WO2018104826A1 - Raccord de liquide de revêtement pour pistolet de pulvérisation de peinture - Google Patents

Raccord de liquide de revêtement pour pistolet de pulvérisation de peinture Download PDF

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Publication number
WO2018104826A1
WO2018104826A1 PCT/IB2017/057491 IB2017057491W WO2018104826A1 WO 2018104826 A1 WO2018104826 A1 WO 2018104826A1 IB 2017057491 W IB2017057491 W IB 2017057491W WO 2018104826 A1 WO2018104826 A1 WO 2018104826A1
Authority
WO
WIPO (PCT)
Prior art keywords
spray gun
connector portion
paint spray
connector
locking member
Prior art date
Application number
PCT/IB2017/057491
Other languages
English (en)
Inventor
Brady P. Haislet
Bryan J. HAYWARD
Original Assignee
3M Innovative Properties Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Company filed Critical 3M Innovative Properties Company
Publication of WO2018104826A1 publication Critical patent/WO2018104826A1/fr

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Classifications

    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
    • B05B15/65—Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits
    • 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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus
    • 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
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter

Definitions

  • Liquid spray guns are generally known. In practice, it is typically necessary to connect and disconnect a liquid supply from a liquid spray gun in order to change liquids and/or clean the spray gun and associate liquid paths. Connections from a liquid supply to the spray gun should generally secure enough to maintain the coating liquid within the appropriate flow paths and prevent accidental disconnection. Known liquid supply connections can be difficult to assemble and disassemble, sometimes requiring the use of tools. Moreover, such connections can be difficult and/or time consuming to clean.
  • Exemplary embodiments according to the present disclosure include, but are not limited to, the embodiments listed below, which may or may not be numbered for convenience. Several additional embodiments, not specifically enumerated in this section, are disclosed within the accompanying detailed description.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1 :
  • a paint spray gun coating liquid connector comprising
  • a latch mechanism adapted to secure the first connector portion relative to the second connector portion, wherein;
  • the first connector portion comprises
  • a socket comprising a socket opening and an internal socket wall surrounding a liquid flow axis, the internal socket wall comprising a socket sealing surface; and the second connector portion comprises
  • the plug adapted to be inserted into the socket, the plug comprising an outer plug wall comprising a plug sealing surface adapted to seal against the socket sealing surface;
  • the latch mechanism comprises
  • an arm comprising a catch member on a distal end thereof;
  • an arm receiver to receive the arm when the plug is inserted into the socket; and a locking member that is movable to an assembly position and a locked position, wherein, in the assembly position, the arm can be inserted into and removed from the arm receiver, and, when in the locked position, the locking member engages the catch member such that the arm is securely retained in the arm receiver.
  • the paint spray gun coating liquid connector of Embodiment 6 further comprising a detent feature interacting with the locking member to provide tactile feedback that the locking member is in one of the assembly position or the locked position.
  • 8. The paint spray gun coating liquid connector of any of Embodiments 6-7 wherein the ring is removable from the paint spray gun coating liquid connector for cleaning without the use of tools.
  • a paint spray gun coating liquid connector comprising
  • a first connector portion on one of a paint spray gun nozzle assembly or an external paint source comprising a catch member
  • a second connector portion on the other of the paint spray gun nozzle assembly or the external paint source adapted to establish a sealed liquid connection upon installation to the first connector portion, the second connector portion comprising a locking member that is movable to an assembly position and a locked position;
  • first connector portion in the assembly position, first connector portion can be installed onto and removed from the second connector portion, and, when in the locked position, the locking member engages the catch member such that the first connector portion is securely retained in sealing relation against the second connector portion.
  • the paint spray gun coating liquid connector of Embodiment 10 wherein the locking member comprises a ring that is movable by rotation to the assembly position and the locked position.
  • the paint spray gun coating liquid connector of Embodiment 11 further comprising a detent feature interacting with the locking member to provide tactile feedback that the locking member is in one of the assembly position or the locked position.
