US2723880A - Device for heating the paint in spray painting - Google Patents

Device for heating the paint in spray painting Download PDF

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Publication number
US2723880A
US2723880A US237470A US23747051A US2723880A US 2723880 A US2723880 A US 2723880A US 237470 A US237470 A US 237470A US 23747051 A US23747051 A US 23747051A US 2723880 A US2723880 A US 2723880A
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paint
heat exchanger
cylinder
hose
medium
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US237470A
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English (en)
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Axelson Eskil Anders August
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/1606—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air
    • B05B7/1613—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
    • B05B7/162—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed and heat being transferred from the atomising fluid to the material to be sprayed

Definitions

  • the present invention relates to spray painting installations, more particularly for use with paint which has to be heated before delivery to the spray gun.
  • the temperature drop in the paint must be counteracted in some way or other at the passage of the paint through the supply conduits to the gun. This is generally obtained by using double paint hoses to the gun and by causing the paint to circulate through the hose and the paint heater by means of a circulation pump connected in the circuit.
  • the paint temperature is held rather constant on the condition that the circulation pump does not change its pumping capacity due to wear or for some other reason which unfortunately is often the case.
  • Such a device is therefore disadvantageous in the long run, all the more as the pump is very diificult to clean when another paint is to be used.
  • recent developments have brought about a new aspect, it having been established that the passage of the paint through the pump might have a detrimental influence upon the paint itself. As a matter of fact, the pumping destroys the metal pigments in paints containing such pigments.
  • the present invention eliminates all the disadvantages pointed out above, and its chief object is to provide a device for heating paint for paint spraying.
  • the device according to the invention is substantially characterized by the fact that a heat exchanger separated from the spray gun and preferably working according to the counter-current principle, the heating medium of said heat exchanger consisting of a heated pressure medium, which preferably is also used for effecting the atomization of the paint, is arranged so as to heat the paint to a temperature suitable for the spraying which temperature is kept substantially constant throughout the conveying of the paint from the heat exchanger to the spray gun by means of suitable arrangements round the paint passage therebetween, said heat exchanger being controlled by a control device preferably united with the heat exchanger and working dependent on the pressure conditions in the path of flow of the pressure medium to the gun.
  • Fig. 1 illustrates a sectional view of a heat exchanger united with the shifting or control device
  • Fig. 2 is a longitudinal section of the new spray hose according to the invention
  • Fig. 3 is an end view of the same hose.
  • a heat exchanger preferably working according to the counter-current principle is used for heating the paint.
  • said heat exchanger there is provided in the space between two cylindrical and concentric tubes 1 and 2 a helically corrugated thin-walled tube 3 arranged concentrically with said tubes 1 and 2, the outer diameter of said tube 3 substantially corresponding with the inner diameter of the outer tube 2, its inner diameter being about the same as the outer diameter of the inner tube 1.
  • a hot medium e. g. hot compressed air, which may be the same as that used for atomizing the paint.
  • the paint is led through the outer helical passage 5 located on the other side of the corrugated tube 3 between said tube and the outer tube 2.
  • the directions of flow of the hot medium and of the paint are preferably opposite to one another because in this case the heat exchanger has its greatest efficiency.
  • the paint in order to obtain a viscosity which is suitable for spray painting, should be heated to about 65 to 70 centigrades.
  • a suitable and common value of the paint quantity in continuous paint feeding is about 500 g./min.
  • the same medium e. g. hot pressure air
  • the required quantity of such medium is about 400 to 500 liters/minute
  • said medium must have an initial temperature of to centigrades (dependent upon the initial temperature of the paint) ahead of the heat exchanger, in order that the paint quantity of said order of magnitude shall obtain the temperature suitable for spraying.
  • stationary conduits may be used for supplying the heated gas to the heat exchanger, said conduits consisting of heat insulating tubes with great heat resistance, instead of rubber hoses or the like, which, due to their limited life, are very unsatisfactory in all respects at the temperatures in question.
  • the hot gas flows into the heat exchanger through the supply pipe 7 which is arranged in an insulated manner in the upper part 6 of the exchanger.
  • This pipe enters the adjacent guide disc 8 on the inner tube 1 in the heat exchanger and terminates with its end abutting against a separating wall 9 arranged within the tube 1.
  • the pipe 7 is provided Within the tube It With suitable outlet openings for the hot medium, through which said medium flows out into the tube 1 and flows upwardly and leaves through the holes 10 in the guide disc 8.
  • the hot medium then passes through the helical passage 4- and through the communication holes 11 arranged at the bottom of the heat exchanger and passes to the outlet channel 12 which is connected to the T-tube 33 on the control device to be described hereafter.
  • the hose for conveying the atomizing medium to the spray gun. Due to the fact that the gas is first caused to how upwards within the tube 1 as viewed from the separating wall 9, and afterwards is immediately forced to pass downwards on the other side of the wall of the tube 1, an equilization or distribution of the temperature is obtained within the range in question which is especially advantageous during pauses in the spraying.
