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2. Motorized wheelchair - Wikipedia

   en.wikipedia.org/wiki/Motorized_wheelchair

   This can take one of three forms: integrated with the hub of hand-propelled wheels, so that any force on the pushrims is magnified by the drive system, or mounted under the wheelchair and controlled as for a powerchair, but with the motive force either transmitted to the main wheels via a friction drive system, or delivered directly through an ...

3. Folding chair - Wikipedia

   en.wikipedia.org/wiki/Folding_chair

   Folding chairs also were used as grave goods in the richest graves. A folding chair of ebony and ivory with gold fittings was found in Tutankhamun's tomb in Egypt. Folding chairs were used in Ancient Egypt, Minoan Greece, and Ancient Rome, as well as during the Nordic Bronze Age and the Medieval Period. The frame was mostly made of wood, and ...

4. Swivel chair - Wikipedia

   en.wikipedia.org/wiki/Swivel_chair

   Office swivel chairs, like computer chairs, usually incorporate a gas lift to adjust the height of the seat, but not usually large (e.g. recliner) swiveling armchairs. A draughtsman's chair is a swivel chair without wheels that is usually taller than an 'office chair' for use in front of a drawing board. They also have a foot-ring to support ...

5. Wheelchair - Wikipedia

   en.wikipedia.org/wiki/Wheelchair

   Wheels are rubber-tired and may be solid, pneumatic or gel-filled. The wheels of folding chairs may be permanently attached, but those for rigid chairs are commonly fitted with quick-release axles activated by depressing a button at the centre of the wheel. All major varieties of wheelchairs can be highly customized for the user's needs.

6. List of chairs - Wikipedia

   en.wikipedia.org/wiki/List_of_chairs

   Folding chair, collapses in some way for easy storage and transport. Various folding chairs have their own names (e.g., deckchair, director's chair), but a chair described simply as a folding chair folds a rigid frame and seat around a transverse axis so that the seat becomes parallel to the back and the frame collapses with a scissors action.

7. X-chair - Wikipedia

   en.wikipedia.org/wiki/X-chair

   Roman X-chairs are believed to have been used by magistrates and nobles. [1] A type of folding chair with a frame like an X viewed from the front or the side originated in medieval Italy. Also known as a Savonarola or Dante chair in Italy, [1] or a Luther chair in Germany, the X-chair was a light and practical form that spread through ...