  • a paint spray gun nozzle assembly comprising a first connector portion of a paint spray gun coating liquid connector, the first connector portion comprising
  • a socket comprising a socket opening and an internal socket wall surrounding a liquid flow axis, the internal socket wall comprising a socket sealing surface;
  • a first arm proximate the socket and comprising a catch member on a distal end thereof.
  • a sealing plane oriented normally to the liquid flow axis and intersecting the socket sealing surface, the socket sealing surface comprising a socket diameter;
  • a latching plane oriented normally to the liquid flow axis and intersecting a catch surface of the catch member
  • sealing plane and the latching plane offset from one another by a distance along the liquid flow axis in a range from 1 to 2 times the socket diameter.
  • the paint spray gun nozzle assembly of any of Embodiments 15-16 wherein the first arm extends beyond the socket opening in the direction of the liquid flow axis.
  • the catch member comprises a catch surface defined at least in part by a portion of the catch member extending radially-outwardly from the first arm with respect to the liquid flow axis.
  • the paint spray gun nozzle assembly of any of Embodiments 15-19 further comprising a spray gun connection portion adapted to connect the paint spray gun nozzle assembly to a compatible paint spray gun body.
  • the paint spray gun nozzle assembly of any of Embodiments 21-22 comprising a sealing plane oriented normally to the liquid flow axis and intersecting the socket sealing surface, the socket sealing surface comprising a socket diameter; and a latching plane oriented normally to the liquid flow axis and intersecting
  • sealing plane and the latching plane offset from one another along the liquid flow axis.
  • FIG. 1 depicts an exemplary paint spray gun
  • FIG. 2 depicts the paint spray gun of FIG. 1 having a paint spray gun nozzle assembly removed therefrom;
  • FIG. 3 depicts an exemplary paint spray gun nozzle assembly comprising a paint spray gun coating liquid connector
  • FIG. 4 depicts the paint spray gun nozzle assembly of FIG. 3 wherein a paint spray gun coating liquid connector is disassembled;
  • FIG. 5 is a cross section view of a paint spray gun nozzle assembly taken at 5-5 of FIG. 2 wherein a locking member is in the locked position;
  • FIG. 6 is a cross section view of a paint spray gun nozzle assembly taken at 5-5 of FIG. 2 wherein a locking member is in the assembly position;
  • FIG. 7 is a cross section view of a paint spray gun nozzle assembly taken at 7-7 of
  • FIG. 2
  • FIG. 8 is a cross section view of a paint spray gun nozzle assembly taken at 8-8 of
  • FIG. 6 is a diagrammatic representation of FIG. 6
  • FIGS. 9 and 10 depict a paint spray gun nozzle assembly having a second connector portion removed therefrom;
  • FIG. 11 is a cross section view taken at 8-8 of FIG. 6 having a second connector portion removed therefrom;
  • FIG. 12 depicts a paint spray gun nozzle assembly having a second connector portion removed therefrom;
  • FIGS. 13-16 depict a second connector portion
  • FIG. 17 is a cross section view of a second connector portion taken at 17-17 of FIG. 15;
  • FIG. 18 is a cross section view of a second connector portion taken at 18-18 of FIG. 15;
  • FIG. 19 is a cross section view of a second connector portion taken at 19-19 of FIG. 14;
  • FIG. 20 is a bottom view of a second connector portion
  • FIG. 21 depicts a locking member
  • FIG. 22 depicts a locking member in a stable state
  • FIG. 22A depicts a locking member in an expanded state
  • FIG. 23 depicts a locking member
  • FIG. 24 is a cross section view of a locking member taken at 24-24 of FIG. 23; and FIG. 25 depicts a locking member.
  • the paint spray gun 2 comprises a handle 4, a trigger 5, a connection for an external pressure source
  • the paint spray gun nozzle assembly 10 is removable and is attached at a nozzle assembly connection portion
  • the paint spray gun nozzle assembly 10 is shown removed in FIG. 2.
  • the nozzle assembly connection portion 7 facilitates the attachment of the paint spray gun nozzle assembly 10 to the paint spray gun body 3 by way of a locking ring 210 as described in U.S. provisional patent application number 62/430,383 (3M Docket No. 77384US002), entitled “Spray Gun and Nozzle Assembly Attachment,” filed December 6, 2016, the disclosure of which is herein incorporated by reference in its entirety.
  • the connection between the paint spray gun nozzle assembly 10 and the paint spray gun body 3 may be carried out by other means, such as, for example, a threaded collar, by one or more lever elements 130 as described, for example, in U.S.
  • patent 8,590,809 B2 to Escoto, Jr. et al. by manually operable means for releasably mounting as described in U.S. patent number 6,971,590 B2 to Blette et al., or by releasable mounts as described in U.S. patent publication number 2006/0065761 Al to Joseph et al., the disclosures of which are herein incorporated by reference in their entirety.
