The Humanscale Liberty chair with height adjustable Headrest features a revolutionary counter-balance mechanism, based around movement. Your body weight automatically balances the force required to recline the chair. So the recline tension is always perfectly adjusted to let you move while keeping you fully supported in all positions. The Liberty chair features a height adjustable back rest, height adjustable headrest and a seat with built in seat slide to adjust the seat depth.
The Humanscale Liberty chair by Niels Diffrient has revolutionized the task chair arena with its forward thinking design based around movement. It has won 10 different design awards including the Design Distinction Award in the ID Design Review 2000 competition. The Chair features weight-sensitive recline and synchronously adjustable armrests which keep the sitter exceptionally comfortable while also lowering the risk of long-term injury.
Finished in Oxygen Black Fabric or Bison Black Leather.
Features
1) Automatic Headrest
Freedom’s dynamic, position sensitive headrest adjusts to cradle your head and neck as your recline, and moves out of the way when you sit upright automatically.
2) Recline Action
As you recline, you’ll maintain a near consistent eye level, while the angle between your torso and legs opens up for better body function.
3) Contoured Cushions
The cushions are sculpted to closely follow body contours, which increase contact and decreases concentrated loads. Our optional Technogel® seat cushion maximizes weight distribution and comfort.
4) Responsive Backrest
The pivoting backrest automatically adapts to the changing needs of your spine during recline.
5) Synchronous Armrests
Freedom’s body-friendly gel armrests move up and down together and stay with you during recline, always keeping you in supported balance.
6) Body Fit
The seat, backrest and headrest may be independently positioned to fit your exact body size.
7) Intelligent Mechanism
With Freedom’s revolutionary counter-balance mechanism, your weight automatically balances the force required to recline the chair. So whether you’re big or small, short or tall, the recline tension is always perfectly adjusted to let you move while keeping you fully supported in all positions.
Standard Features
Self-Adjusting Recline
Intelligent counter-balance recline mechanism automatically provides the right amount
of support through the full range of recline motion, regardless of user size and weight
No tension springs to adjust
No recline locks to set/release
During recline, the angle between torso and legs opens up for better body function
User maintains near-constant eye level during recline
Pivoting Backrest
Extra motion of the backrest during recline automatically adjusts to the changing needs
of the spine
Provides up to 1” additional lumbar support when needed
Synchronous Armrests
Revolutionary armrests move in tandem to eliminate uneven arm positioning
Natural lift and release action for immediate repositioning without buttons or locks
6” range of vertical motion to accommodate all users and tasks
Can be positioned below thigh level for close table or desk work
Attached to backrest so arms stay in same relation to body during recline
Duron arm pad for durability and comfort
Standard Cylinder
Provides seat height range that accommodates 95% of the population
Contoured Cushions
Carefully sculpted to match body contours
Increased contact area reduces pressure points
Modular for easy replacement
Body Fit
Size adjustable to fit more than 95% of the population
Adjustments for fit-to-size:
Headrest: 5” vertical adjustment range
Seat Height: 5” adjustment range
Seat Depth: 2.25” adjustment range
Backrest/Lumbar Support Height: 3” adjustment range
Hard Casters
2.5” double-wheel casters for carpeted floors
Optional Features
Dynamic Headrest
Position-sensitive headrest moves into place when you recline and out of the way when you sit upright
5” vertical adjustment to fit all users
Moves in the natural arc of head/neck for perfect support through range of recline
Contoured to cradle the head and neck in comfort
Gel Seat Cushion
Non-degradable, non-compressible Technogel® layer on top of foam core
Provides maximum pressure distribution
Offers unmatched, long-term comfort
Arm Pad Option
Flexible Duron
Technogel® for optimal comfort
Cylinder Options
Low cylinder for small users
Tall cylinder for very tall users
High cylinder with foot ring
Extra-high cylinder with foot ring (Saddle seat only)
Foot Ring
Chrome finish
Height-adjustable
Caster Options
2.5” soft double-wheel casters for hard floors
Non-rolling glides for fixed-location use
2.5” locking casters
Fireproofing
CAL 133-approved
Fireproof barrier between textile and foam
Fire-retardant plastics
| CODE | DESCRIPTION | MEASUREMENT |
| a | Seat Depth (from face of lumbar to front of seat) |
16.25″– 18.5″ |
| b | Seat Height (floor to compressed front center of seat cushion) |
16″– 21″ standard 15.25″– 19″ low cylinder 17″– 22.25″ tall cylinder 20.5″– 28.5″ high cylinder chair |
| c | Seat Width | 21″ |
| d | Backrest Height (from seat cushion to top of backrest)
|
18″ – 21″
|
| e | Chair Width | 27.25″ |
| f | Armrest Height (compressed seat cushion to top of armrest)
|
5″ – 11″
|
| g | Armrest Length (from face of lumbar to front of armrest) |
13″ |
| h | Distance between Armrests (front inside edge) |
20″ standard 18.25″ – 21.25″ advanced |
| i | Height (no headrest) |
33.5″ – 41.5″ standard 32.75″ – 39.5″ low cylinder 34.5″ – 42.75″ tall cylinder 38″ – 49″ high cylinder |
| j | Height (with headrest) |
43″ – 53″ standard 42.25″ – 51″ low cylinder 44″ – 54.25″ tall cylinder 47.5″ – 60.5″ high cylinder |
| k | Headrest Height Adjustment Range | 5″ |
| l | Base Diameter | 25″ |
| m | Foot Ring Diameter | 18″ or 21″ |
| n | Foot Ring Height Adjustment (from floor) | 6″ – 11″ |
| o | Backrest Width | 21″ |
Scope of Users
Standard chair fits more than 95% of the office population
5’0” Woman to 6’4′ Man 100 to 300 lbs.
Users outside the standard range can be accommodated by: Low or Tall Cylinder
Weight 35 lbs.
Backrest Recline 22° recline plus 7° backrest tilt
Reference Angle between Seat and Back 100° to 129°
Advanced Task Armrests
Horizontal angle change from elbow pivot point
35° each armrest
Lockable in 5° increments
New arm assembly features clean aesthetic and improves efficiency of use,
allowing the user to adjust the arms with just one hand
Headrest Radial Motion (automatic motion during recline) 30°
Lumbar Support Increase in Recline 1″
Warranty Information
15 Years, 24/7 Warranty
Fabric/Cushions/Arm Pads: 5 Years, Single-Shift Warranty
