1
Raymond G Ragan, James G Stephenson, Charles L Zuck: Patient warming or cooling blanket. Progressive Dynamics, Beaman & Beaman, June 30, 1992: US05125238 (141 worldwide citation)

A disposable patient heating or cooling blanket having three layers of flexible sheeting two of which form an air chamber, the third of which is a comfortable layer for contact with the patient and which, having a greater friction characteristic, aids in keeping the blanket in place on the patient. ...


2
Thomas H Phlipot, Raymond G Ragan, Joseph A Namenye, James G Stephenson: Thermal blanket with central air inlet. Progressive Dynamics, Young & Basile P C, March 17, 1998: US05728145 (16 worldwide citation)

A thermal blanket for flowing temperature controlled air upon a patient wherein the blanket is inflated with air and orifices within the blanket permit the air to flow upon the patient. The improvement includes the locating of the air inlet at a central blanket location in the patient's chest region ...