  • the paint spray gun nozzle assembly 10 is integral with (or at least not readily removable from) the spray gun body.
  • the paint spray gun nozzle assembly 10 comprises one end of a paint spray gun coating liquid connector 100, through which a coating liquid is supplied to the paint spray gun 2 from an external liquid source.
  • a coating liquid flow path 12 through which the coating liquid flows from the paint spray gun coating liquid connector 100 to a liquid nozzle 14. In operation, the coating liquid is propelled from the liquid nozzle 14 upon depressing the trigger 5.
  • the liquid spray nozzle assembly comprises an air cap 15 affixed to the spraying end thereof.
  • an air cap 15 can direct pressurized air advantageously toward the stream of coating liquid, e.g., via one or more shaping air outlets located in one or more air horns, as it is expelled from the liquid nozzle 14 to assist in atomization of the coating liquid and shaping of the coating liquid jet into the desired spray pattern for a given application.
  • the center air outlet directs air around the liquid outlet 14 to draw the coating liquid from the liquid nozzle 14 and (if desired) also impinges upon the coating liquid to atomize it, creating a fine mist of droplets.
  • one or more auxiliary air outlets may be provided in the air cap 15 to further assist in shaping the spray pattern.
  • the air cap 15, the center air outlet, the liquid nozzle 14, the air horns, the auxiliary air outlets, the shaping air outlets, and all other features of the air cap 15 may be configured according to the air cap 115 as described in U.S. provisional patent application number 62/430,393 (3M Docket No. 79035US002), entitled “Spray Gun Air Cap Retention Means,” filed December 6, 2016, and/or in U.S. Pat. Pub. Nos.
  • 2016/0052003 Al (“Liquid Spray gun, spray gun platform, and spray head assembly”); 2013/0327850 Al (“Nozzle tips and spray head assemblies for liquid spray guns”); 2014/0246519 Al (“Spray head assembly with integrated air cap/nozzle for a liquid spray gun”); 2013/0092760 Al (“Spray head assemblies for liquid spray guns”); 2015/0069142 Al (“Spray gun barrel with inseparable nozzle”); 2016/0151797 Al (“Air caps with face geometry inserts for liquid spray guns”); 2016/0175861 Al (“Nozzle assemblies, systems and related methods”); and/or in WO 2015/191323; and/or WO2016/191240), the disclosures of which are hereby incorporated by reference in their entireties.
  • the coating liquid is contained entirely within the liquid spray gun nozzle assembly 100, thus generally avoiding the need to clean the liquid spray gun body 3 after use.
  • a liquid needle 9' is affixed to the paint spray gun body 3, such that cleaning of the paint spray gun body 3 is generally limited to wiping or otherwise clearing the tip of the liquid needle after detaching the paint spray gun nozzle assembly 10.
  • the liquid needle may be housed in the paint spray gun nozzle assembly 10 such that it is removable from the paint spray gun body 3 along with the paint spray gun nozzle assembly 10.
  • the paint spray gun nozzle assembly 10 if disposable, may be discarded after use such that no further cleanup is required.
  • the paint spray gun nozzle assembly 10, if reusable is the only portion of the paint spray gun 2 left to clean. Both configurations can result in reduced cleanup time and materials, such as solvents, compared to what is typically required in a conventional spray gun.
  • the external liquid source 6' may be a container that is directly affixed to the paint spray gun nozzle assembly 10, or may comprise a remote reservoir that is connected to the paint spray gun nozzle assembly 10 by way of a hose.
  • the external liquid source is remotely pressurized (via a pressurized canister, a remote pump, or the like) to force the coating liquid into the paint spray gun nozzle assembly 10.
  • the coating liquid may be forced or pulled into the paint spray gun nozzle assembly 10 under the force of gravity, by way of a negative pressure induced by a venturi at the liquid nozzle 14, by a local pump, or through a combination of the above. Because the external liquid source can vary as described, it is shown in schematic form in FIG. 1.
  • the paint spray gun coating liquid connector 100 comprises a first connector portion 110 and a second connector portion 160.
  • One of the first connector portion 110 or the second connector portion 160 resides on the paint spray gun nozzle assembly 10, and the other on the external liquid source.
  • the paint spray gun coating liquid connector 100 facilitates quick connection and disconnection of the external liquid source to the paint spray gun nozzle assembly 10.
  • the first connector portion 110 comprises a socket 114 into which a plug 164 on the second connector portion 160 is installable such that the plug 164 is retained in sealing relation in the socket 114, and such that the coating liquid can flow through the paint spray gun coating liquid connector 100 along a liquid flow axis 101 in a sealingly contained manner.
  • the socket 114 comprises a socket opening 118 surrounding the liquid flow axis 101, an internal socket wall 122, and a socket sealing surface 126.
