Wheel-tracking devices and related systems and methods
US9964471B2 · kind B2 · utility
2Cited by
7References
20Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 14, 2015 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Jul 14, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A30/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A wheel-tracking test device includes a housing, one or more test chambers in the housing, one or more load arm assemblies, and a drive mechanism. Each test chamber is configured to receive and hold one or more asphalt test samples. Each load arm assembly includes a weighted loading arm and a wheel rotatably connected to the loading arm. The drive mechanism is configured to move the load arm assembly from a load position in which the wheel is on a test sample held in the test chamber and a rest position by retracting the loading arm such that the wheel is lifted off the test sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.