Pushchair for elderly or disabled adults foldable in two planes

Pushchair for elderly or disabled adults, of the type formed of a first and a second tubular side, having a seat and a backrest respectively fixed between the first and the second tubular side, the seat and the backrest being respectively formed of collapsible material, the first and second tubular side being capable of being brought closer and farther relative to one another by means of a first and a second pantograph-shaped crosspieces, the first pantograph-shaped crosspieces comprising a rear crosspiece and the second pantograph-shaped crosspieces comprising a front crosspiece, the front crosspiece being shorter than the rear crosspiece, the front crosspiece and the rear crosspiece being interposed between the first and the second tubular side, wherein:

• the first tubular side is formed of a first rear vertical tubular section and of a first short front vertical tubular section, wherein a first wheel is supported at the lower end portion the first rear vertical tubular section, wherein the upper end portion of the first rear vertical tubular section extends upwardly and is slightly incline backwards relative to the back end portion of the pushchair, wherein the upper end portion of the first rear vertical tubular section forms a first handle, wherein a first swivel wheel is supported at the lower end portion of the first short front vertical tubular section, and wherein the first rear vertical tubular section is longer than the first short front vertical tubular section;
• the first rear vertical tubular section and the first short front vertical tubular section are mutually connected and articulated by means of a first lower crossbar and a first arm on a first side of the pushchair, wherein the first lower crossbar and the first arm are capable of joint oscillations;
• the pushchair characterized in that, the first lower crossbar is pivoted, with respect to a suitable pin with horizontal axis, between an end portion of a first inward protruding bracket towards the bottom end portion of the first rear vertical tubular section and a first point on the first short front vertical tubular section near the lower end portion of the first short front vertical tubular section;
• the second tubular side is formed of a second rear vertical tubular section and of a second short front vertical tubular section, wherein a second wheel is supported at the lower end portion the second rear vertical tubular section, wherein the upper end portion of the second rear vertical tubular section extends upwardly and is slightly incline backwards relative to the back end portion of the pushchair, wherein the upper end portion of the second rear vertical tubular section forms a second handle, wherein a second swivel wheel is supported at the lower end portion of the second short front vertical tubular section, and wherein the second rear vertical tubular section is longer than the second short front vertical tubular section;
• the second rear vertical tubular section and the second short front vertical tubular section are mutually connected and articulated by means of a second lower crossbar and a second arm on the other side of the pushchair, wherein the second lower crossbar and the second arm are capable of joint oscillations, and wherein the first arm and the second arm support the seat;
• the pushchair characterized in that, the second lower crossbar is pivoted, with respect to a suitable pin with horizontal axis, between an end portion of a second inward protruding bracket towards the bottom end portion of the second rear vertical tubular section and a second point on the second short front vertical tubular section near the lower end portion of the second short front vertical tubular section;
• the rear crosspiece is positioned in such a way that respective upper end portions of the rear crosspiece are respectively fixed, with respect to suitable pins with horizontal axis, on corresponding wings protruding edgeways on the back of the slightly backwardly inclined portion of the respective upper end portion of the first and the second rear vertical tubular section, while the respective lower ends of the rear crosspiece are pivoted, with respect to suitable pins with horizontal axis, on respective rear end portion of the first and the second lower crossbar, upstream from the respective pivoting point between the first lower crossbar and the first inward protruding bracket, and between the second lower crossbar and the second inward protruding bracket, respectively;
• and
• respective upper end portions of the front crosspiece are respectively pivoted, with respect to pins with horizontal axis, under the first and the second arm, respectively, while the respective lower end portions of the front crosspiece are respectively pivoted, with respect to pins with horizontal axis, on the first and the second lower crossbar, in internal position in comparison to the pivoting point of the first and the second lower crossbar with the first and second short front vertical tubular section, respectively.