# US 2014/0360253 A1 · Adsorption material-based humidity sensor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0360253 A1 - Document ID: US20140360253A1 - Status: Published application - Kind: A1 - Application number: 13/913,567 - Filed: 2013-06-10 - Published: 2014-12-11 - Earliest claimed: 2013-06-10 - Assignees: Xerox Corporation - Applicants: Xerox Corporation - Inventors: George A. Gibson; Linn C. Hoover - Web page: https://patentgrep.com/patent/US20140360253A1 ## CPC - G01N 19/10: Measuring moisture content, e.g. by measuring change in length of hygroscopic filament; Hygrometers - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) ## Abstract Apparatuses include a base, a linear beam of paper material connected to the base, and an adhesive surface connected to the base adjacent the linear beam. In its un-deformed state, the linear beam is straight and elongated. A coating (e.g., a flexible moisture barrier) covers only a second side along the length of the linear beam (and does not cover a first side). The adhesive surface is a contact self-adhesive. The linear beam develops a curvature toward the adhesive surface from exposure to an atmospheric excessive moisture level above a previously established moisture level. A sufficient amount of curvature causes the linear beam to contact the adhesive surface, and the linear beam remains permanently attached to the adhesive surface after contacting the adhesive surface, thereby indicating that at some point the previously established moisture level has been exceeded. ## Claims ### Claim 1 An apparatus comprising: a linear beam of material having a length greater than a width, and having a first side and a second side along said length of said linear beam, said first side being opposite said second side; a coating covering only one of said first side and said second side along said length of said linear beam; and an adhesive surface adjacent said linear beam, said linear beam developing a curvature from exposure to an excessive moisture level above a previously established moisture level, said curvature causing said first side of said linear beam to contact said adhesive surface, and said linear beam remaining attached to said adhesive surface after contacting said adhesive surface. ### Claim 2 (depends on 1) The apparatus according to claim 1, said material decreasing in length upon adsorption of moisture. ### Claim 3 (depends on 1) The apparatus according to claim 1, said coating comprising a flexible moisture barrier. ### Claim 4 (depends on 1) The apparatus according to claim 1, further comprising a detector circuit, said first side of said linear beam comprising an electrical conductor, said adhesive surface comprising an electrical conductor, said first side of said linear beam and said adhesive surface comprising portions of said detector circuit, said first side of said linear beam contacting said adhesive surface forming an electrical connection completing said detector circuit and indicating said excessive moisture level above said previously established moisture level. ### Claim 5 (depends on 1) The apparatus according to claim 1, said first side changing in length a greater amount relative to said second side upon more moisture entering said first side relative to said second side. ### Claim 6 An apparatus comprising: a linear beam of paper material having a length greater than a width, and having a first side and a second side along said length of said linear beam, said first side being opposite said second side; a coating covering said first side along said length of said linear beam; and an adhesive surface adjacent said linear beam, said linear beam developing a curvature from exposure to an excessive moisture level above a previously established moisture level, said curvature causing said first side of said linear beam to contact said adhesive surface, and said linear beam remaining attached to said adhesive surface after contacting said adhesive surface. ### Claim 7 (depends on 6) The apparatus according to claim 6, said paper material decreasing in length upon adsorption of moisture. ### Claim 8 (depends on 6) The apparatus according to claim 6, said coating comprising a flexible moisture barrier. ### Claim 9 (depends on 6) The apparatus according to claim 6, further comprising a detector circuit, said first side of said linear beam comprising an electrical conductor, said adhesive surface comprising an electrical conductor, said first side of said linear beam and said adhesive surface comprising portions of said detector circuit, said first side of said linear beam contacting said adhesive surface forming an electrical connection completing said detector circuit and indicating said excessive moisture level above said previously established moisture level. ### Claim 10 (depends on 6) The apparatus according to claim 6, said first side changing in length a greater amount relative to said second side upon more moisture entering said first side relative to said second side. ### Claim 11 An apparatus comprising: a linear beam of paper material having a length greater than a width, and having a first side and a second side along said length of said linear beam, said first side being opposite said second side; a coating covering said first side along said length of said linear beam; and an adhesive surface comprising a contact adhesive adjacent said linear beam, said linear beam developing a curvature toward said adhesive surface from exposure to atmospheric moisture above a previously established moisture level, said curvature causing said first side of said linear beam to contact said adhesive surface, and said linear beam permanently remaining attached to said adhesive surface after contacting said adhesive surface. ### Claim 12 (depends on 11) The apparatus according to claim 11, said paper material decreasing in length upon adsorption of said atmospheric moisture. ### Claim 13 (depends on 11) The apparatus according to claim 11, said coating comprising a flexible moisture barrier. ### Claim 14 (depends on 11) The apparatus according to claim 11, further comprising a detector circuit, said first side of said linear beam comprising an electrical conductor, said adhesive surface comprising an electrical conductor, said first side of said linear beam and said adhesive surface comprising portions of said detector circuit, said first side of said linear beam contacting said adhesive surface forming an electrical connection completing said detector circuit and indicating an excessive moisture level above said previously established moisture level. ### Claim 15 (depends on 11) The apparatus according to claim 11, said first side changing in length a greater amount relative to said second side upon more moisture entering said first side relative to said second side. ### Claim 16 An apparatus comprising: a base; a linear beam of paper material connected to said base, said linear beam having a length greater than a width, and having a first side and a second side along said length of said linear beam, said first side being opposite said second side; a coating covering only said first side along said length of said linear beam and not covering said second side; and an adhesive surface connected to said base adjacent said linear beam, said adhesive surface comprising a contact self-adhesive, said linear beam developing a curvature toward said adhesive surface from exposure to an excessive humidity level above a previously established humidity level, a sufficient amount of said curvature causing said first side of said linear beam to contact said adhesive surface, and said linear beam remaining permanently attached to said adhesive surface after contacting said adhesive surface. ### Claim 17 (depends on 16) The apparatus according to claim 16, said paper material decreasing in length upon adsorption of atmospheric humidity. ### Claim 18 (depends on 16) The apparatus according to claim 16, said coating comprising a flexible humidity barrier. ### Claim 19 (depends on 16) The apparatus according to claim 16, further comprising a detector circuit, said first side of said linear beam comprising an electrical conductor, said adhesive surface comprising an electrical conductor, said first side of said linear beam and said adhesive surface comprising portions of said detector circuit, said first side of said linear beam contacting said adhesive surface forming an electrical connection completing said detector circuit and indicating said excessive humidity level above said previously established humidity level. ### Claim 20 (depends on 16) The apparatus according to claim 16, said first side changing in length a greater amount relative to said second side upon more moisture entering said first side relative to said second side.