A roll-up door assembly including a plurality of door panels; a pneumatic seal apparatus having an elastic membrane of an elongated tube disposed around a perimeter of the trailer door so as to be adjacent to the plurality of door panels, wherein pressurized air is injected into the pneumatic seal apparatus to expand the elastic membrane and to apply an outward force against multiple sides of the plurality of door panels, wherein applying the outward force against the plurality of door panels on multiple sides keeps the plurality of door panels as a single unit such that substantially less air flows through the plurality of door panels than prior to the application of the outward force to seal the trailer door.

A vehicle-building docking system and a method of controlling the same include a lower weather strip coupled to a lower door frame, an upper weather strip coupled to an upper door frame and configured to slide upwards or downwards together with the upper door frame with respect to the lower weather strip, and a sealing tube provided between the lower weather strip and the upper weather strip and configured to inflate after the upper weather strip slides upwards or downwards to seal the gap between the lower weather strip and the upper weather strip.

A vehicle-building docking system and a method of controlling the same include a lower weather strip coupled to a lower door frame, an upper weather strip coupled to an upper door frame and configured to slide upwards or downwards together with the upper door frame with respect to the lower weather strip, and a sealing tube provided between the lower weather strip and the upper weather strip and configured to inflate after the upper weather strip slides upwards or downwards to seal the gap between the lower weather strip and the upper weather strip.

A sealing structure of an active weather strip is arranged such that a nozzle resin is mounted in an air injection hole connected to an air chamber formed inside the weather strip in the shape of a closed type ring, and an air control module is connected to the nozzle resin through an air hose. In response to driving conditions of a vehicle, air is injected into or discharged from the air chamber inside the weather strip by an air control module to adjust a reaction force of the weather strip, so as to improve door closing characteristics and minimize an inflow of wind sounds while maintaining airtightness even at a high pressure.

A sealing structure of an active weather strip is arranged such that a nozzle resin is mounted in an air injection hole connected to an air chamber formed inside the weather strip in the shape of a closed type ring, and an air control module is connected to the nozzle resin through an air hose. In response to driving conditions of a vehicle, air is injected into or discharged from the air chamber inside the weather strip by an air control module to adjust a reaction force of the weather strip, so as to improve door closing characteristics and minimize an inflow of wind sounds while maintaining airtightness even at a high pressure.

A control system of a recreational vehicle includes a controller, a power source configured to provide electrical power to the controller, and an actuator operably coupled to the controller. The actuator is configured to controllably move a slide out assembly between a closed position and an open position. The control system includes a seal assembly having an inlet. A fluid pressure device is operably coupled to the controller and is fluidly coupled to the inlet of the seal assembly. The controller is configured to operably control the fluid pressure device to pressurize the seal assembly when the slide out assembly is in the closed position.

A control system of a recreational vehicle includes a controller, a power source configured to provide electrical power to the controller, and an actuator operably coupled to the controller. The actuator is configured to controllably move a slide out assembly between a closed position and an open position. The control system includes a seal assembly having an inlet. A fluid pressure device is operably coupled to the controller and is fluidly coupled to the inlet of the seal assembly. The controller is configured to operably control the fluid pressure device to pressurize the seal assembly when the slide out assembly is in the closed position.

A window seal with ventilation function is provided and a method for the interior ventilation of motor vehicles is also provided.

A window seal with ventilation function is provided and a method for the interior ventilation of motor vehicles is also provided.