Multiway Valve Or Single Operator For Plural Valves Patents (Class 239/414)
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Patent number: 4262847Abstract: A urethane foam gun is disclosed in which polyisocyanate and polyol feed streams are mixed with air under pressure within the gun with vigorous intermixing in the outlet nozzle to a condition ready for application. Once applied the foam polymerizes in place. The gun is formed with an integral block design in which dual plug valves are mounted for control of the streams. Actuation is achieved by a trigger valve mounted on the gun, and a second gun-mounted valve controls a solvent flush for cleaning to avoid polymerization within the gun itself. The gun is useful for foam-in-place applications, such as protective packaging.Type: GrantFiled: January 2, 1979Date of Patent: April 21, 1981Assignee: Witco Chemical CorporationInventors: Phillip L. Stitzer, Stephen A. Deutsch
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Patent number: 4197994Abstract: A spraying device for applying a coating material such as anticorrosion oil to the internal surfaces of hollow bodies comprises a spray gun provided with a front piece which is inserted into the hollow body during operation of the device. Furthermore, the device comprises a pump for feeding the spray material to the gun and a control device for controlling the gun, the pump and the introduction of compressed gas into the front piece. This gas is introduced in order to further atomize the spray material ejected through an atomizing nozzle of the gun and in order to support the transport of the spray material through the front piece. The control device comprises means for controlling the rate of introduction of spray material into the gun. As a consequence, the degree of atomization of the spray material leaving the front piece is variable.Type: GrantFiled: January 23, 1978Date of Patent: April 15, 1980Assignee: Atlas Copco AktiebolagInventor: Kurt H. Liedberg
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Patent number: 4194535Abstract: A tap for controlling a plurality of fluid circuits simultaneously, comprising a body provided with a bore into which the said circuits open, and a rotary control member.Each fluid inlet duct is provided with a valve member and the rotary control member is a stem, movable in translation, which is provided with cams and cut-aways and controls the opening and closing of the said valve members.The invention is applicable in particular to oxyacetylene torches.Type: GrantFiled: November 22, 1977Date of Patent: March 25, 1980Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des ProcedesInventors: Denis Galland, Jack Boursault
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Patent number: 4175706Abstract: A spray nozzle has a nozzle body defining therein a tubular chamber with an outer wall of generally circular cross-section. A generally coaxial discharge orifice at an end of this chamber has a bounding surface externally of the chamber which forms an included angle toward the chamber of less than 110.degree. with the axis of the chamber. Passage means are provided in the nozzle body to receive a flow of liquid to be sprayed and having an outlet arranged to discharge the liquid into the chamber as an annulus about the axis of the chamber. Means is provided for directing gas under pressure into the chamber in a flow path past the outlet and out the orifice, with any chamber wall portions defining the flow path between the outlet and the orifice being convergent toward the orifice in the direction of flow.Type: GrantFiled: July 18, 1977Date of Patent: November 27, 1979Assignee: Scientific Energy Systems CorporationInventor: Joseph Gerstmann
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Patent number: 4161289Abstract: An airbrush of the double action type has an elongated unitary body having an axial passage for longitudinal movement of a needle supported therein. The rear end of the needle is carried by a guide slidably supported in the axial passage and normally urged by a spring in a direction such that the tapered front of the needle enters and closes the jet. A finger-operated lever formed of plastic and shaped to provide a "living hinge" is supported in the body and arranged to engage the guide and move the needle against the action of the spring to control paint flow, and at the same time to open a valve to allow entry of compressed air or other substance under pressure. The maximum paint flow at the fully-operated position of the control lever is predetermined by adjusting the longitudinal position on the body of a closure cap which limits the movement of the guide. The airbrush has a minimum number of easily assembled parts and features a relatively simple paint-to-air seal disposed within the axial passageway.Type: GrantFiled: April 14, 1978Date of Patent: July 17, 1979Assignee: CBS Inc.Inventor: Jerome I. Rebold
