Thermo King Corporation

Robert L Sirotek, Jr

Randal W Gast

Kevin W Kiefer

David B Ziegler

Gregg George

Pat Hotch

An air return bulkhead comprising a base; a return air duct extending outward from the base, the base and air duct defining a bulkhead return air chamber, the duct comprising a first wall, a second wall, a third wall, a fourth wall, and a fifth wall joining the other walls; at least one return air inlet notch formed in the air duct fourth and fifth walls; and means for producing turbulent return air flow through the return air chamber, said means located downstream from the at least one inlet notch. The bulkhead further includes air dam positioning means on the first and second walls. Individual air dam members are slid in the positioning means to be removably mounted along the bulkhead.

Air return bulkhead for temperature controlled trailers

A dual use kit of structural members, and method of using the kit to perform different functions during shipment and use of a transport refrigeration unit. Structural members of the kit initially form a shipping crate for a transport refrigeration unit, for protecting the transport refrigeration unit during shipment from a manufacturer to a user. The transport refrigeration unit is mounted on the outer surface of a predetermined trailer wall such that the return air plenum extends into a conditioned space defined by the trailer. Structural members of the shipping crate are convertible by the user to form an air return bulkhead adjacent to an inner surface of the predetermined wall of a trailer, to direct trailer air into the return air plenum of the transport refrigeration unit.

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Apple Valley, MN, United States of America

Robert L Sirotek, Jr