Abstract: A door assembly with improved sealing between the door and door frame. The door assembly may include a door frame having a first side section and a sill section, a door including a first edge surface and a second edge surface and a hinge having a first portion connected to the first side section and a second portion connected to the first edge surface to pivotably connect the door to the door frame such that the door is pivotable between an open position and a closed position, wherein the hinge moves the second edge surface vertically downward toward the sill section only during the last 50 degrees of pivotal movement of the door from the open position to the closed position.

Abstract: A door assembly includes a door frame and a door coupled to the door frame and movable between an open and closed position. The door includes a first surface that faces in a first direction and a second surface that faces in a direction that is greater than 90 degrees from the first direction. The door assembly also includes a securing member pivotably mounted to the door frame and pivotable between a first position, in which the securing member prevents the door from moving to the open position, and a second position, in which the securing member releases the door, wherein the securing member is configured to engage both the first surface and the second surface when the securing member is in the first position.

Abstract: Provided herein is a composition comprising from 50% to 60% polysiloxane consisting essentially of polyphenylmethylsiloxane and ?,?-methoxy-terminated polydimethylsiloxane, from 40% to 50% organic solvent, from 2% to 4% polysilazane, and polysilane of a formula (R1R2Si)n, wherein n is greater than 1, and wherein R1 and R2 are the same or different and are alkyl, alkenyl, cycloalkyl, alkylamino, aryl, aralkyl, or alkylsilyl. The composition, after curing, is a flame resistant binder for forming a composition-fiber composite that withstands repeated temperatures over 1800° F. The composition may further comprise from 0.1% to 2% of an enhancer selected from butyltitanate and aminoethylaminopropyltrimethoxysilane (H2NC2H4NHC3H6—Si(OCH3)3). The composition may be mixed with fibers in a ratio of 35:65 to 45:55 (w/w), and the composition-fiber mixture may be cured under vacuum at a temperature of 200° F. to 450° F. for 30 minutes to 180 minutes to form a composite.

Abstract: A door assembly with improved sealing between the door and door frame. The door assembly may include a door frame having a first side section and a sill section, a door including a first edge surface and a second edge surface and a hinge having a first portion connected to the first side section and a second portion connected to the first edge surface to pivotably connect the door to the door frame such that the door is pivotable between an open position and a closed position, wherein the hinge moves the second edge surface vertically downward toward the sill section only during the last 50 degrees of pivotal movement of the door from the open position to the closed position.

Abstract: A door assembly including a door frame, a door coupled to the door frame such that the door is pivotable between an open position and a closed position, and a seal attached to one of the door or the door frame for providing a seal between the door and the door frame, wherein the seal has an inactive phase and an active phase providing superior sealing to the inactive phase, and wherein movement of the door from the open position to the closed position results in the seal changing from the inactive phase to the active phase.

Abstract: A door assembly includes a door frame and a door coupled to the door frame and movable between an open and closed position. The door includes a first surface that faces in a first direction and a second surface that faces in a direction that is greater than 90 degrees from the first direction. The door assembly also includes a securing member pivotably mounted to the door frame and pivotable between a first position, in which the securing member prevents the door from moving to the open position, and a second position, in which the securing member releases the door, wherein the securing member is configured to engage both the first surface and the second surface when the securing member is in the first position.

Abstract: A filled polyurethane foam that includes a closed-cell polyurethane matrix having a mineral filler dispersed therein, wherein the polyurethane foam has a density of from about 1.5 to about 3.0 pounds per cubic foot, is described. The filled polyurethane foam can be prepared by mixing a polyol component that includes a blowing agent and an isocyanate component under reaction conditions, wherein one or both of the polyol component and the isocyanate component include a mineral filler, and allowing the mixed components to expand and cure. The filled polyurethane foam can be used as a door core that includes less polyurethane than polyurethane door cores that lack the mineral filler.