  • the paint enters the heat exchanger through the paint inlet 13 at the bottom and, as earlier mentioned, passes through the outer helical passage and leaves through the paint outlet 14 which via the paint hose, communicates with the spray gun.
  • the outer tube 2 as well as an insulating tube 15 preferably arranged outside said tube 2 are in each end rigidly connected, at the bottom with the lower ring piece 16 of the heat exchanger and, at the top, with the upper ring piece 17 thereof.
  • the lower ring piece 16 is releasably secured on the outlet tube 12 for the heating medium by means of a nut 34, and the upper ring piece 17 is similarly secured on the upper part 6 of the heat exchanger by means of screws 18.
  • the lower ring piece 16 is furthermore arranged to seal against a lower supporting ring for the helically corrugated tube so that the paint which is fed through the inlet 13, is prevented from forcing its way out between the ring piece 16 and the outlet tube 12.
  • the unit consisting of the parts 16 and 17 and of the tubes 2 and 15 connecting said parts may be withdrawn downwardly from the heat exchanger, whereby the paint channels on the corrugated tube 3 are laid bare and can be easily cleaned.
  • This is of great importance, as thereby the heat exchanger can be easily cleaned before spraying with another paint and thus never need get a reduced capacity due to dried paint on the heat transmitting surfaces.
  • air might enter the paint passage through the heat exchanger and thus the paint in the heating coil might dry and block the passage. Such a defect can easily be eliminated with the above mentioned device, which also is of great importance.
  • the spraying aggregate is provided with a special spray hose which will be described more in detail hereinafter.
  • the spray hose is arranged to maintain a substantially constant temperature in the paint in the hose during pauses in the spraying, and furthermore to provide that the paint quantity in the hose is heated to the correct temperature at the first spraying of the day.
  • the spray hose should of course also insure an allround heat insulation during the spraying proper when hot paint permanently passes through the same.
  • the heat exchanger requires a small supply of heat in relation to the spray hose.
  • the spray hose which might be several meters long, needs a relatively great supply of heat in order to keep the temperature of the paint constant in the spray hose.
  • a relatively small 1621i quantity, or no heat at all is supplied to the hose, dependent upon the length of the hose for compensating temperature losses in the paint, and a great amount of heat is at the same time supplied to the heat exchanger, and so that, during a pause in the spraying, the heat supply conditions are at the same time reversed to a certain extent, this will mean a great advantage.
  • a control or shifting device connected to the supply conduit for the hot medium, between the heating device for said medium and the heat exchanger.
  • Fig. l the device is shown united with the heat exchanger which is a combination offering many advantages.
  • the control or shifting device according to the principle indicated above, is intended to control the supply of hot medium to the heat exchanger as well as to the spray hose in response to actuation of the valve of the spray gun and to the pressure changes in the conduits, which changes are connected with the operation of the valve, so that at spraying and during pauses in the spraying the heating medium quantities which have been found suitable, are supplied to said heat exchanger and said spray hose.
  • These quantities of hot medium may easily be adjusted to suitable values by throttling means or shunt couplings in the conduits.
  • the control device operates in the following manner: An operating plunger which is displaceably arranged in the cylindrical inlet channel 19 for the hot medium coming from the heating device and which is arranged to be held in an upper position of rest by a spring 21, will move downwards at different pressures above and below the plunger in dependence upon said pressures and shift the heat supply conditions for the heat exchanger and the pressure hose to the operating condition.
  • the operating plunger 20 communicates, via the supply conduit forthe heating medium connected to the inlet 19, with the heating device of said medium and, at the bottom, it communicates through conduit 25 with the same pressure medium leaving the heat exchanger, which pressure medium, due to pressure drop in the heat exchanger during flow, i. e. during spraying, has a lower pressure in conduit 25 than the medium at the upper part of the plunger 20.
  • the plunger 20 Immediately after the plunger 20 on its way downwards has covered the openings of the channels 22 and 23, it uncovers an opening 26 of a Wide channel which opening is situated above said first mentioned openings. Said wide channel communicates through a conduit 26' with the supply pipe 7 of the heat exchanger and delivers hot he ting medium to the heat exchanger. Since the heating medium, which in the contemplated case also is the spraying pressure medium, is supplied to the heat .5 exchanger and from there to the spray gun via the pressure medium hose, the operating plunger will be retained in its lower operative position in dependence upon the pressure difference between the pressure and heating medium above the same and that in the T-tube 33. This pressure drop naturally emanates from the flow of the medium through the heat exchanger and is determined by the flow velocity, the quantity of the medium and the dimensions of the channel in the heat exchanger.
  • the heating medium which in the contemplated case also is the spraying pressure medium
  • the channel 22 has substantially the same dimensions as the channel 23, but in order that a pressure drop shall not arise in v the cylinder space below the plunger 24) at flow through'said channels, the channel 23 may be provided with an exchangeable throttling washer 24', whose flow area and thus also the heat supply to the hose 29 are suited to the length of the hose which is connected to the channel 23.
