Patents
US 12748002 B2: Stress and displacement sensors and methods of sensing
- Granted
- 2026-09-29
- Filed
- 2022-04-08 application 18286093
- Type
- Utility · 33 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Sensors include an optical source configured to emit a beam directed to an opposing surface having a reflectance pattern, and an optical detector situated in relation to the optical source to detect a portion of the beam reflected by the opposing surface and to produce an output signal that varies based on (i) a relative displacement between the reflectance pattern and the optical detector and (ii) a spatially variable reflectance resulting from the relative displacement. Reflectance patterns can be spatially variable and/or randomly arranged. Displacements in a compressive or tensile direction can be detected. Methods of operation and fabrication of sensors are also disclosed.
Source: PTBLXML, file of 2026-09-29 (ipgb20260929.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| University of Oregon 77 patents | US company or organization | Eugene, OR | University of Oregon College or university EXACT high confidence: identical full name and state | PTBLXML, file of 2026-09-29 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Keat Ghee Ong | Eugene, OR | 6 | PTBLXML, file of 2026-09-29 | |
| Michael McGeehan | Eugene, OR | PTBLXML, file of 2026-09-29 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01L | Measuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure | G01L1/24 | PTBLXML, file of 2026-09-29 |
| A61B | Diagnosis; surgery; identification | A61B5/0082 | PTBLXML, file of 2026-09-29 |
| G01B | Measuring length, thickness or similar linear dimensions; measuring angles; measuring areas; measuring irregularities of surfaces or contours | G01B11/16 | PTBLXML, file of 2026-09-29 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.