  • the internal socket wall 122 comprises a socket diameter 130.
  • the plug 164 comprises an outer plug wall 168 that corresponds in shape to the internal socket wall 122 at least at a portion that engages the socket sealing surface 126.
  • the plug 164 comprises a sealing member 176 that sealingly engages with the socket sealing surface 126 to form a liquid-tight seal.
  • the depicted sealing member 176 comprises an o-ring, but it should be understood that the sealing member 176 could additionally or alternatively comprise a gasket, an integrally formed sealing ring (e.g., an overmolded member), a deformable sealing structure (e.g., an annular ring), a friction fit, or any other known sealing means that may or may not comprise a component that is independent of the underlying structure.
  • sealing member 176 is shown as residing on the plug 164, it could alternatively reside on the internal socket wall 122. It should also be understood that, although the depicted sealing member 176 is configured to seal in a radial fashion (i.e., a piston-type seal), it could also be configured to seal in an axial manner (i.e., a face seal), or a combination of axial and radial sealing, such as could be attained by a conical or hemispherical shape.
  • the paint spray gun coating liquid connector 100 may comprise a latch mechanism 102 configured to retain the first and second connector portions in sealing relation and against accidental disconnection.
  • a first arm 134 is located proximal the socket opening 114 and comprises a distal end 142.
  • the first arm 134 extends along the liquid flow axis 101 from an area proximal the socket 114 opening from a proximal end 138 to a distal end 142 (i.e., the distal end 142 may optionally be proud of the socket opening 114, rather than flush with or recessed behind it as in other embodiments).
  • the distal end 142 of the first arm 134 comprises a catch member 146.
  • the catch member 146 extends in a radially- outward direction from the first arm 134 with respect to the liquid flow axis 101 and comprises a catch surface 150 generally facing in the direction of the socket 114 opening.
  • the catch member 146 when engaged with a locking member 184 on the other of the first or second connector portion 160, acts to retain the first connector portion 110 against the second connector portion 160 such that the two cannot be separated from one another along the liquid flow axis 101.
  • the liquid connector comprises a second arm 135 configured opposite (and as a rotationally symmetric image of) first arm 134.
  • the provision of a second arm 135 can provide additional strength and stability to the liquid connection. Additional arms (beyond the first and or second arms) may optionally be provided as appropriate or desirable.
  • a sealing plane 103 (oriented normally to the liquid flow axis 101) intersects the socket sealing surface 126 at a location where the sealing member 176 creates a fluid tight seal.
  • a latching plane 104 (oriented parallel to the sealing plane 103 and normal to the liquid flow axis 101) is defined along the catch surface 150 (or catch surfaces when a second arm 135 is provided comprising a catch surface 150).
  • a first distance D is defined between the sealing plane 103 and the latching plane 104.
  • seal-to-latch ratio (first distance D / socket diameter)
  • the 'socket diameter' in the above equation can be substituted with an effective socket diameter, which is defined herein to mean the largest measured opening of the socket (from internal socket wall to internal socket wall) along the sealing plane.
  • the seal-to-latch ratio is in a range from 1 to 2, and in some embodiments in a range from 1.25 to 1.75. In a preferred embodiment, the seal-to-latch ratio is 1.5 +/- 10%.
  • a seal-to-latch ratio in the described range reflects an advantageous relative axial separation between the region where a seal is created and the region where a retaining latch is created for a given socket diameter (or effective socket diameter). This relative axial separation can provide advantages in reducing relative movement of the connector components in the region where the seal is created, such a robust seal is maintained when the paint spray gun coating liquid connector 100 is subjected to off-axis forces (i.e., forces having a component that is normal to the liquid flow axis 101).
  • Such off-axis forces may occur, for example, if an attached liquid container is forcibly rocked or struck against a hard surface, or if an attached liquid hose is pulled to the side.
  • the first and second mating portions of a connector may allow increased relative rotation in response to such off-axis forces, resulting in an increased likelihood of a liquid seal being compromised.
  • This effect may be magnified where one or both of the first and second mating portions are constructed from a relatively deformable material (e.g., a polymer as compared to a typically used metal such as stainless steel), as may be the case with disposable components.
  • the first connector portion 110, the second connector portion 160, or both are essentially comprised of one or more injection molded polymeric components.