  • such a leakage may be of advantage from several viewpoints.
  • such a leakage may at the spraying deliver a certain quantity of hot medium to the channel 23 and thus to the hose 2) connected to said channel, said hose being included in the means for keeping the paint temperature constant.
  • the leakage may furthermore supply a certain quantity of hot medium to the heat exchanger so that the temperature of the latter does not fall below a certain value.
  • suitably dimensioned shunt conduits may be arranged to the channel 23, and -to,the supply passage 26' connected to the port 26 respectively, in order to supply extra heating medium, if desired.
  • the shifting or ,control device is formed as a unit, which is secured to the upper part 6 of the heat exchanger by means of the screws 18 earlier mentioned, a heat insulating disc 27, e. g. of textile Bakelite, having been placed between said two-devices in order to prevent, during pauses in the spraying, thehigh temperature in the shifting unit from spreading to the paint via the upper part 6 of the heat exchanger. 2
  • the paint hose 28 which is connected to the paint outlet 14 of the heat exchanger and which may be of considerable length, must, as already mentioned, have substantially constant temperature (e. g. 65 centigrade), during pauses in the spraying.
  • the paint hose 28 and a hose 29 for heating medium which latter hose has substantially the same length as the paint hose and is connected to the channel 23, are placed in a common outer hose 30 which preferably is heat-insulated on the outside;
  • the outer hose 30 is sealed in its'front end 31 by a seal 32 so that only the paint hose 28 passes through said seal 32 and is connected to the paint intake of the spray gun bymeans of a hose coupling.
  • Thehose 29 is open at its front end and thus communicates with the space within the outer hose 30.
  • the paint heater is simple to manufacture and easy to clean. I
  • the drying period is also shortened due to the reduced quantity of solvents.
  • the increased evaporation in the spray cone due to the hot paint also contributes to said reduction.
  • a heat exchanger for use in a spray painting installation including a source of pressure, a source oft-hot compressed gas, a gas feeding line, a source of paint connected to the source of pressure, a paint feeding line, a
  • hot gas exhaust and a spray gun said heat exchanger comprising a first channel system communicating at one end with the source of gas and at the other end with said spray gun, a second channel system communicating atone end with said spray source of paint and at the other end 2,72s,sso
  • tion includinga sourceof pressure, a source of hot compressed gas, a gas feeding, line, a source of paint connected to the source of pressure, a paint feeding line, a hot gas exhaust and a.
  • spray gun said heat exchanger ciomp'n'singa first channel system communicating at one end with the source of gas and at the other end with said spray gun, a second channel system communicating at one end with the source of paint and at the other end with the paint feeding line and therethrough with said spray gun, saidchannel systemsbeing in intimate heat exchange relationship, and control means for causing gas to flow substantially at all times direct from the source of gas to the gas exhaust and to flow upon actuation of the gun from the source of gas through the first channel system to the gas feeding line.
  • control means comprises a block having an inlet connected with the sourceof hot compressed gas, a first outlet connected withlthe first channel system and a second outlet connected with the gas exhaust, the cross-section of the first outlet being substantially greater than that of the second outlet.
  • control means comprises a block having an inlet connected with the source of hot compressed gas, a first outlet connected with the first channel system, a second outlet connected with the gas exhaust, andexchangeable throttling means in the second outlet for varying the cross-section thereof to be atmost equal to that of the first outlet.
  • control means comprises a cylinder, a piston slidable in the cylinder, a spring resiliently holding the piston at one end of the cylinder, means establishing a communication betweensaid one end of the cylinder and the source of hot compressed gas, a narrow restricted passage establishing a communication between the other end of the cylinder and the gun and means intermediate the ends of the cylinder establishing a communication between said one end and said first channel system when the piston is at said other end of the cylinder, said last-named means being covered by the piston when at said one end, the force of the spring and the size of the narrow restricted passage being so calibrated that the pressure of the hot compressed gas will overcome the combined forces of the spring and of the pressure at the gun when the latter is actuated for spraying thereby to displace the piston to said other end of the cylinder and cause hot compressed gas to flow through said first channel system.
  • a heat exchanger as in claim further comprising means by-passing said, piston for supplying a limited amount from the source of hot compressed gas to the gas exhaust when the piston is at said one end of the cylinder.
  • a heat exchanger for use in a spray painting installation including asource of pressure, a source of hot compressed gas, a first gas feeding line, a source of paint connected to the source of pressure, a paint feeding line, a second gas feeding line and a spray gun, the second gas feeding line and paint feeding line being in heat exchange relationship: said heat exchanger comprising a first channel system communicating at one end with the source of gas and at the other end with the first gas feeding line, a; second channel system communicating at one end with the source of paintand at, the other end with the paint feeding line and therethrough with the gun, said channel systems being arranged for counter-flow of the gas and paint therethrough and in intimate heat exchange relationship, and control means for the heat exchanger responsive to pressure comprising a cylinder, a piston slideable in the cylinder, a spring normally resiliently holding the piston at one end of the cylinder, means establishing a communication between said one end and the source of hot compressed gas, a narrow restricted passage establishing a communication between the other end of the cylinder and the first gas feeding
