Abstract: A pressure relief valve (12) for relieving air pressure from a passenger compartment (14) of a vehicle (10) includes a base (18) having a central portion (26) and a peripheral portion (28). A plurality of openings (46) extends through the base (18) and a plurality of flaps (60) closes the openings (46). Each flap (60) is associated with at least one opening (46). An inner end (66) of each flap (60) connects with the central portion (26) of the base (18). An outer end (68) of each flap (60) is movable relative to the central portion (26) of the base (18) and the other flaps for enabling airflow through the at least one associated opening (46). The pressure relief valve (12) further includes a connector (22) on the base (18) that is configured for securing the pressure relief valve (12) to the vehicle (10).

Abstract: An apparatus (10) for transporting laboratory animals comprises a container (12), a cover piece (14), and a closure piece (16). The container (12) has an open top. The cover piece (14) is connectable with the container (12) for closing the open top of the container (12). The cover piece (14) has a passage (188) through which the at least one laboratory animal passes during insertion into and extranction from a cavity (28). The closure piece (16) includes a portion (234) that is rotatable relative to the cover piece (14) between a first position in which the portion (234) of the closure piece (16) closes the passage (188) in the cover piece (14) and a second position in which the passage (188) in the cover piece (14) is open to permit the insertion and extraction of the at least one laboratory animal through the passage (188).