Seat belt buckle monitor switch having cooperative circuit
US5109199A · kind A · utility
12Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1990 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | Feb 13, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2022/4816
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A seat belt buckle monitor switch has a cooperative circuit for indicating the closed state of a seat belt buckle in a motor vehicle. Due to high-grade monitorability, it has a high sensory reliability. The device is structurally designed such that it allows an operation of additionally provided circuit elements in at least one monitoring current loop. If a contact element is at an erroneous potential due to interruption of a current path outside or inside the switching component, this is detected in the test circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.