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Patent number: 4155508Abstract: An apparatus for mixing and ejecting at least two interacting components to provide a foaming material. The apparatus comprises an injection head connected to supply circuits of the individual components, which head includes a mixing and ejecting chamber; the chamber has a cleaning plunger axially reciprocable therein and operated by a double acting cylinder connectable through a first sliding valve to a first pressure fluid supply conduit comprising a one-way valve, and respectively to a branched-off conduit connected to a pressure multiplier cylinder. The control side of multiplier cylinder is in turn connected to the pressure fluid supply through a second sliding valve operatively connected to the first sliding valve.Type: GrantFiled: July 13, 1977Date of Patent: May 22, 1979Assignee: Afros S.R.L.Inventor: Carlo Fiorentini
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Patent number: 4129231Abstract: A readily disassemblable gun for dispensing multiple fluidic components to a mixer includes a handle having an upper barrel. A head asembly is detachably connected to a rear end of the barrel. The head assembly extends flexible, fluid transporting tubes to a forward portion of the barrel and a detachable cap is secured to the forward end for defining an initial mixing chamber between the extended ends of the tubes and a conduit extending from the cap. Fluid components to be mixed are introduced from a supply source through individual tube communicating passages in the head assembly through the tubes to the initial mixing chamber. After initial mixing, the fluidic components are dispensed into an elongate mixer for additional mixing and ultimate discharge. A trigger lever is mounted on the handle and includes a member which normally deforms the tubes for preventing flow of fluidic components therethrough and into the initial mixing chamber.Type: GrantFiled: November 13, 1975Date of Patent: December 12, 1978Assignee: Jeddeloh Bros. Sweed Mills, Inc.Inventor: Charles L. Larson
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Patent number: 4123007Abstract: Valve assembly which mixes two components for delivery to a spraying apparatus. The assembly is comprised of a core valve mounted in a housing or body which is secured in a chamber in a manner which provides passageways between the housing and the chamber. A fluid is delivered to the core valve by a first conduitThe valve is also incorporated into a spraying apparatus with an internal fluid mixing chamber which simultaneously mixes two fluids, then delivers mixture to a nozzle for blending with another fluid component. The spraying apparatus is comprised of a gun body with an integral fluid mixing chamber, a nozzle body attached to the gun body, and a nozzle configured to blend two fluid components coming from the nozzle into a uniform spray. The nozzle body is connected to the gun body by a hollow tubular nut, having a threaded nipple as a conduit for delivery of a fluid.Type: GrantFiled: November 8, 1976Date of Patent: October 31, 1978Inventor: Charles R. Gardner
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Patent number: 4093121Abstract: A nozzle comprises three tubes enclosed by a casing and forming a longitudinally extending partition therein, one tube forming a central passage through the casing and communicating near the mouth of the nozzle with each of the other two tubes.Type: GrantFiled: November 17, 1976Date of Patent: June 6, 1978Assignee: N. Lundbergs Fabriks ABInventor: Torsten Erik Theodor Strom
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Patent number: 4055303Abstract: Disclosed are an aerial agrichemical spraying process and apparatus for producing and applying a multifluid invert emulsion. The apparatus, which is combined with an aircraft, comprises automatically balanced concentric tanks; multifluid valves combining individual preset metering control for each fluid with common, automatic, and simultaneous on/off control for all fluids; a single low-speed pump; a rotary twisted blade in-line mixer; a boom fitted with a number of spray nozzles; feeding and linking conduits; and an electrical control system.Type: GrantFiled: February 5, 1976Date of Patent: October 25, 1977Assignee: Golden State Helicopter, Inc.Inventor: Erben G. Brown
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Patent number: 4033481Abstract: The dispensing apparatus is especially adapted for metering, mixing and dispensing small "shots" of synthetic resin material in liquid form with a minute percentage of a liquid catalyst for patching defects in wood panels. A hand-held dispensing gun of the apparatus has a static mix tube extending from a mixing chamber in a dispensing head where a single air-operated piston upon trigger actuation simultaneously opens resin and catalyst infeed ports to the mixing chamber. At the same time, trigger actuation connects a control air line from a source of compressed air to a pilot air line to start an air motor which drives resin and catalyst metering pumps. These pumps are driven from a common drive shaft with an adjustable mechanical linkage for adjusting the catalyst-resin metering ratio. The pumps meter resin and catalyst through separate lines to the mix chamber of the dispensing gun. A thermostatically controlled heater preheats the resin as it flows to the dispensing gun.Type: GrantFiled: December 26, 1974Date of Patent: July 5, 1977Assignee: Artek Industries, Inc.Inventors: Prentiss C. Hicks, Fred C. Turrentine
