Abstract: A method of laser marking a work piece involves reproducing a pattern having a surface marked portion and a depth engraved portion from a digital image of the pattern. The grayscale shades of pixels in one portion of the image are adjusted while maintaining grayscale shades of pixels in the other portions of the image constant, wherein the adjusted grayscale shades of pixels corresponding to a surface marked portion are within a first range and the adjusted grayscale shades of pixels corresponding to a depth engraved portion are within a second range separate from the first range. The modified image is converted to a computer readable code, such that the first and second ranges of grayscale shades are associated with surface marking and depth engraving ranges of laser power settings. A laser marking apparatus is then operated in accordance with the computer readable code to laser mark the work piece.

Abstract: A portion of the linseed oil ingredient used in fiberglass composite stains is replaced with a modified Cashew Nut Shell Liquid (CNSL) resin. As a result, the drying time of the stain is shortened considerably yet is still long enough to allow working of the stain into the composite for developing a simulated wood appearance.

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.

Abstract: A portion of the linseed oil ingredient used in fiberglass composite stains is replaced with a modified Cashew Nut Shell Liquid (CNSL) resin. As a result, the drying time of the stain is shortened considerably yet is still long enough to allow working of the stain into the composite for developing a simulated wood appearance.

Abstract: A high performance door comprising a door shell having a generally planar construction with marginal edges and at least one door skin helping to define an interior door cavity and a door member disposed within the interior door cavity is disclosed. The door member is preferably constructed of a gas-entrained cementitious material and has a compressive strength of at least about 30 lbf/in2 when measured using ASTM C-39. A method for forming a door member for use in construction with the door generally comprising: providing a door shell, placing the door shell in a fixture, filling the interior door cavity with a gas-entrained cementitious material, green-strength curing the gas-entrained cementitious material, and removing the door shell from the fixture is disclosed. The cured gas-entrained cementitious material provides a gas-entrained cementitious core for use in conjunction with a door.

Abstract: A door sill assembly is provided with an adjustable threshold. A sill assembly is made up of an elongated metal frame for installation on the floor of the doorway. The metal frame is provided with a tongue and sloping sill portion, a vertically extending rib and a shelf located below and integrally oriented relative to the rib. The threshold rail is supported on the frame member shelf portion upon two adjustable feet for varying the relative height level of the rail. A plastic threshold cap is sized to fit over the threshold rail and includes a pair of downwardly spaced ribs sized to securely fit over the vertical rib of the frame member to locate the threshold cap and rail relative to the frame member while providing limited vertical adjustment. Preferably, the interior trim molding is provided which is fixed relative to the frame member and oriented inboard of the threshold cap.

Abstract: A system for evaluating the head-up display aperture of a vehicle windshield with respect to established optical standards, independently of the projection system with which it is to be utilized. A fixture is provided for mounting a windshield in a predetermined position. An object plate having a series of accurately spaced parallel slits therethrough is positioned so that a light source positioned behind the object plate directs a series of narrow elongated light beams corresponding to the slits against the interior surface of the windshield within the display area. A line scan camera array system scans the display area and produces signals indicative of the apparent positions of the primary and secondary images of the beams reflected by the opposite surfaces of the windshield. The signals are transmitted to and stored within a computer system as a measured data base or map.