TROLLEY FOR PORTABLE STRETCHERS Russian patent published in 2015 - IPC A61G1/00 

FIELD: transport.

SUBSTANCE: claimed appliance can be used for transportation of invalids and wounded personnel both directly and at ambulances. It comprises bearing frame with delivery rollers and two wheel supports mounted at said frame to turn thereat. Every wheel pair is locked in unfolded position with the help of a brace articulated with both said frame and appropriate support at its lower part. Said brace is composed of two articulated links provided with thrusts arranged in common joint zone. Torsion spring locking the as-unfolded brace acts on upper link. To fold said wheel supports this trolley incorporates the wheel support manual and automatic unfolding mechanisms. Note here that automatic unfolding mechanism allows the stretcher trolley to roll on delivery device without application of manual unlocking levers. Said automatic unfolding mechanism includes two bell cranks articulated with wheel supports. Long arms of said bell cranks are configured so that at unlocked position their front edges are aligned with wheel support front edges. Short arms of said bell cranks support links with opposite ends composed of lengthwise crank and coupled with pins fitted at the brace lower links at their lower part. At rolling on, delivery device flute interacts with bell crank for it to act via link to said brace for it to be unlocked. Now, wheel support is folded.

EFFECT: invention raises the safety of patients and comfort of ambulance crew work.

3 cl, 10 dwg