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Patent number: 4023733Abstract: Apparatus for making and dispensing two liquids, such as organic resins and polyisocyanates which react to form a polyurethane foam. The apparatus comprises a dispensing gun including a mixing chamber having two liquid entry ports in a non-aligned relationship with each other. One of the entry ports is positioned forward or upstream from the other. A reciprocally mounted valving rod has an extended position for closing the ports and a retracted-position for opening the ports and permitting liquid flow into the mixing chamber.Type: GrantFiled: September 26, 1975Date of Patent: May 17, 1977Assignee: Instapak CorporationInventor: Charles R. Sperry
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Patent number: 3987771Abstract: A fuel metering device for providing a controlled flow of fuel from a fuel outlet port comprising a body portion, having a fuel valve therein adapted to intermittently admit fuel to a fuel chamber. The fuel chamber partly defines a fuel flow path to the fuel port and a fuel dispersing element is provided in the chamber having a conical dividing surface disposed in the fuel path on the upstream side of the fuel port. The fuel dispersing element includes internal air passages extending through same, the air passage means emitting air in the fuel port centrally of the fuel flow path at the fuel outlet port.Type: GrantFiled: August 1, 1975Date of Patent: October 26, 1976Assignee: Borg-Warner CorporationInventor: Cecil David Oglesby
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Patent number: 3976248Abstract: A gun is disclosed which is adapted to thoroughly intermix a pair of mutually soluble liquid reactants while pourably delivering the resulting mixture at substantially atmospheric pressure and before any substantial reaction has occurred. The structure of the mixing chamber of the gun is described in detail which structure does not include any baffles or other means impeding the free flow of the reactants through the mixing chamber. The preferred embodiment comprises a disposable tube portion and although the gun is essentially self-cleaning, a means for introducing a cleaning solvent into the mixing chamber is disclosed.Type: GrantFiled: April 28, 1975Date of Patent: August 24, 1976Assignee: Polymir Industries, Inc.Inventor: Gary Lee Middleton, Sr.
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Patent number: 3945569Abstract: Apparatus for mixing and dispensing two liquids such as organic resins and polyisocyanates which react to form a polyurethane foam. The apparatus comprises a dispensing gun and related equipment and includes a reciprocally mounted valving rod in the gun, which valving rod is circular at its ends and flattened intermediate such ends. In its retracted position, the valving rod is bathed in a liquid which acts as a cleansing agent therefor.Type: GrantFiled: October 25, 1974Date of Patent: March 23, 1976Assignee: Instapak CorporationInventor: Charles R. Sperry
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Patent number: 3933179Abstract: A portable mixing-dispensing device having a manual flow control valve means between a ventable flow control chamber and a solution-proportioning chamber, and a manual feed valve between the proportioning device and a source of concentrate supplied at a negative gauge pressure, same including means to selectively coordinate the operation of the valves. The feed valve serves also as an anti-backflow check valve for the concentrate supplied under a negative gauge pressure as well as maintaining the prime thereof without dilution when concentrate is not being supplied to the mixing chamber. A translucent concentrate supply tube readily visible from above the mixing chamber serves as a visual check as to the prime of the concentrate.Type: GrantFiled: February 27, 1974Date of Patent: January 20, 1976Inventor: Valentine Hechler, IV
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Patent number: RE29665Abstract: Apparatus for ejecting a mixture of liquids, e.g. urethane foam, comprises a cylindrical chamber into which the liquids are separately introduced under pressure and mixed and ejected from the open end of the chamber. A reciprocable plunger alternately exposes the inlets in its rear portion and seals the inlets from each other and purges the chamber in its forward position. The inlets are axially spaced apart and separated from each other by a throat that has interference fit with the plunger in the forward position of the plunger, the plunger having for this purpose an elastic deformable surface.Type: GrantFiled: February 24, 1977Date of Patent: June 13, 1978Assignee: Gusmer CorporationInventors: Frederick E. Gusmer, Carl W. Sundberg, Jr., Joseph E. Hayes, Jr.