  • the second connector portion 160 comprises an arm receiver 180 adapted to receive the above-described first arm 134 during connection.
  • the arm receiver 180 is shaped to allow the first arm 134 to pass into engagement with the second connector portion 160 my translating the first connector portion 110 toward the second connector portion 160 along the liquid flow axis 101.
  • the locking member 184 may be moved from an assembly position 185 (in which the first arm 134 is permitted to move along the liquid flow axis 101) to a locked position 186.
  • the locking member 184 engages the catch member 146 on the first arm 134 to prevent separation of the first and second connector portions along the liquid flow axis 101.
  • the locking member 184 comprises a captured but rotatable ring 184'.
  • the locking member 184 may be captured in a chase 191 disposed on the outer surface of the second connector portion 160.
  • the chase 191 permits the locking member to move (e.g., rotate) about the liquid flow axis 101, but resists movement of the locking member 184 along the liquid flow axis 101.
  • the locking member 184 (comprising a ring 184') is free to rotate within the chase 191 within a constrained arc such that it can be moved from an assembly position 185 to a locked position 186.
  • a constrained arc may be facilitated by provision of a stop 199 provided in or at an end of the chase 191.
  • the stop 199 is positioned to allow the moving locking member 184 to positively stop at the assembly position to correctly align itself (and the arm window 180') with the arm receiver(s) 180 such that they are available to receive the first and second arms 134 and 135 during assembly.
  • a rail 198 is provided in conjunction with the chase 191 to assist in supporting and guiding the movement of the locking member 184.
  • the rail 198 is positioned in cooperation with a catch retainer 188 on the locking member.
  • the catch retainer 188 rests along (or upon) the rail 198.
  • the catch retainer 188 is exposed to interface with the catch surface 150 on a catch member 146, thereby preventing separation of the first and second connector portions 110 and 160 along the liquid flow axis 101.
  • the locking member 184 may
  • a detent feature 190 adapted to permit the locking member to be positively locked (or at least retained) in either or both of the assembly position or the locked position.
  • the detent feature 190 is provided on the catch retainer 188.
  • a cooperating feature (or features) may be provided on the rail 198 or on or adjacent to the catch member 146 (see, e.g., FIGS. 9, 10, and 12) of the first or second arm 134 or 135.
  • the detent feature 190 is shown as a protrusion from the catch retainer 188, but could also be provided as a recess within the catch retainer 188.
  • the detent feature 190 on the locking member 184 rides up the detent ramp 152 on the catch member 146, and then over the catch surface 150, as the locking member is moved from the assembly position 185 to the locked position 186.
  • the detent feature 190 drops just past the catch surface 150 (see FIG. 5), thereby resisting movement of the locking member 184 back to the assembly position 185.
  • the detent feature not only provides a locking function to permit the locking member 184 to be positively positioned in either the assembly position or the locked position, but also provides the user with tactile feedback indicating that these positions have been reached.
  • the locking member 184 comprises a locking member arm window 180' that permits a catch member 146 of a second arm 135 to pass therethrough such that the second arm 135 can access its corresponding arm receiver 180 when assembling the first connector portion 110 to the second connector portion 160.
  • the ring 184' as shown is constructed with an interrupted annulus 192.
  • the interrupted annulus acts as an additional window (opposite the arm window 180') to allow reception of the first arm 134.
  • the locking member 184 is constructed from a sufficiently resiliently deformable material (e.g., polyethylene, polypropylene, or the like)
  • the interrupted annulus 192 permits the locking member 184 to be deformed and removed from the paint spray gun coating liquid connector 100, thus permitting easy cleaning or replacement of the locking member 184 itself, and cleaning of any surfaces on the paint spray gun coating liquid connector 100 that are otherwise inaccessible while the locking member 184 is installed.
  • the locking member 184 When installed, the locking member 184 is in a stable state 196.
  • the locking member 184 is deformable to an expanded state 194 (see, e.g., FIGS. 22 and 22A).
  • the ability to remove the locking member 184 which in the embodiments shown is the only moving part in the paint spray gun coating liquid connector 100, results in improved ease of cleaning of both the locking member 184 and the remainder of the connector. This improved ease of cleaning may result in reduced time and cleaning material costs, reduced paint job contamination, and reduced connector costs in the long term.

