# US 9,433,968 B1 · Application of substance to protrusion > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,433,968 B1 - Document ID: US9433968B1 - Status: Granted - Kind: B1 - Application number: 14/722,735 - Filed: 2015-05-27 - Granted: 2016-09-06 - Earliest claimed: 2011-10-28 - Assignees: Designetics, Inc. - Applicants: Craig A Williams; Charles J Barnhart - Inventors: Craig A Williams; Charles J Barnhart - Web page: https://patentgrep.com/patent/US9433968B1 ## CPC - B05D 1/26: performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface - B05C 1/02: for applying liquid or other fluent material to separate articles {(B05C1/006 takes precedence)} - B05C 1/06: by rubbing contact, e.g. by brushes, by pads {(brushes in general A46B)} - B05C 17/002: {with feed system for supplying material from an external source; Supply controls therefor (B05C17/02 takes precedence)} - B05D 1/02: performed by spraying - B05D 5/00: Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures - 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 applicator for applying a fluid to a surface protrusion. In one embodiment, an anticorrosion substance is applied to a structural fastener. ## Claims ### Claim 1 A method of coating a structural fastener with an anticorrosion fluid substance which comprises covering the fastener with a porous material and controllably flowing the anticorrosion substance to the porous material so as to uniformly coat the fastener with the substance. ### Claim 2 (depends on 1) The invention of claim 1 wherein the fluid substance is a corrosion resistant conversion composite. ### Claim 3 A method for applying a fluid to a surface protrusion with a fluid applicator, said applicator comprising a hollow body having an elongated axis with opposing ends and an opening at each of the opposing ends, a porous material positioned inside said hollow body along the elongated axis, said material containing an aperture at one end and opening of the hollow body, said aperture having a predetermined depth and predetermined geometric shape so as to allow the porous material to cover a surface protrusion of a given height and a geometric shape such that fluid flowing from the porous material is controllably and uniformly applied to the protrusion. ### Claim 4 (depends on 3) The method of claim 3 wherein the aperture depth is equal to or greater than the height of the protrusion. ### Claim 5 (depends on 3) The method of claim 3 wherein the geometric shape of the aperture is the same geometric shape as the protrusion. ### Claim 6 (depends on 3) The method of claim 3 wherein the porous material comprises two or more abutting sections. ### Claim 7 (depends on 6) The method of claim 6 wherein each section is made of the same porous material. ### Claim 8 (depends on 3) The method of claim 3 wherein the porous material comprises two abutting sections, each section being made of a porous material of the same composition. ### Claim 9 (depends on 3) The method of claim 3 wherein the porous material comprises two abutting sections, each section being made of a porous material of a different composition. ### Claim 10 (depends on 3) The method of claim 3 wherein the protrusion is a structural fastener. ### Claim 11 (depends on 3) The method of claim 3 wherein the fluid is a corrosion resistant conversion composition. ### Claim 12 A method for applying a fluid to a surface protrusion with a fluid applicator, said applicator comprising a hollow body having an elongated axis with opposing ends and an opening at each of the opposing ends, a porous material positioned inside the hollow body along the elongated axis, the porous material containing an aperture at one end and opening of the hollow body, said porous material aperture having a predetermined depth and diameter so as to match the height and the geometric shape of the surface protrusion and cover the surface protrusion such that fluid flowing from the porous material is controllably and uniformly applied to the protrusion. ### Claim 13 (depends on 12) The method of claim 12 wherein the porous material comprises two or more abutting sections. ### Claim 14 (depends on 13) The method of claim 13 wherein each section is made of the same porous material. ### Claim 15 (depends on 12) The method of claim 12 wherein the protrusion is a structural fastener. ### Claim 16 (depends on 12) The method of claim 12 wherein the fluid is a corrosion resistant conversion composition. ### Claim 17 A method for applying an anticorrosion fluid to a surface protrusion with a fluid applicator, said applicator comprising a hollow body having an elongated axis with opposing ends and an opening at each opposing end, a porous material positioned inside the hollow body along the elongated axis, said porous material comprising two separate sections, one section of the porous material containing an aperture at one opening of the hollow body, said aperture having a predetermined geometric shape and an aperture depth equal to or greater than the height of the protrusion to allow the porous material to cover a surface protrusion such that the anticorrosion fluid flowing from the porous material is controllably and uniformly applied to the protrusion. ### Claim 18 (depends on 17) The method of claim 17 wherein the protrusion is a structural fastener. ### Claim 19 (depends on 17) The method of claim 17 wherein the fluid is a corrosion resistant conversion composition.