Abstract: A children's tricycle comprises a frame, a set of handlebars, a fork, three wheels and a seat adaptable for users of different sizes without modification. The frame comprises a top tube, a head tube and a rear triangle that is substantially perpendicular to the top tube. In some embodiments, the seat extends from the head tube to a point on the frame. In some embodiments, the seat extends from a pivot point of the tricycle along the top tube to the rear triangle. Accordingly, to utilize the tricycle, different sized users are able to move forward or backward on the seat to comfortably engage the pedals and handlebars of the tricycle. In some embodiments, the frame of the children's tricycle comprises one or more of steel, aluminum and metal composite.

Abstract: In a separable lightweight armchair comprising a backpiece, two sidepieces and a seatpiece, the sidepieces are separably edge-assembled with the backpiece, in that they from a slantingly backward directed position are inserted on firm coupling parts on the backpiece, in that the coupling parts are inserted in the clearance between two parallel framewires on the sidepiece, and hereafter rotated forwards to a locking mesh with the coupling parts. The sidepieces are locked in their forwardly directed normal position by a traverse piece at the front.