Abstract: A method of adhering roof tiles to a roof utilizes a one-component adhesive and in particular, a one-component polyurethane adhesive foam applied to the undersurfaces of the roof tiles in a discontinuous patterns. The adhesive is applied in the form of separate deposits at opposing corners of the undersurfaces of the roof tiles and the roof tiles are laid on the roof in serial fashion and overlapping courses.

Abstract: The present invention discloses a foam frothing alternative for blowing or frothing single component foams using gases which are incapable of being liquified within the limits of DOT aerosol cans, referred to herein as non-liquefiable gases. In this invention, it is demonstrated that non-liquefiable gases such as CO.sub.2 and N.sub.2 O can be used to provide foams using conventional single component foam chemical raw materials. The present invention provides an adhesive/sealant, expanded by a non-liquefiable gas propelled from a container initially and expanded by a blowing agent consisting primarily or exclusively of a non-liquefiable gas and formulated from a moisture curable polyurethane prepolymer using a low molecular weight isocyanate of two or more functionality. In one or more variations, the compositions of the present invention contain solubility enhancers for non-liquefiable gases such as CO.sub.

Abstract: A dispensing gun for fluent products such as viscous adhesives and sealants. The gun includes a removably mounted nozzle and fittings for attachment to a product source such as a can or a hose. A valve body has product inlet and outlet passages with flow being controlled therethrough by a valve that includes a nose portion seated in the valve body, and a rod that extends through the nose portion of the valve and seats on tapered surfaces inside the end of the nozzle. The valve contains a shrouded internal spring biasing the valve to a closed position. A trigger engages the yoke carrying the valve and the valving rod and moves the yoke so that the rod and valve move between open, closed and intermediate positions. In one preferred form, the valving rod may be adjusted between positions wherein more or less product is dispensed in response to full trigger movement.

Abstract: A dispensing gun for fluent products such as viscous adhesives and sealants. The gun includes a removably mounted nozzle and fittings for attachment to a product source such as a can or a hose. A valve body has product inlet and outlet passages with flow being controlled therethrough by a valve that includes a nose portion seated in the valve body, and a rod that extends through the nose portion of the valve and seats on tapered surfaces inside the end of the nozzle. The valve contains a shrouded internal spring biasing the valve to a closed position. A trigger engages the yoke carrying the valve and the valving rod and moves the yoke so that the rod and valve move between open, closed and intermediate positions. In one preferred form, the valving rod may be adjusted between positions wherein more or less product is dispensed in response to full trigger movement.

Abstract: A twist lock system for a dispensing container which includes a locking ring for a pressurized container, a dispensing gun having a combination twist lock and valve actuating system including two pairs of radially and circumferentially spaced locking lugs cooperating with slots and the locking ring, an axially movable valve stem positioned in a body secured to the container end and a valve capturing and actuating surface formed on the dispenser gun, with the components constructed and arranged so that the valve cannot be actuated unless the container and gun are properly positioned.

Abstract: A combination chemical dispensing apparatus and dispensing gun. The apparatus includes a first master container having at least one flexible wall product container and a head space between the product container and the first master container, a gas-generating apparatus including a second master container receiving a first fluent substance and a second fluent substance in a second container and a product dispensing gun including valves for controlling liquid and gas flow therethrough, with fluid-tight connections arranged to permit fluid flow from the product container to the gun and gas flow from the second master container to the first master container and to the gun.

Abstract: A multiple adhesive bead applicator has a handle member and a cross member. A network of adhesive distribution tubes is attached to the application and extends from the handle member to multiple distribution points in a preselected spacing on the cross member. Such an application is useful in a method for applying a cover member, such as an elastomeric membrane or insulation board, to a roofing substrate by first positioning the membrane adjacent a work area, then dispensing multiple beads of an adhesive onto the substrate in a preselected spacing and in a single pass and contacting the adhesive beads with the cover member.

Abstract: A foam dispensing apparatus particularly suited for consumer use includes two replaceable foam supply containers held within a carrier assembly and interconnected to a dispenser by way of a pair of flexible material supply tubes. The apparatus includes an actuating assembly by which both supply container valves may be opened in unison.

Abstract: A hand held dispenser for chemical foam compositions having enhanced service life and being capable of delivering higher outputs of foam products is provided. In accordance with the invention, a dispenser cartridge is mounted in sealed movable relation to a cartridge carrier. Reliable face to face compressible seals are employed to accomplish primary porting to pressurized sources of chemical components. The dispenser cartridge does not rely on a sealed interface between a cylindrical valving rod and a dimensionally unstable TEFLON.RTM. bushing for porting which provides improved sealing performance. Multiple porting from two or more pressurized sources of chemical components is also facilitated by the sliding seal feature.

