Abstract: A seat assembly includes a seat and a headrest connected to the seat and movable between a first position and a second position with respect to the seat. The seat assembly also includes a biasing element biasing the headrest toward the second position. A releasable headrest restraining mechanism restrains the headrest in the first position when the seat is unoccupied and releases the headrest to permit movement of the headrest via the biasing element to the second position when the seat is occupied. A method of moving the headrest is also provided.

Abstract: A pressure relief valve (10) includes a housing (12) with a peripheral side wall defining at least one central airflow passage and at least one flap valve element (14). The housing (12) and the flap valve element (14) have a molded connection for enabling rotation of the flap valve element relative to the housing between a closed condition overlying the at least one central airflow passage (24) to prevent airflow from atmosphere (21) into the passenger compartment (19) and an open condition permitting airflow out of the passenger compartment of the vehicle to atmosphere. The at least one flap valve element (14) moves from the closed condition to the open condition in response to differential pressure between the passenger compartment (19) and atmosphere (21).

Abstract: A cabinet catch (10) consists of an integrally molded plastic clip (14) and bracket (12) for mounting to a portion of a cabinet structure. The clip (14) is manufactured from a first plastic material. The clip (14) is rotatable relative to the bracket (12) about an axis of rotation (20). The bracket (12) is formed from a second plastic material different from the first material. The first and second plastic materials are dissimilar to each other so they do not bond to each other. A method of manufacturing the cabinet catch (10) includes the steps of injection molding the clip (14) with a first plastic material and then injection molding the bracket (12) with a second plastic material different from the first plastic material so that the clip and the bracket (12) are integrally molded.

Abstract: Impact type gas-particle separation is applied to ultra-fine particles by judiciously altering the aerodynamic drag on the particles with respect to their inertia by operation at sub-atmospheric pressures. An impact separator has a housing having a channel in which particles flow in a fluid such as air, a purified gas or mixtures thereof A plurality of blades are placed in the channel for affecting the motion of the particles and the fluid with respect to each other. A second channel branches from the first channel to receive particles diverted and separated from the flow of the fluid in the first channel. A flow mechanism creates a sub-atmospheric pressure in the channel.

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: A pressure relief valve (12) for relieving air pressure from a passenger compartment (14) of a vehicle (10) includes a base (18) having a peripheral portion (30). A central opening (42) extends through the peripheral portion (30). The pressure relief valve (12) also includes a plurality of flaps (74) for closing the central opening (42) of the base (18). Each flap (74) has an outer end (82) connected with the peripheral portion (30) of the base (18) and an inner end (80) that is movable relative to the peripheral portion (30) and the other flaps (74) for enabling airflow through the central opening (42). Each flap (74) has opposite surfaces (76 and 78) against which air pressure acts. Differential air pressure acts on the opposite surfaces (76 and 78) causing the flap (74) to move to enable airflow through the central opening (42).

Abstract: A method for analyzing the immunosuppressant activity of Kv1.3 inhibitors using the mini- and micro-pig. These pig models have been found to have K.sub.v 1.3 channels very similar to man both in function and setting of membrane potential of T-lymphocytes, and respond similarly in a mixed lymphocyte reaction (MLR) to the K.sub.v 1.3 channel blockers. The mini-pig and micro-pig provide useful in vivo animal models for studying the immunosuppressant activity of Kv1.3 channel blockers that would be expected to function in man.