Abstract: A carrier for transporting articles through pneumatic tube systems is disclosed. The carrier has first and second shells disposed about a longitudinal axis and connected by hinges such that the shells are moved transversely relative to one another when opening and closing the carrier. A seal such as a gasket or rubber seal is included within the interior of the carrier. Optionally, a sensor is used to indicate the presence of an abnormal condition within the carrier. Optionally, a lock is used to prevent opening.

Abstract: An ice preventing device for use with an outside gas pressure regulator that has a pressure vent and a downwardly opening vent tube. The device includes a skirt connected to and surrounding the vent tube. The upper end of the skirt has an opening that communicates with the passage in the vent tube. The skirt also has an enlarged, flared-out lower end with an opening substantially greater than the area of the opening at the upper end. Located within the skirt is a baffle positioned in a generally horizontal plane. The baffle is positioned below the vent tube opening of the pressure regulator to prevent rain or freezing rain from splashing back upwardly into the passage.

Abstract: A carrier for transporting articles through pneumatic tube systems is disclosed. The carrier has first and second shells disposed about a longitudinal axis and connected by hinges such that the shells are moved transversely relative to one another when opening and closing the carrier. A seal such as a gasket or rubber seal is included within the interior of the carrier. Optionally, a sensor is used to indicate the presence of an abnormal condition within the carrier. Optionally, a lock is used to prevent opening.