Abstract: A method for forming a temporary seal between a roof substrate and a flexible membrane is disclosed. At the end of a work day, the roofing membrane is folded upon itself along a foldline to define a leading edge of the membrane. An expandable polyurethane foam is injected into the interface formed between the membrane leading edge and the roof substrate. The foam is allowed to expand into a wedge shape and adhere to the membrane leading edge and roof substrate. After it cures, the foam wedge is substantially impervious to water and moisture migration. When work is resumed, the membrane is peeled away from the formed wedge, preferably at an angle, and the existing roof substrate is removed.

Abstract: New and improved foam cushions for packaging purposes of the type including a cushion envelope partially filled with an expandable cushioning foam material are provided. The cushion envelope includes a foam-receiving cavity and is defined by a unitary web of material folded over itself to provide a folded side. An intermittent labyrinth side seam is provided along the side opposite the folded side and transverse top and bottom seams are provided to complete formation of the cushion envelope. A cushioning foam is disposed in the foam-receiving cavity. A method for making the foam cushions and an automated apparatus for making a continuous supply of the packaging cushions are also described.

Abstract: A mixing and dispensing nozzle adapted for attachment to an associated two or more component liquid dispensing gun for mixing and dispensing liquid foamable products which use reduced HFC, CFC or non-CFC or HFC foaming agents. The nozzle includes an internal mixing chamber having a mixing chamber outlet member which provides an outlet for foam mixed within the nozzle mixing chamber. The outlet tube has a tip portion with a re-entrant portion which extends rearwardly to define a generally V-shaped groove having an included angle.

Abstract: According to the present invention, a gun is provided which has a valve assembly receiver and a product discharge valve assembly which are adapted to cooperate with each other and which may be readily and accurately secured together in a fast, fool proof manner. The product discharge valve assembly may be readily removed by hand without the use of tools, and misalignment between the inlet passages on the valve assembly and the outlet passages in the gun body are eliminated. The outlet and inlet ports respectively are aligned securely and positively by the combination of a V-grooved self-centering arrangement on the receiver and a counterpart arrangement on the discharge valve assembly. In a preferred embodiment further cooperating alignment is provided by a locking stud unit.

Abstract: New and improved foam cushions for packaging purposes of the type including a cushion envelope partially filled with an expandable cushioning foam material are provided. The cushion envelope includes a foam-receiving cavity and is defined by a unitary web of material folded over itself to provide a folded side. An intermittent labyrinth side seam is provided along the side opposite the folded side and transverse top and bottom seams are provided to complete formation of the cushion envelope. A cushioning foam is disposed in the foam-receiving cavity. A method for making the foam cushions and an automated apparatus for making a continuous supply of the packaging cushions are also described.

Abstract: According to the present invention, a gun is provided which has a valve assembly receiver and a product discharge valve assembly which are adapted to cooperate with each other and which may be readily and accurately secured together in a fast, foolproof manner. The product discharge valve assembly may be readily removed by hand without the use of tools, and misalignment between the inlet passages on the valve assembly and the outlet passages in the gun body is eliminated. The outlet and inlet ports respectively are aligned securely and positively by the combination of a V-groove self-centering arrangement on the receiver, a counterpart arrangement on the discharge valve assembly, and a cooperating alignment on the discharge valve assembly, and a cooperating alignment and locking stud unit.

Abstract: A gun having a gun body which includes a housing for component inlet and outlet passages and for a product flow control valve, which further includes a handle, a nozzle receiver assembly, and a trigger for rotating a spool valve between open, closed, and intermediate positions, and wherein means are provided for controlling the proportion and flow rates of the components within the flowing passages, and to facilitate insertion, locking, and ejection of the nozzle within the gun body.

Abstract: A gun having a gun body which includes a housing for component inlet and outlet passages and for a product flow control valve, which further includes a handle, a nozzle receiver assembly, and a trigger for rotating a spool valve between open, closed, and intermediate positions, and wherein means are provided for controlling the proportion and flow rates of the components within the flowing passages, and to facilitate insertion, locking, and ejection of the nozzle within the gun body.

Abstract: An expansion control mixing and dispensing nozzle adapted for attachment to an associated two-component liquid dispensing gun for mixing and dispensing liquid foamable products. The nozzle includes a mixing chamber, a mixing chamber outlet tube and an outlet tube cover arranged in co-axial relation. The outlet tube cover including an outlet slot or passage in its outer end portion; its inner end surrounds a part of the mixing chamber outlet tube so as to define an annular auxiliary chamber therebetween. The mixing chamber has spaced apart inlet ports for receiving individual liquid components and a baffle or the like to impart a swirling action to the components as they expand in the mixing chamber, a pre-discharge chamber lies between the outlet slot and the end of the outlet cover.