Abstract: A stair assembly suited for a vehicle entrance includes a plurality of step treads, each of the step treads having a tread width, and a stringer to which the plurality of step treads are secured. The stringer is positioned within the tread width.

Abstract: A lift assist hinge for stowable stairs facilitates deployment and stowing. The lift assist hinge includes a mounting bracket securable to a door frame and including a mounting bracket hinge flange. A threshold plate is securable between the stringers and is pivotable with the stowable stairs. A threshold plate hinge flange connected between the threshold plate and the mounting bracket hinge flange is pivotable relative to the mounting bracket hinge flange. A cam slot is disposed in the threshold plate hinge flange, and a gas spring is connected at one end to the mounting bracket hinge flange and at an opposite end in the cam slot of the threshold plate hinge flange. The opposite end of the gas spring is displaceable in the cam slot.

Abstract: An operating mechanism for a ramp door includes a door actuation system and a limit stop system. The actuation system is connected between the door and a frame or the vehicular structure directly and is operable to pivot the door between closed, deck, and ramp positions. The limit stop system selectively limits the pivoting of the door to a range between the closed and deck portion or to a range between the closed and ramp positions.

Abstract: A ramp door and door frame include a rail kit that deploys automatically when the door is opened and collapses automatically when the door is closed. The door is supported by a cable mechanism when the door is opened. The cable mechanism causes an end rail to pivot up and away from the door when the door is opened and down and toward the door when the door is closed. The end rail cooperates with a door frame to deploy flexible side barriers when the door is opened and to collapse the side barriers when the door is closed.

Abstract: A recreational vehicle (RV) includes a ramp door configurable as a ramp or as a patio deck. A stair is attachable to a side of the door. A railing extends about the perimeter of the door when in the deck configuration. First and second support cables may be connected between the door and the RV to support the door when in the deck configuration.

Abstract: A ramp door and door frame include a rail kit that deploys automatically when the door is opened and collapses automatically when the door is closed. The door is supported by a cable mechanism when the door is opened. The cable mechanism causes an end rail to pivot up and away from the door when the door is opened and down and toward the door when the door is closed. The end rail cooperates with a door frame to deploy flexible side barriers when the door is opened and to collapse the side barriers when the door is closed.

Abstract: An operating mechanism for a ramp door includes a door actuation system and a limit stop system. The actuation system is connected between the door and a frame or the vehicular structure directly and is operable to pivot the door between closed, deck, and ramp positions. The limit stop system selectively limits the pivoting of the door to a range between the closed and deck portion or to a range between the closed and ramp positions.

Abstract: A recreational vehicle (RV) includes a ramp door configurable as a ramp or as a patio deck. A stair is attachable to a side of the door. A railing extends about the perimeter of the door when in the deck configuration. First and second support cables may be connected between the door and the RV to support the door when in the deck configuration.

Abstract: A recreational vehicle (RV) includes a ramp door configurable as a ramp or as a patio deck. A stair is attachable to a side of the door. A railing extends about the perimeter of the door when in the deck configuration. First and second support cables may be connected between the door and the RV to support the door when in the deck configuration.

Abstract: A recreational vehicle (RV) includes a ramp door configurable as a ramp or as a patio deck. A stair is attachable to a side of the door. A railing extends about the perimeter of the door when in the deck configuration. First and second support cables may be connected between the door and the RV to support the door when in the deck configuration.

Abstract: A seal system for a bi-fold door having a first panel and second panel includes a first seal attachable to the first panel and a second seal attachable to the second panel. Each seal includes a mounting portion, a bulb portion, and a flap portion. When the bi-fold door is closed, the flap portion of the first seal overlies the second seal, and the flap portion of the second seal overlies the first seal.

Abstract: A seal system for a bi-fold door having a first panel and second panel includes a first seal attachable to the first panel and a second seal attachable to the second panel. Each seal includes a mounting portion, a bulb portion, and a flap portion. When the bi-fold door is closed, the flap portion of the first seal overlies the second seal, and the flap portion of the second seal overlies the first seal.