Use of high pressure low volume air conversion to low volume high pressure air to power patient transport devices

A method of providing air to a patient support device, the method comprising:

• converting relatively low-volume high-pressure air from a relatively low-volume high-pressure air source into relatively high-volume low-pressure air;
• receiving, at an air flow device, the relatively high-volume low-pressure air;
• and
• providing, with the air flow device, an air flow function to the modality with the relatively high-volume low-pressure air.

A method of providing an air flow function to a modality, the method comprising:

• converting relatively low-volume high-pressure air from a relatively low-volume high-pressure air source into relatively high-volume low-pressure air through a converter;
• expelling the high-volume low-pressure air through an outlet of the converter and generating a vacuum function at an inlet of the converter;
• and
• vacuuming air from an air flow device coupled to the converter, the air flow device being associated with the modality.