# US 2014/0360279 A1 · Apparatus and Methods for Measurements of Pressure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0360279 A1 - Document ID: US20140360279A1 - Status: Published application - Kind: A1 - Application number: 14/297,774 - Filed: 2014-06-06 - Published: 2014-12-11 - Earliest claimed: 2013-06-06 - Assignees: Advanced Sensor Design Technologies, LLC - Applicants: Advanced Sensor Design Technologies, LLC - Inventors: Keith Jenkins - Web page: https://patentgrep.com/patent/US20140360279A1 ## CPC - G01L 1/22: using resistance strain gauges - G01B 5/08: for measuring diameters {(G01B5/0035 takes precedence; measuring radius of curvature G01B5/213)} - G01B 2210/58: Wireless transmission of information between a sensor or probe and a control or evaluation unit - G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G) - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS ## Abstract A strapping device for a pipe and methods of using the strapping device to non-invasively detect pressure inside the pipe and the residual stress exerted on the pipe. The strapping device includes a linked or a solid band adapted to be fitted around an outside diameter of the pipe. The strapping device further includes a sensor for measuring at least one of a change in the outside diameter of the pipe due to a corresponding change in pressure inside the pipe and to detect the stress or strain transferred from the pipe. The measurements can be conveniently processed in a circuit board coupled to the strapping device or in a remote location. The measurements can be transmitted through wires or digitally transmitted to the circuit board. ## Claims ### Claim 1 A strapping device for measuring pressure inside a pipe, the strapping device comprising: (i) a band for secureable clamping onto an outer surface of the pipe; and (ii) a sensor, wherein the sensor is installed on the band, wherein the strapping device is configured for non-invasively sensing and measuring at least one of: (a) a change in an outer diameter of the pipe; and (b) a change in a residual stress exerted on the pipe, wherein the change in the outer diameter of the pipe and the change in the residual stress exerted on the pipe are associated with a corresponding change in pressure inside the pipe. ### Claim 2 (depends on 1) The strapping device according to claim 1, wherein the band comprises a plurality of detachable linked elements. ### Claim 3 (depends on 2) The strapping device according to claim 2, wherein each of the linked elements comprises a pair of opposing through-holes for coupling to an adjacent linked element. ### Claim 4 (depends on 1) The strapping device according to claim 1, wherein the strapping device is configured to measure the change in pressure inside the pipe without penetrating the inside of the pipe. ### Claim 5 (depends on 1) The strapping device according to claim 1, wherein the strapping device is configured to measure the change in pressure inside the pipe without modifying the pipe. ### Claim 6 (depends on 1) The strapping device according to claim 1, wherein the strapping device further comprises a cooperative circuit board in communication with the sensor, wherein the cooperative circuit board comprises a processor. ### Claim 7 (depends on 1) The strapping device according to claim 1, wherein the strapping device further comprises a tensioning assembly operatively connected to the band for facilitating the secureable clamping onto the outer surface of the pipe, and wherein the tensioning assembly comprises one or more screws. ### Claim 8 (depends on 1) The strapping device according to claim 1, further comprising one or more removable pins for facilitating the secureable clamping onto the outer surface of the pipe. ### Claim 9 (depends on 1) The strapping device according to claim 1, wherein the sensor comprises one or more strain gauges. ### Claim 10 (depends on 1) The strapping device according to claim 1, wherein the sensor is adapted to measure the change in pipe diameter periodically or on a continual basis. ### Claim 11 (depends on 1) The strapping device according to claim 1, wherein the strapping device is pre-calibrated based on one or more known characteristics of the pipe. ### Claim 12 (depends on 1) The strapping device according to claim 1, wherein the strapping device is configured to wirelessly transmit the measured change in outer diameter of the pipe and/or the stress exerted on the pipe to a remote location. ### Claim 13 A method for non-invasively measuring pressure inside the pipe, the method comprising: (A) installing a strapping device onto an outer surface of the pipe, the strapping device comprising: (i) a band for secureably clamping onto the outer surface of the pipe; and (ii) a sensor, wherein the sensor is installed on the band, and wherein the sensor is in operative communication with a processor; and (B) measuring, using the processor, a change in residual stress exerted on the pipe, wherein the change in the residual stress exerted on the pipe is associated with a corresponding change in pressure inside the pipe. ### Claim 14 (depends on 13) The method according to claim 13, wherein the band comprises a plurality of detachable linked elements, and wherein the stress exerted on the pipe is transferred to the linked elements. ### Claim 15 (depends on 13) The method according to claim 13, further comprising pre-calibrating the strapping device prior to installing the strapping device onto the pipe. ### Claim 16 A method for non-invasively detecting pressure inside a pipe comprising: (A) installing a strapping device onto an outer surface of the pipe, the strapping device comprising: (i) a band for secureably clamping onto the outer surface of the pipe; and (ii) a sensor, wherein the sensor is installed on the band, and wherein the sensor is in operative communication with a processor; and (B) measuring, using the processor, a change in an outer diameter of the pipe, wherein the change in the outer diameter of the pipe is associated with a corresponding change in pressure inside the pipe. ### Claim 17 (depends on 16) The method according to claim 16, wherein the band comprises a plurality of detachable linked elements, and wherein the change in the outer diameter of the pipe is transferred to the linked elements. ### Claim 18 (depends on 16) The method according to claim 16, further comprising pre-calibrating the strapping device, wherein the pre-calibration comprises determining a change in the outer diameter of the pipe under a plurality of pressure conditions. ### Claim 19 (depends on 16) The method according to claim 16, wherein the strapping device detects the change in pressure inside the pipe without penetrating the inside of the pipe. ### Claim 20 (depends on 16) The method according to claim 16, further comprising at least one of dynamically calibrating the strapping device during its installation or pre-calibrating the strapping device at a manufacturing facility.