Hospital bed elevators which have a regenerative converter reduce CO2 emissions by 1400 kg per year, an energy saving effect of up to 35%. The regenerative converter is able to decrease harmonic currents. There are two models of elevator to choose from. The B750 has the capacity to hold most types of medical equipment and hospital beds while the larger B1000 has more space, enabling it to hold two stretchers. If physical contact is made between the elevator doors and a person or an object then a mechanical safety device is activated by a micro-switch which reverses the closing doors.