support pivotally attached to said housing;
- a back support pivotally connected to said seat support and comprising a pair of upwardly extending and spaced apart uprights and a cross member connecting said uprights;
- a backrest slidably mounted on said uprights;
- an armrest slidably mounted on each of said uprights;
- at least one leaf spring comprising a first end engaging said housing and a second end biasing said back support and said seat support in an upward direction;
- and
- a fulcrum member moveably supported in said housing and engaging said at least one leaf spring intermediate said first and second ends.
5 more elements
A chair comprising:
- a back support comprising at least one upright, a first and second bar member mounted to said upright in a parallel and spaced apart relationship with each other;
- a backrest slidably mounted on said first bar member;
- an armrest slidably mounted on said second bar member.
A chair comprising:
- a housing;
- a seat support pivotally attached to said housing;
- a back support pivotally connected to said housing and comprising a pair of upwardly extending and spaced apart uprights and a cross member connecting said uprights;
- a backrest slidably mounted on said uprights;
- an armrest slidably mounted on each of said uprights;
- whereby said back support can be tilted rearwardly and whereby said back and said armrests can each be slideably adjusted on said back support.
3 more elements
A chair comprising:
- a back support comprising at least one upright having a longitudinal groove and a rack formed adjacent to said groove;
- a spline member having a tongue slideably received within said groove;
- a backrest mounted to said spline;
- a latch member mounted to said backrest and adapted to operably engage said rack whereby said backrest can be releasably secured in a desired position.
1 more element
A chair comprising:
- a back support comprising at least one upright having a channel;
- an armrest having a portion slidably mounted to said upright in said channel;
- a backrest mounted to said upright and covering said channel so as to substantially conceal the portion of the armrest mounted therein.
An adjustable armrest for a chair having a rack, said armrest comprising:
- a base portion having a cavity defined by a front wall;
- and
- a locking device disposed in said cavity, said locking device comprising a latch member slideably mounted in said cavity, said latch member comprising a wedge shaped portion having a first and second surface forming an oblique angle between them and a protuberance shaped to selectively engage said rack, said protuberance disposed on said first surface and said second surface slideably engaging said front wall of said base portion
- whereby said latch member is moveably between an engaged position wherein said protuberance selectively engages said rack and a disengaged position wherein said protuberance is disengaged from said rack, whereby said second surface of said latch member can be slid downwardly along said front wall to disengage said protuberance from said rack.
1 more element
A chair comprising:
- a housing;
- a seat pivotally mounted to said housing, said seat pivotable to a plurality of tilt positions;
- a tilt limiter engaged between said seat and said housing, said tilt limiter limiting the rearward tilting of the seat relative to the housing, said tilt limiter moveable between a plurality of settings, wherein a maximum rearward tilt position of said seat is determined by the setting of the tilt limiter, said seat having a plurality of maximum rearward tilt positions corresponding to said plurality of settings for said tilt limiter;
- and
- a selector member connected to said tilt limiter, said selector member comprising indicia for indicating the setting of the tilt limiter, whereby the user is apprised of the maximum rearward tilt position of the seat corresponding to the indicated setting of the tilt limiter even when said tilt position of said seat is other than the maximum rearward tilt position of the seat.
2 more elements
The chair of 24 further comprising a selector member connected to said tilt limiter, and wherein said tilt limiter is moveable between a plurality of settings such that a maximum rearward tilt position of said seat support is determined by the setting of the tilt limiter, said seat support having a plurality of maximum rearward tilt positions corresponding to said plurality of settings for said tilt limiter, said selector member comprising indicia for indicating the setting of the tilt limiter, whereby the user is apprised of the maximum rearward tilt position of the seat corresponding to the indicated setting of the tilt limiter even when said tilt position of said seat is other than the maximum rearward tilt position of the seat.
A chair comprising:
- a housing;
- a seat pivotally mounted to said housing, said seat pivotable to a plurality of tilt positions;
- a tilt limiter engaged between said seat and said housing, said tilt limiter limiting the rearward tilting of the seat relative to the housing, said tilt limiter moveable between a plurality of settings, wherein a maximum rearward tilt position of said seat is determined by the setting of the tilt limiter, wherein said seat has a plurality of maximum rearward tilt positions corresponding to said plurality of settings for said tilt limiter;
- and
- means for indicating the setting of the tilt limiter, whereby the user is apprised of the maximum rearward tilt position of the seat corresponding to the indicated setting of the tilt limiter even when said tilt position of said seat is other than the maximum rearward tilt position of the seat.
2 more elements
An adjustable armrest for a chair comprising:
- a housing having a cavity defined by a wall;
- a support member having a rack spaced from said wall and defining a surface forming a first oblique angle with said wall;
- and
- a locking device disposed in said cavity, said locking device comprising a latch member slideably mounted in said cavity, said latch member comprising a wedge shaped portion having a first and second surface forming a second oblique angle between them and a protuberance shaped to selectively engage said rack, said protuberance disposed on said first surface and said second surface slideably engaging said wall of said base portion;
- wherein said latch member is moveable between an engaged position wherein said protuberance selectively engages said rack and a disengaged position wherein said protuberance is disengaged from said rack, and wherein said second surface of said latch member is slidable along said wall between said engaged and disengaged positions.
2 more elements
An adjustable armrest for a chair comprising:
- a housing having a cavity defined by a wall;
- a latch member moveably mounted in said cavity between an engaged and disengaged position, said latch member comprising a wedge shaped portion having a first and second surface forming a oblique angle between them, wherein one of said first and second surfaces engages said wall of said base portion at least when said latch member is in the engaged position;
- and
- a spring biasing said latch member to said engaged position.
1 more element
The adjustable armrest of claim 72 wherein said spring is disposed between a bottom wall of said guide member and said latch member.
Dependencies are inferred from the claim text.