  • a heat exchanger for use in a spray painting installation including a source of pressure, a source of hot compressed gas, a first gas feeding line, a source of paint connected to the source of pressure, a paint feeding line, a second gas feeding line, and a spray gun, the second gas feeding line and paint feeding line being in heat exchange relationship: said heat exchanger comprising a first channel system communicating at one end with the source of gas and at the other end with the first gas feeding line, a second channel system communicating at one end with the source of paint and at the other end with the paint feeding line and therethrough with the gun, said channel systems being in intimate heat exchange relationship, and control means for the heat exchanger responsive to pressure comprising a cylinder, a piston slideable in the cylinder, a spring normally resiliently holding the piston at one end of the cylinder, means establishing a communication between said one end and the source of hot compressed gas, a narrow restrictedpassage establishing communication between the other end of the cylinder and the first gas feeding line, means intermediate the ends of the cylinder establishing.
  • a heat exchanger for use in a spray painting installation including a source of pressure, a source of hot compressed gas, a first gas feeding line, a source of paint connected to the source of pressure, a paint feeding line, a second gas feeding line, and a spray gun, the second gas feeding line and paint feeding line being in heat exchange relationship: said heat exchanger comprising a first channel system communicating at one end with the source of gas and at the other end with said spray gun, and a second channel system communicating at one end with the source of paint and at the other end with the paint feeding line and therethrough with said spray gun, said channel systems being arranged for counter-flow of the gas and paint therethrough and in intimate heat exchange relationship.
  • a heat exchanger as in claim 13 further comprising a flexible heat-insulating outer hose surrounding the paint and first gas feeding lines throughout a substantial length thereof between the heat exchanger and said spray gun, the first gas feeding line having an open end inside said outer hose remote from the heat exchanger, and the outer hose being closed at the end thereof remote from the heat exchanger and open adjacent the heat exchanger thereby to provide unidirectional flow of paint and gas and return flow of gas in heat-exchange relationship throughout the length of the outer hose.
  • a heat exchanger as in claim 14 wherein the open end of the outer hose communicates with the atmosphere.
  • a heat exchanger as in claim 14 further comprising a casing surrounding the heat exchanger, the open end of the outer hose communicating with the space inside the casing surrounding the heat exchanger.
  • control means comprise a cylinder block, means insulatedly mounting said block on said heat exchanger, a cylinder in said block, a piston slidable in the cylinder, a spring resiliently holding the piston at one end of the cylinder, means establishing a communication between said one end of the cylinder and the source of hot compressed gas, means comprising a narrow, restricted passage establishing a communication between the other end of the cylinder and the gun and means intermediate the ends of the cylinder establishing a communication between said one end and said first channel system when the piston is at said other end of the cylinder, said lastnamed means being covered by the piston when at said one end, the force of the spring and the size of the narrow restricted passage being so calibrated that the 10 pressure of thehot compressed gas willovercome the combined forces of the spring and of the pressure at the gun when the latter is actuated for spraying thereby to displace the piston to said other end of the cylinder and cause hot compressed gas to flow through said first channel system.
  • a heat exchanger as in claim 17 further comprising means by-passing said piston for supplying a limited amount from the source of hot compressed gas to the gas feeding line when the piston is at said one end of the cylinder.
  • a heat exchanger for use in a spray painting installation including a source of pressure, a source of hot compressed gas, a gas feeding line, a source of paint connected to the source of pressure, a paint feeding line, a hot gas exhaust and a spray gun: a heat exchanger comprising an outer tube, a thin-walled helically corrugated tube inside the outer tube and concentric therewith to define a first channel therebetween, an inner tube inside said corrugated tube and concentric therewith to define a second channel therebetween, a supply tube for heat transfer medium opening into said second channel, and a partition wall positioned inside said inner tube intermediate the ends thereof adjacent the opening of said supply tube thereby to cause the hot medium entering said inner tube from said supply tube to change its direction of flow before entering said second channel and to resume its original direction upon entering said system.
  • a heat exchanger as in claim 20 having an insulating tube positioned outside said outer tube and mounted on said second and third ring members.
  • a source of paint In a spray painting installation, a source of paint; a source of hot fluid; a spray gun; a flexible hose comprising: a first conduit connecting the source of paint to the gun, a second conduit connected to the source of fluid at one end and open at the other end and an outer sheath surrounding both said conduits and closed at the end thereof at which the second conduit is open and open to the atmosphere at the other end thereof; a source of atomizing gas and a gas feeding line connected thereto and to the gun, and control means responsive to pressure in the gas feeding line for controlling the flow of fluid through the second conduit.

