Seat belt tension sensor
US6843143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2003 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Jun 9, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/103
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A lever is adapted to rotate about a first pivot at a first location responsive to a tension load from a webbing applied to an attachment pivoted or arcuately slotted about a second location. Tension load is reacted by a spring against a reaction element, and is sensed by either a displacement sensor or a force sensor. The sensed load range can be limited by a stop that engages the lever. The anchor bolt can be utilized as a stop in cooperation with a slot in the lever, wherein the lever is adapted to rotate about a stud depending from the reaction element. A tang portion of the lever engages a slot of a slide, and the displacement of the slide caused by a rotation of the tang reacted by springs at the ends of the slide is measured by a magnetic field sensor on the reaction element in cooperation with a pair of magnets on the slide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.