Bi-axial load cell
US4197736A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1978 |
| Grant date | Apr 15, 1980 |
| Priority date | — |
| Expiry date | Oct 18, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/1627
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A load cell for measuring the rolling resistance of a tire as a function of a load placed on the tire. The cell includes a block having major parallel surfaces and a centrally disposed opening through which a shaft coupled to the tire rotates. An inner hub surrounding the opening and an outer hub are connected by a plurality of beams. Each beam is defined by a first pair of bores on the periphery of the inner hub and a second pair of bores in the outer hub. The first pair of bores are connected by a recessed web portion, as is the second pair of bores. The thickness of the first web portion relative to the major surfaces of the block is greater than the thickness of the other web. A first strain gage in one bore of the second pair and a second strain gage in the other bore of the second pair sense the rolling resistance of the tire along one axis and the loading force applied to the tire along another axis, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.