Patent ID: 7686546

Claim:
Apparatus comprising: a service provider terminal including: a tubular first housing having a first longitudinal axis and defining a first interior area, wherein the first housing includes a carrier support member in the first interior area, wherein the first housing includes a first transfer opening therein, wherein the first transfer opening is adapted to enable access therethrough to a movable pneumatic carrier supported with the carrier support member; a first door assembly including a generally planar first door, wherein the first door is movable between a first closed position closing the first transfer opening and a first open position disposed from the first closed position, and a first air flow mechanism operable to control air flow into and out of the first interior area, wherein the first air flow mechanism includes at least one first valve opening extending through the first housing at a first valve location circumferentially spaced from the first transfer opening, wherein the first valve location is above the carrier support member, wherein the first air flow mechanism includes a first gate assembly including a generally planar first gate member selectively movable into and away from a first blocking position, wherein, in the first blocking position, the first gate member is operable to generally prevent air flow through the at least one first valve opening.