usa design patented
watch demonstration in the dental clinic:
The only chair in the world where the back rest comes to you!
The ErgoDynamic is the only chair in the world where the backrest automatically advances towards the back when needed. (usa design patented) is our most advanced work stool. It features the unique patented scissor-mechanism and
When sitting down on the ErgoDynamic
When sitting in an active working position, the seat assumes a positive inclination of 3 degrees. With normal fatigue, leaning back may seem comfortable, but in fact, a slumping position increases the risk of disc pressure and irritation of the posterior longitudinal ligament and/or facet joints. The mechanism automatically compensates for this by tilting the seat 6 degrees back and advancing the lumbar support towards the lower back for optimal correction.
For the best performance, the ErgoDynamic® should be adjusted to each individual user, for which we offer detailed support and instruction.
Body height: choose cylinder size ST if your body height is under 6 ft, choose size L if you're taller than 6 ft.
Body weight: the N-number determines the amount of resistance of the internal cylinders (N for Newton).
450N if body weight is between 110 - 160 lbs
550N if body weight is between 160 – 240 lbs
650N if body weight is > 240 lbs (maximum 275 lbs)
Seat size: the seat comes in regular and extra wide size. The extra-wide seat is standard included with 650N models.
Scale setting: once the chair is built right for you, you make the final adjustment by setting the weight knob under the seat (number 4).
You only have to do this once.
Now the chair is fully attuned to your personal body dimensions and individual movement!
If you already have a chair: you can find all the specifications of your chair on the back of the seat, on the gold label. The label displays the serial number, an S or B for seat width (S for narrow, B for extra wide) , and the N number for the resistance factor of the tilting mechanism preceeding the seat width letter.
"Finally, a family of chairs I can stand behind.
BQErgonomics chairs are functionally fashionable as well as elegantly engineered."
Dr. Scott Donkin, DC, DACBOH
Author: Sitting On The Job, Fit For Work, Peak Performance Body and Mind, Sitting Fit
BQ Ergonomics LLC
11868 West 91st Street
Overland park, KS 66214