# US 11,077,461 B2 · Apparatus and methods for use in applying a fluid to a surface > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,461 B2 - Document ID: US11077461B2 - Status: Granted - Kind: B2 - Application number: 15/624,021 - Filed: 2017-06-15 - Published: 2018-12-20 - Granted: 2021-08-03 - Earliest claimed: 2017-06-15 - Assignees: The Boeing Company - Applicants: The Boeing Company - Inventors: Zachary B. Renwick; Zachary L. Green; Camille D. Carter; Daniel D. Bloch - Web page: https://patentgrep.com/patent/US11077461B2 ## CPC - B05D 1/28: performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers - B05C 1/00: Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating (B05C5/02, B05C7/00 take precedence) - B05C 1/025: {to flat rectangular articles, e.g. flat sheets (B05C1/027 takes precedence)} - B05C 1/06: by rubbing contact, e.g. by brushes, by pads {(brushes in general A46B)} - B05C 9/04: for applying liquid or other fluent material to opposite sides of the work - B05C 11/1044: {Apparatus or installations for supplying liquid or other fluent material to several applying apparatus or several dispensing outlets, e.g. to several extrusion nozzles} - B05C 13/00: Means for manipulating or holding work, e.g. for separate articles {(B05C1/0821 takes precedence)} - B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02) - B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08) ## Abstract A fluid application system includes a pair of identical, spaced apart, fluid applicators that each include a fluid permeable pad saturated with fluid. In one implementation, each applicator includes a pair of conduits coupled to a base plate, wherein each conduit includes a slot configured to receive an end of the pad. In another embodiment, each applicator defines a reservoir between adjacent plates and channels fluid from the reservoir though openings in the plate to the pad. In another implementation, each of the applicators includes a base plate, a conduit coupled to the base plate, and a housing slidably coupled to the base plate. The housing includes a plurality of pads and is moveable to selectively prevent fluid flow between the conduit and the pads in a first position or to couple the pads in fluid communication with the conduit in the second position. ## Claims ### Claim 1 A fluid application system, comprising: a pair of fluid applicators including a first fluid applicator and a second fluid applicator, each of said fluid applicators comprising: a base plate comprising a fluid inlet opening; a baffle plate spaced from said base plate to at least partially define a fluid reservoir therebetween, said baffle plate comprising a plurality of openings defined therethrough; and a fluid permeable pad coupled to said baffle plate, wherein said plurality of openings couple said fluid permeable pad in fluid communication with said fluid reservoir to enable delivery of the fluid from said reservoir to said fluid permeable pad; a first gasket coupled between said base plate and said baffle plate, said first gasket comprising a central opening that at least partially defines said fluid reservoir; and a rail system comprising a guide rail, wherein said first fluid applicator and said second fluid applicator are slidably coupled to said guide rail such that said first fluid applicator and said second fluid applicator are movable relative to each other to adjustably vary a distance therebetween to correspond to a thickness of a workpiece configured to be received between said first fluid applicator and said second fluid applicator. ### Claim 2 (depends on 1) The system of claim 1, wherein said fluid inlet opening extends from an end surface of said base plate beyond said first gasket such that said fluid inlet opening is coupled in fluid communication with said fluid reservoir. ### Claim 3 (depends on 1) The system of claim 1, wherein said fluid inlet opening comprises a groove defined in a surface of said base plate. ### Claim 4 (depends on 1) The system of claim 1, wherein said each fluid applicator further comprises: a second gasket coupled to said baffle plate; and a top plate coupled to said second gasket, wherein said top plate comprises a central opening defined therethrough to enable a portion of said fluid permeable pad to protrude through said central opening. ### Claim 5 (depends on 4) The system of claim 4, wherein a portion of said fluid permeable pad extends through said central opening beyond a surface of said top plate. ### Claim 6 (depends on 1) The system of claim 1, wherein said rail system comprises an actuator comprising a housing and a moveable rod, wherein said actuator causes movement of said first fluid applicator relative to said second