124 results about "Door threshold" patented technology

A threshold assembly for use with an entryway disposed within an aperture of a structure, which has an exterior and an interior and includes a door panel moveable between open and closed positions, includes a sill and a rail. A rail is rotatably supported above the upper sill surface between an initial position when the door panel is in the open position, and a second position different from the initial position when the door panel is in the closed position. A biasing member is disposed between the upper sill surface of the sill to bias the rail from the second position toward the initial position. A protrusion extends from the sill towards the rail, with the protrusion configured to rotatably support the rail and configured to prevent the biasing member from rotating the rail beyond the initial position.

The invention discloses a uniformly-locked sealed protection door with a transition threshold comprising a door fan, a door frame and locking mechanisms. The door frame is set in walls; the door fan is connected with the walls through hinges and can be closed into the door frame through the locking mechanisms; the door frame is symmetrical, effectively enhancing the strength of the structure, andcan be adapted to install two door fans where needed; a transition door frame is set at the lower part of the door frame to make up for the defects of complex structure and poor protection effect of existing door frames; uniform locking structure is used to make the door fan under uniform force and, together with horizontally moving hinges, make the door fan and the door frame parallel, effectively enhancing the sealing and protection effects; the uniform locking structure and the horizontally moving hinges working together also effectively avoid the situation where the door fan rebounds underimpact and causes damages to the hinges so the door cannot open; and two sets of seals are arranged between the door fan and the door frame to enhance the sealing effect. The invention has the advantages of good sealing and protection effects, stable and reliable overall structure, convenient installation and good locking effect.

The disclosure concerns a door assembly for a walk-in bathtub that includes a door that fits within a door threshold in the wall of the walk-in tub. The door assembly further comprises a hinge assembly that includes a first axis mount coupled to the door threshold and a second axis mount coupled to the outer side of the door. A double axis hinge is coupled to both axis mounts, to thereby connect the door to the bathtub. The double axis hinge is able to open the door towards the inside of the tub by pivoting about the first axis toward the inside of the bathtub as the door in turn counter rotates about the second axis at the distal end of the hinge, in the direction opposite to that of the hinge.

The door operating system of the present invention can be applied to new railcar or retrofitted to existing railcar designs. The hopper car will have a pair of doors on opposed sides of the center sill which are connected through a door spreader. The pneumatic, individual door operating system is connected to the door spreader through an adjustable spreader fulcrum in which the sliding adjustment may add in a proper connection force or tension between the door operating system and the individual doors.