Sales line: 01212 88 55 00
Free delivery on most orders!
No minimum order value. No hidden delivery charges at checkout. UK Mainland only - Ireland, Highlands and Islands, please call for price.
Display Systems

Chair Mechanisms Explained

Below are the most commonly used icons in our site with a brief explanation. Please feel free to contact us for a specific detail if you are unsure before you order.

Alpason Usage

recommended use (in hours)

back height adjust

back rake adjust

knee tilt adjust

seat height adjust

seat slide adjust

synchronised tilt adjust

traditional tilt adjust

traditional tilt adjust

 

 



Seating Item Description

ADJUSTABLE BACK HEIGHT
Adjusts and locks the back only in various heights up and down for additional back and neck support


KNEE TILT
Similar to tilt tension but the pivot under the chair reclines back from under the knees

SEAT SLIDE
Adjusts to create a larger seat area and additional support at the back of the knees


ADJUSTABLE BACK RAKE
Adjusts the back only for support and comfort. Can be locked at a desired angle


WEIGHT TENSION CONTROL
The tilt allows the whole chair to recline on a pivot under the seat. The resistance can be adjusted according to the users bodyweight


SEAT HEIGHT
Allows the user to adjust the seat height for maximum support and comfort


SYNCHRONISED
Adjusts the angle of both the back and seat independently of each other


TRADITIONAL TILT
Allowing the user to lock the chair at a desired point of recline for maximum comfort

 

 



  Usage icon Description


2 HOURS USAGE
Can be used for up to 2 Hours per day, Ideal for Light Home/Office Use


4 HOURS USAGE

Can be used for up to 4 Hours per day, Ideal for Light Home/Office Use


8 HOURS USAGE
Can be used for up to 8 Hours per day, Ideal for Normal Office Requirements

12 HOURS USAGE
Can be used for up to 12 Hours per day, Ideal for more severe working conditions


24 HOURS USAGE
Can be used for up to 24 Hours per day, Ideal for CalCentres, Control Rooms & Other Demanding Uses

 

 


TC Office Chair Mechanisms

Fixed back mechanism
The seat will go up and down, the back rest will go up and down and in and out, but you can’t change the angle of the back rest.
Sliding seat mechanism
The sliding seat comes as standard on our Cheetah and Vista chairs, providing seat depth adjustment for different user leg lengths.
Permanent contact mechanism (PCB)
The seat will go up and down, the back rest will go up and down and in and out, and you can fix the angle of the back rest or leave it free floating – i.e. in ‘permanent contact’ with your back.
Stackable chair
This model of chair is designed to be safely stacked on itself to a maximum of the number shown.
Asynchro torsion mechanism
The seat will go up and down, the back rest will usually go up and down, you can fix or free float the back rest and fix or free float the angle of the seat – independently of the back rest. You can even adjust the torsion control knob to match your body weight. This lets you find the perfect position to use a computer – even tilting forwards.    
 

A twin-lever mechanism, the right lever allows you to adjust the seat height up and down and the left lever can be used either to lock the chair in any one of three or five positions (lockable positions indicated by number shown) or can be left to tilt with the user. The pivot point is found towards the front of the seat so that your feet remain on the floor when tilting backwards. A torsion control knob can be adjusted to user body weight and a non-return facility prevents the user from being thrown forward when the mechanism is unlocked.
Asynchro mechanism
The seat will go up and down, the back rest will go up and down, you can fix or free float the back rest and fix or free float the angle of the seat – independently of the back rest. This lets you find the perfect position to use a computer – even tilting forwards.
Synchro mechanism
The seat will go up and down and you can fix or free float the angle of the seat and back rest together – usually in a ratio of 2:1, so for every one degree the seat tilts, the back rest tilts two degrees. Our synchro chairs can be fixed in any one of three, four or five positions, indicated by the number shown. The easy way to find a comfortable position. You can even adjust the torsion control knob to match your body weight. (All of our synchro mechanisms have an ‘anti-shock’ facility which means you aren’t thrown forward when the mechanism is unlocked).
Lock-tilt mechanism
A single lever lets you adjust the seat height up and down and lock or unlock the tilt of the chair. These mechanisms can either be locked in an upright position or left to free float with the user. They all have a torsion control knob to adjust to body weight.

 

ADJUSTABLE BACK HEIGHT
Adjusts and locks the back only in various heights up and down for additional back and neck support


KNEE TILT
Similar to tilt tension but the pivot under the chair reclines back from under the knees

SEAT SLIDE
Adjusts to create a larger seat area and additional support at the back of the knees


ADJUSTABLE BACK RAKE
Adjusts the back only for support and comfort. Can be locked at a desired angle


WEIGHT TENSION CONTROL
The tilt allows the whole chair to recline on a pivot under the seat. The resistance can be adjusted according to the users bodyweight


SEAT HEIGHT
Allows the user to adjust the seat height for maximum support and comfort


SYNCHRONISED
Adjusts the angle of both the back and seat simultaneously


TRADITIONAL TILT
Allowing the user to lock the chair at a desired point of recline for maximum comfort

 

Office and Chairs

Promote your Page too
 
 
Copyright © 2010-2012 Office & Chairs. All Rights Reserved | Designed and powered by JDR Group Web Design
FacebookTwitterLinkedInBloggerLinkedIn