# US 2023/0054598 A1 · End-masking device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0054598 A1 - Document ID: US20230054598A1 - Status: Published application - Kind: A1 - Application number: 17/404,516 - Filed: 2021-08-17 - Published: 2023-02-23 - Earliest claimed: 2021-08-17 - Assignees: Engineered Products and Services, Inc. - Applicants: Engineered Products and Services, Inc. - Inventors: Andrew W. Oniszczuk - Web page: https://patentgrep.com/patent/US20230054598A1 ## CPC - B05B 12/20: Masking elements, i.e. elements defining uncoated areas on an object to be coated - B05C 21/005: {Masking devices (stencils B05C17/06; masking devices for which the means for applying liquids or other fluent material is spraying or is not important B05B12/20)} - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) - 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 masking device for placement over an end of a work piece includes a head portion, a collar portion, and at least one pull tab. The head portion includes a closed end and an interior cavity defined in the head portion. The collar portion is coupled to the head portion opposite the closed end of the head portion. The collar portion includes a radially inner surface defining an opening. The opening is in fluid communication with the interior cavity of the head portion. The opening is narrower than the interior cavity of the head portion. The collar portion further includes a radially outer surface. The at least one pull tab is coupled to the radially outer surface of the collar portion. ## Claims ### Claim 1 A masking device for placement over an end of a work piece, the masking device comprising: a head portion including a closed end and an interior cavity defined in the head portion; a collar portion coupled to the head portion opposite the closed end of the head portion, the collar portion including a radially inner surface defining an opening at an open end of the collar portion, the opening being in fluid communication with the interior cavity of the head portion, the opening being narrower than the interior cavity of the head portion, the collar portion further including a radially outer surface, the collar portion terminating distally from the head portion at the open end; and at least one pull tab coupled to the radially outer surface of the collar portion, the at least one pull tab extending longitudinally and radially outwardly from the collar portion at a position between the head portion and the open end of the collar portion. ### Claim 2 (depends on 1) The masking device of claim 1, wherein the at least one pull tab extends radially outwardly from the collar portion beyond the head portion. ### Claim 3 (depends on 1) The masking device of claim 1, wherein the at least one pull tab includes three pull tabs. ### Claim 4 (depends on 3) The masking device of claim 3, wherein the three pull tabs are evenly circumferentially spaced about the collar portion. ### Claim 5 (depends on 1) The masking device of claim 1, wherein the masking device is made of silicone rubber. ### Claim 6 (depends on 1) The masking device of claim 1, wherein a wall thickness of the collar portion is greater than a wall thickness of the head portion. ### Claim 7 (depends on 1) The masking device of claim 1, wherein the head portion, the collar portion, and the at least one pull tab are integrally formed together as a unitary piece. ### Claim 8 (depends on 1) The masking device of claim 1, wherein the collar portion further includes a cross-section shaped such that the collar portion tapers toward the at least one pull tab. ### Claim 9 (depends on 1) The masking device of claim 1, wherein the radially inner surface of the collar portion has a constant diameter along its axis such that the opening is circular. ### Claim at position 10 10-20. (canceled) ### Claim 21 (depends on 1) The masking device of claim 1, wherein the head portion further includes an annular wall, the annular wall extends radially inward toward the collar portion, the at least one pull tab is parallel to the annular wall, a wall thickness of the collar portion is greater than a wall thickness of the annular wall, a wall thickness of the closed end is greater than the wall thickness of the annular wall, and the annular wall has a thickness between 0.04 inches and 0.1 inches. ### Claim 22 (depends on 8) The masking device of claim 8, wherein the cross-section of the collar portion is in a shape of a wedge defined between the radially inner surface and the radially outer surface, the widest portion of the wedge being the radially inner surface of the collar portion. ### Claim 23 (depends on 1) The masking device of claim 1, wherein the masking device is elastic such that the collar portion stretches to widen the opening.