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  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US237470A 1950-07-24 1951-07-18 Device for heating the paint in spray painting Expired - Lifetime US2723880A (en)

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US (1) US2723880A (de)
BE (1) BE504831A (de)
CH (1) CH305202A (de)
DE (1) DE913629C (de)
FR (1) FR1046723A (de)
GB (1) GB707756A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941726A (en) * 1954-11-19 1960-06-21 Szczepanski Harry Booster-action airless spray unit
US2976392A (en) * 1953-09-04 1961-03-21 Wabnitz Richard Fluid distributing apparatus
US3073533A (en) * 1956-05-07 1963-01-15 Bayer Ag Method of and apparatus for producing plastics
US3196634A (en) * 1963-03-29 1965-07-27 Carrier Corp Refrigeration system
US5421405A (en) * 1993-12-07 1995-06-06 Avecor Cardiovascular, Inc. Heat exchanger
US6082781A (en) * 1996-01-24 2000-07-04 Hage Fittings Gmbh & Co. Kg Pipe connecting device
DE102012016360A1 (de) * 2012-08-20 2014-05-15 Harald Sonnleitner Sprühkopf mit einem Zerstäuber und Vorrichtung zum Beschichten von Substraten
US10639386B2 (en) 2014-12-04 2020-05-05 Columbia Insurance Company Pasteurizing paints and method for pasteurizing paints

