a pivot mechanism connected to said support platform so as to pivot said support platform around a pivot axis to move between a stored position and a deployed position in which the support platform supports said at least one individual or object c at least one flowable medium spring having a first end fixed relative to said vehicle and a second end fixed relative to said support platform at a location displaced from said pivot axis d each of said at least one flowable medium spring being arranged so as to impart an extension force that biases said support platform toward said deployed position and so as to impart an extension force that biases said support platform toward said stored position during at least portions of the movement of said support platform between said stored position and said deployed position application_number US 8681605 A description while the present invention may be embodied in many different forms a number of illustrative embodiments are described herein with the understanding that the present disclosure is to be considered as providing examples of the principles of the invention and that such examples are not intended to limit the invention to preferred embodiments described herein and or illustrated herein with reference to the figures fig1 is a right front perspective view showing an illustrative spring supported sleeper bunk 100 in both a lowered or deployed position 100 d and in a.