Abstract: A method and system for executing an item transaction between a first endpoint and a second endpoint employ a transaction application running on a computing device. The item may be any suitable item, such as a vehicle, and the computing device may be any suitable device having a graphical user interface and one or more input functions. The method and system entail receiving item data at the transaction application from the first endpoint and preparing a listing associated with the item at the transaction application and exposing the listing while omitting a contact channel. After a verification and compensation process are executed relative to the item and the first endpoint, then a contact channel is opened between the first endpoint and the second endpoint so as to enable communications between the first endpoint and the second endpoint.

Abstract: A box (10) for safe stowage of a flight crew oxygen mask (16) having an inflatable harness (35) and a switch-on/switch-off comfort adjustment system is provided which ensures that the mask (16) is properly stowed only when the switch member (40) controlling the comfort adjustment system is shifted to the switch-off or "emergency" position. The box (10) is preferably designed for mounting on the cockpit floor within close proximity to the intended wearer for one-handed retrieval of the mask (16) from within the box (10) and includes walls (24-32) defining an enclosure for receiving the mask (16), an apertured top cover (18) permitting a portion of the mask (16) to protrude therethrough for ready access by the wearer, and two inwardly extending abutment elements (20, 22) attached to opposing walls (24, 26) of the box.

Abstract: The microphone of a breathing mask such as an aircraft flight crew oxygen mask is disabled during inhalation to prevent transmission of air flow sounds. In the preferred embodiments, selected mechanisms determine when breathable gas has been delivered to the mask and in response, disable the microphone by disconnecting it during this time. In another embodiment, a cover shifts into position over the microphone to prevent or reduce reception of sounds thereby during delivery of gas to the mask.