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Publication number Priority date Publication date Assignee Title
DE1006321B (de) * 1954-06-29 1957-04-11 Krautzberger & Co Elektrisch beheizte Spritzpistole fuer zaehfluessige Spritzmittel, z.B. Farben
DE1265011B (de) * 1960-03-25 1968-03-28 Aix En Provence Turbokompressor zur Erzeugung erwaermter Luft zum Spritzen von Farben
DE1176031B (de) * 1960-04-06 1964-08-13 Eskil Anders August Axelson Elektrischer Durchlauferhitzer fuer Anstrichmittel
FR1324780A (fr) * 1962-06-12 1963-04-19 Pistolet chauffant par application aérothermique
GB2204945B (en) * 1987-05-22 1991-04-24 Nuovo Pignone Spa Heat exchanger for the domestic heating of water
GB2327374A (en) * 1997-07-17 1999-01-27 Noel James Bourke Melting thermoplastic material for application to surfaces
EP1369181B1 (de) 2002-06-05 2005-12-07 Peguform Gmbh Lackieranlage für Lacke mit hohem Feststoffgehalt
NO326582B1 (no) * 2006-10-18 2009-01-12 Hutoco As Apparat og framgangsmate for a temperere et overflatebehandlingsmiddel, samt anvendelse av apparatet

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US1845690A (en) * 1924-12-13 1932-02-16 Sun Oil Co Apparatus for the extraction of heat
US1861091A (en) * 1928-01-30 1932-05-31 Frigidaire Corp Of Dayton Refrigerating apparatus
FR878667A (fr) * 1942-01-23 1943-01-27 Vernis Duroux Dispositif pour application à chaud et au pistolet des peintures et vernis
US2378184A (en) * 1943-06-28 1945-06-12 Sherwin Williams Co Apparatus for applying coating material
US2456775A (en) * 1944-11-16 1948-12-21 Arthur J Fausek Heat exchanger
US2481813A (en) * 1947-07-25 1949-09-13 James A Bede Spray painting apparatus
US2499447A (en) * 1945-01-18 1950-03-07 Greiff Svenska Maskin Ab Paint pressure box with heat exchanger
US2499448A (en) * 1943-09-29 1950-03-07 Greiff Svenska Maskin Ab Heat exchanger
US2530799A (en) * 1950-11-21 Paint fbeheating and sfrayii
US2546741A (en) * 1946-03-12 1951-03-27 Darwin B Grossman Apparatus for spraying hot dope, lacquers, and other thermally thinned material
US2551078A (en) * 1948-04-16 1951-05-01 Ann M Shabrick Paraffin sprayer
US2565543A (en) * 1949-02-03 1951-08-28 Reliable Products Mfg Co Inc Fluid preheating and dispensing apparatus
US2590442A (en) * 1949-09-06 1952-03-25 Glen W Miller Heating device
US2658796A (en) * 1950-04-27 1953-11-10 Kopperschmidt Wilhelm Hot-spraying method and apparatus