fluid applicator. ### Claim 7 (depends on 1) The system of claim 1, wherein said each fluid applicator further comprises a cover removably coupled to said base plate, said cover configured to cover said fluid permeable pad to inhibit evaporation of fluid present in said fluid permeable pad during periods of non-use. ### Claim 8 (depends on 1) The system of claim 1, wherein said each fluid applicator further comprises a plurality of coupling mechanisms that couple said base plate to said rail system. ### Claim 9 (depends on 1) The system of claim 1, wherein said each fluid applicator further comprises a top plate coupled to said fluid permeable pad, wherein said top plate comprises a central opening defined therethrough to enable a portion of said fluid permeable pad to protrude through said central opening. ### Claim 10 (depends on 1) The system of claim 1, further comprising a support rail coupled to the first fluid applicator and moveable along the guide rail, and a support rail coupled to the second fluid applicator and moveable along the guide rail, to adjust the distance between the fluid applicators. ### Claim 11 (depends on 1) The system of claim 1, further comprising an actuator including a moveable rod, wherein the rod of the actuator may be coupled to any of the support rails or guide rail to facilitate operation of actuator to control the distance between the support rails that controls the distance between fluid applicators. ### Claim 12 (depends on 1) The system of claim 1, wherein the fluid permeable pad protrudes through the central opening in the top plate such that fluid permeable pad is the high point of the fluid applicator. ### Claim 13 (depends on 1) The system of claim 1, wherein the fluid permeable pad soaks up the fluid from the reservoir through capillary action. ### Claim 14 (depends on 1) The system of claim 1, further comprising a sacrificial fabric positioned over the fluid permeable pad to protect the fluid permeable pad from wear, wherein the sacrificial fabric soaks up fluid from fluid permeable pad and contacts a workpiece to apply the fluid to the workpiece. ### Claim 15 A fluid application system, comprising: a pair of fluid applicators including a first fluid applicator and a second fluid applicator, each of said fluid applicators comprising: a base plate comprising a fluid inlet opening; a baffle plate spaced from said base plate to at least partially define a fluid reservoir therebetween, said baffle plate comprising a plurality of openings defined therethrough; and a fluid permeable pad coupled to said baffle plate, wherein said plurality of openings couple said fluid permeable pad in fluid communication with said fluid reservoir to enable delivery of the fluid from said reservoir to said fluid permeable pad; a gasket coupled to said baffle plate; and a top plate coupled to said gasket, wherein said top plate comprises a central opening defined therethrough to enable a portion of said fluid permeable pad to protrude through said central opening; and a rail system comprising a guide rail, wherein said first fluid applicator and said second fluid applicator are slidably coupled to said guide rail such that said first fluid applicator and said second fluid applicator are movable relative to each other to adjustably vary a distance therebetween to correspond to a thickness of a workpiece configured to be received between said first fluid applicator and said second fluid applicator. ### Claim 16 (depends on 15) The system of claim 15, wherein said fluid inlet opening extends from an end surface of said base plate beyond said gasket such that said fluid inlet opening is coupled in fluid communication with said fluid reservoir. ### Claim 17 (depends on 15) The system of claim 15, wherein said fluid inlet opening comprises a groove defined in a surface of said base plate. ### Claim 18 (depends on 15) The system of claim 15, wherein said rail system comprises an actuator comprising a housing and a moveable rod, wherein said actuator causes movement of said first fluid applicator relative to said second fluid applicator. ### Claim 19 (depends on 15) The system of claim 15, further comprising a support rail coupled to the first fluid applicator and moveable along the guide rail, and a support rail coupled to the second fluid applicator and moveable along the guide rail, to adjust the distance between the fluid applicators. ### Claim 20 (depends on 15) The system of claim 15, further comprising a sacrificial fabric positioned over the fluid permeable pad to protect the fluid permeable pad from wear, wherein the sacrificial fabric soaks up fluid from fluid permeable pad and contacts a workpiece to apply the fluid to the workpiece.