Abstract: A method of and system for preventing particulate matter, such as debris, precipitation, and condensation from occupying a space or accumulating upon a surface by directly engaging the surface or creating an air-curtain effect adjacent the space utilizing a selectively actuated gaseous flow.

Abstract: Methods and apparatus are provided for the detection of conditions indicative of a wind pressure pulsation within the passenger cabin of a vehicle, and for the reduction of the intensity of the pressure pulsation via automatic window repositioning. The apparatus comprises vehicle sensors for detection of a pressure pulsation condition, controllers to process sensor data and issue commands, and power-operated vehicle windows.

Abstract: A mobile medical unit (10) has interior space divided into a service compartment (24), a treatment compartment (26), an entryway compartment (28), and a storage compartment (30). An interior door (52) controls passage of persons between the entryway compartment (28) and the treatment compartment (26), an exterior door (58) controls passage of persons between the entryway compartment (28) and space outside of the medical unit (10), and an opening (64) is formed between the entryway compartment (28) and the storage compartment (30) for retrieval and replenishment of supplies. The interior door (52) and the exterior door (58) form between them an air lock to help maintain an aseptic condition within the treatment compartment (26). However, the interior door (52) is oriented at an acute angle with respect to the exterior door (58) to provide an auxiliary exit for recumbent patients along a smooth curved passageway (94).