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Publication number Priority date Publication date Assignee Title
US2530799A (en) * 1950-11-21 Paint fbeheating and sfrayii
FR372092A (de) *
DE137698C (de) * 1901-07-12
US1845690A (en) * 1924-12-13 1932-02-16 Sun Oil Co Apparatus for the extraction of heat
US1861091A (en) * 1928-01-30 1932-05-31 Frigidaire Corp Of Dayton Refrigerating apparatus
FR878667A (fr) * 1942-01-23 1943-01-27 Vernis Duroux Dispositif pour application à chaud et au pistolet des peintures et vernis
US2378184A (en) * 1943-06-28 1945-06-12 Sherwin Williams Co Apparatus for applying coating material
US2499448A (en) * 1943-09-29 1950-03-07 Greiff Svenska Maskin Ab Heat exchanger
US2456775A (en) * 1944-11-16 1948-12-21 Arthur J Fausek Heat exchanger
US2499447A (en) * 1945-01-18 1950-03-07 Greiff Svenska Maskin Ab Paint pressure box with heat exchanger
US2546741A (en) * 1946-03-12 1951-03-27 Darwin B Grossman Apparatus for spraying hot dope, lacquers, and other thermally thinned material
US2481813A (en) * 1947-07-25 1949-09-13 James A Bede Spray painting apparatus
US2551078A (en) * 1948-04-16 1951-05-01 Ann M Shabrick Paraffin sprayer
US2565543A (en) * 1949-02-03 1951-08-28 Reliable Products Mfg Co Inc Fluid preheating and dispensing apparatus
US2590442A (en) * 1949-09-06 1952-03-25 Glen W Miller Heating device
US2658796A (en) * 1950-04-27 1953-11-10 Kopperschmidt Wilhelm Hot-spraying method and apparatus

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976392A (en) * 1953-09-04 1961-03-21 Wabnitz Richard Fluid distributing apparatus
US2941726A (en) * 1954-11-19 1960-06-21 Szczepanski Harry Booster-action airless spray unit
US3073533A (en) * 1956-05-07 1963-01-15 Bayer Ag Method of and apparatus for producing plastics
US3196634A (en) * 1963-03-29 1965-07-27 Carrier Corp Refrigeration system
US5421405A (en) * 1993-12-07 1995-06-06 Avecor Cardiovascular, Inc. Heat exchanger
US6082781A (en) * 1996-01-24 2000-07-04 Hage Fittings Gmbh & Co. Kg Pipe connecting device
DE102012016360A1 (de) * 2012-08-20 2014-05-15 Harald Sonnleitner Sprühkopf mit einem Zerstäuber und Vorrichtung zum Beschichten von Substraten
US10639386B2 (en) 2014-12-04 2020-05-05 Columbia Insurance Company Pasteurizing paints and method for pasteurizing paints

Also Published As

Publication number Publication date
DE913629C (de) 1954-06-18
BE504831A (de)
CH305202A (fr) 1955-02-15
FR1046723A (fr) 1953-12-08
GB707756A (en) 1954-04-21

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