Abstract: The power supply, well suited for powering a metal halide lamp, includes a rectifier with an AC input and a DC output. A power transformer has its primary winding connected to the DC output and its secondary winding connected to the lamp. A pulse-width-modulated (PWM) controller is coupled to the primary winding for controlling the flow of power therethrough. A smoothing circuit is connected to the lamp for reducing the rate of change of the current flowing through the lamp. Avoiding filtering of the rectifier output, maintaining a constant pulse width of the PWM controller throughout the period of the AC input power and filtering switching-frequency current components from the input to the rectifier provides a sinusoidal input current to the power supply which is substantially in phase with the input voltage. Such supply has a power factor of over 99%.

Abstract: An insulated container assembly (10) includes a container base (12) having a front (14) and upper (16) and lower (17) rear wall, bottom (18), and side walls (20) and a lid (22) sized to conform to the container base (12). The insulated container assembly (10) also includes a handle assembly (24) which is pivotably secured to the container rear wall (16) and rotates approximately 180 degrees between an extended operative position and a retracted non-operative position. The single member wheel assembly (26) may be secured to the insulated container (10) such that it is substantially confined by the side (20) and lower (17) and upper (16) rear walls of the insulated container (10).

Abstract: The invention is a two-part adhesive containing as a first part:A. a polyurethane prepolymer having reactive isocyanate moieties;and a second partB. a curative composition containingi) a polyurea, comprising the reaction product of a polyamine and a polyisocyanate, dispersed in a polyether polyol-based polyurethane prepolymer having reactive hydroxyl moieties, and optionally a plasticizer;ii) a compound having at least one oxazolidine moiety capable of reacting with an isocyanate under curing conditions; andiii) a catalyst capable of catalyzing the reaction of isocyanate and hydroxyl moieties in the presence of moisture.

Abstract: A surgical suit includes a hood fitted loosely about the user's head and a gown fitted loosely about the user's body. The hood has a large visor through which the user can see. A housing is spaced above the user's head and underneath the hood. The housing carries a substantial portion of the weight of the hood. The housing is supported above the user's head by means of vertically extending support rods that are connected to a backpack. A fan is disposed in the housing, as well as an optional thermoelectric module. An exhaust fan is included as part of the backpack. The fan in the housing causes air to be drawn through a filter and then flowed past the user's face. The fan in the backpack causes air to be drawn downwardly from around the user's upper body and exhausted from the gown through a filter.

Abstract: Described herein is a polyurethane sealant composition comprising (1) a urethane prepolymer having an isocyanate functionality of at least about 2.0 and a molecular weight of at least about 2,000; and (2) the reaction product of a secondary amino- or mercaptoalkoxy silane and a polyisocyanate having an average of at least one silane group and at least one isocyanate group per molecule and a molecular weight of less than about 2,000. The sealant composition of the invention is particularly useful in bonding glass to metal substrates when the glass substrate has not been primed with an application of a separate primer composition prior to the application of the sealant.

Abstract: A prefabricated vehicle window having an exterior molding is prepared by (a) placing a protective film inside a glass support fixture having a cavity to line the cavity; (b) depositing a bead of a first hardenable polymeric material (first bead) on top of the protective film in an amount sufficient to fully cover the marginal edges of the outer surface of a glass sheet subsequently placed on the glass support fixture; (c) placing a glass sheet having exposed side surfaces, inner surface and outer surface on the glass support fixture, with the outer surface facing toward the glass support fixture, and at least a portion of its periphery pressing against the first bead which causes the first bead to conform to the shape and contour of the film-covered glass support fixture cavity and cover the adjacent exposed marginal edges of the outer glass surface, and squeezes out any excess first bead over to the exposed side surfaces, thereby partially or fully covering the exposed side surfaces; and (d) depositing a bea

Abstract: Described herein is a one-part hot melt adhesive comprising the reaction product of: (a) a polyester polyol with an equivalent weight in the range of from about 250 to about 3,000; (b) a polyisocyanate; and (c) at least about 1 weight percent hydroquinone bis (2-hydroxyethyl) ether; wherein the isocyanate content of the resulting product is at least about 0.5 percent. Also described is a one-part hot melt adhesive comprising the reaction product of: (a) a polyether polyol; (b) a polyisocyanate; and (c) hydroquinone bis (2-hydroxyethyl) ether; wherein the isocyanate content of the resulting product is at least about 0.5 percent. It has been discovered that the compositions of the invention provide adhesives with increased resistance to softening at high temperatures (e.g., above about 70.degree. C.) after curing.

Abstract: A container (20) suitable for use as a truck box for a pick-up truck, includes a base container portion (21) having an open top, and a cover (22) to close the open top. The cover (22) is pivotally attached to the base (21) by hinge mechanisms (23) which are uniquely formed by combining a hinge pin assembly (101) with a pin retaining assembly (102). The cover (22) may also be latched to the base (21) by a latch assembly (24) which includes pivotable handles (56, 57) on each end of the base (21) which, when either is pivoted, rotates latch hooks (68, 74) from a position engaging the cover (22) to a position releasing the cover, without moving the other handle. The container (20) may also receive a tray (150) therein positionable on a ledge (30) and positively located in one direction by ribs (159) and in the other direction by feet (162) positioned in depressions (38) formed between ribs (37) on the inside of the base (21).