# US 2014/0360278 A1 · Spiral Concentrically Wound Bourdon Tube > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0360278 A1 - Document ID: US20140360278A1 - Status: Published application - Kind: A1 - Application number: 14/298,498 - Filed: 2014-06-06 - Published: 2014-12-11 - Earliest claimed: 2013-06-06 - Assignees: Tiro Technologies, LLC - Applicants: Tiro Technologies, LLC - Inventors: Michael Riley LEVENSON; Gavin CHANDLER - Web page: https://patentgrep.com/patent/US20140360278A1 ## CPC - G01L 7/041: {Construction or mounting of deformable tubes} - B60C 23/04: mounted on the wheel or tyre - G01L 7/043: {with mechanical transmitting or indicating means} - G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G) - B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES ## Abstract In one embodiment, the present invention provides a pressure sensor that provides improved reliability, reduced cost, and improved performance over currently available pressure sensor designs. The pressure sensor may include a spiral concentrically wound tube coil having a sealed end and an open end, wherein the stem or open end of the tube is oriented so as to be parallel with a plane of the coil windings. In one embodiment, the spiral concentrically wound tube coil may be a Bourdon tube. ## Claims ### Claim 1 A pressure sensor comprising a spiral concentrically wound tube coil having a sealed end and an open end, wherein the stem or open end of the tube is oriented so as to be parallel with a plane of the coil windings. ### Claim 2 (depends on 1) The pressure sensor of claim 1, wherein the spiral concentrically wound tube coil is a Bourdon tube. ### Claim 3 (depends on 1) The pressure sensor according to claim 1 wherein the open end of the tube is oriented to face a center of a circle created by the coil windings. ### Claim 4 (depends on 1) The pressure sensor according to claim 1 wherein the minimum number of coil windings is 3. ### Claim 5 (depends on 1) The pressure sensor according to claim 1 wherein the open end of the tube is oriented towards a center of the coil when viewed from a position perpendicular to the plane of the coil windings. ### Claim 6 (depends on 1) The pressure sensor according to claim 1 wherein the open end or stem of the tube is parallel to the plane of the coil windings. ### Claim 7 (depends on 1) The pressure sensor according to claim 1 wherein the open end or stem of the tube is parallel to and in the same plane as the coil windings. ### Claim 8 (depends on 1) The pressure sensor according to claim 1 wherein the coil is made from Beryllium Copper, Stainless Steel, or other metal alloys. ### Claim 9 (depends on 1) The pressure sensor according to claim 1 wherein a pointer is mounted on the sealed end of the tube. ### Claim 10 (depends on 1) The pressure sensor according to claim 1 wherein the sealed end of the tube is used as a pointer, or is fashioned into a pointer. ### Claim 11 (depends on 1) The pressure sensor according to claim 1 wherein the maximum outer diameter of the tube coil is 3 inches. ### Claim 12 (depends on 1) The pressure sensor according to claim 1 wherein the maximum tube diameter is 0.5 inches. ### Claim 13 (depends on 1) The pressure sensor according to claim 1 wherein the maximum wall thickness of the tube is 0.15 mm. ### Claim 14 (depends on 1) The pressure sensor according to claim 1 wherein the tube is connected to a core, pipe, or other pressure vessel that contains a fluid for which a pressure measurement is desired. ### Claim 15 (depends on 1) The pressure sensor according to claim 1 wherein the operating pressure for the tube is 0-500 PSI. ### Claim 16 (depends on 14) The pressure sensor according to claim 14 wherein the core, pipe, or other pressure vessel is made of metal, metal alloy, plastic, carbon fiber, carbon nanotubes, composites, glass, ceramics, or any combination thereof. ### Claim 17 (depends on 14) The pressure sensor according to claim 14 wherein the tube is connected to the core, pipe, or other pressure vessel by adhesives, solders, or welding. ### Claim 18 (depends on 14) The pressure sensor according to claim 14 wherein the assembly has threads on an open end that allows for the assembly to be screwed on to another threaded core, pipe, or other pressure vessel. ### Claim 19 (depends on 14) The pressure sensor according to claim 14 wherein the core, pipe, or other pressure vessel is of a shape or has features that allow a housing, enclosure, or indicator made from metal, metal alloys, plastic, glass, ceramics, carbon fiber, carbon, nanotubes, composites, or combinations thereof to be mounted on the core, pipe, or pressure vessel wherein such housing or enclosure will enclose and protect the Bourdon tube and will have a dial or other markings that can interact with the tube pointer to indicate pressure, or where the indicator can interact with the tube pointer to indicate pressure. ### Claim 20 (depends on 14) The pressure sensor according to claim 14 wherein the pipe is a tire valve stem.