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  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Nozzles (AREA)

Abstract

L'invention concerne un raccord de liquide de revêtement pour pistolet de pulvérisation de peinture, comprenant une première partie de raccord sur l'un d'un ensemble buse de pistolet de pulvérisation de peinture ou d'une source de peinture externe. La première partie de raccord comprend un élément de capture. Une deuxième partie de connecteur sur l'autre de l'ensemble buse de pistolet de pulvérisation de peinture ou de la source de peinture externe est conçue pour établir un raccord de liquide étanche lors de l'installation sur la première partie de raccord. La deuxième partie de raccord comprend un élément de verrouillage qui peut être déplacé vers une position d'assemblage et une position verrouillée. Dans la position d'assemblage, la première partie de raccord peut être installée sur la deuxième partie de raccord et enlevée de celle-ci et, lorsqu'elle est dans la position verrouillée, l'élément de verrouillage vient en prise avec l'élément de capture de telle sorte que la première partie de raccord est retenue de manière sûre dans une relation d'étanchéité contre la deuxième partie de raccord.
PCT/IB2017/057491 2016-12-06 2017-11-29 Raccord de liquide de revêtement pour pistolet de pulvérisation de peinture WO2018104826A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662430388P 2016-12-06 2016-12-06
US62/430,388 2016-12-06

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WO2018104826A1 true WO2018104826A1 (fr) 2018-06-14

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020121137A1 (fr) * 2018-12-12 2020-06-18 3M Innovative Properties Company Pistolet de pulvérisation de liquide, bague de raccord, appareil de pulvérisation de liquide et système adaptateur
FR3097783A1 (fr) * 2019-06-26 2021-01-01 Michel Camilleri Adaptateur serrable a emmanchement conique
US11154894B2 (en) 2016-12-12 2021-10-26 3M Innovative Properties Company Spray gun and nozzle assembly attachment
US11154884B2 (en) 2016-12-12 2021-10-26 3M Innovative Properties Company Spray gun and nozzle assembly attachment
US11229921B2 (en) 2016-12-06 2022-01-25 3M Innovative Properties Company Spray gun and nozzle assembly attachment
US11666934B2 (en) 2016-12-12 2023-06-06 3M Innovative Properties Company Spray gun and nozzle assembly attachment

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US11766686B2 (en) 2016-12-06 2023-09-26 3M Innovative Properties Company Spray gun and nozzle assembly attachment
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