Key-operated ignition device
US4972692A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1989 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Nov 1, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5956
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A key-operated ignition device which prevents an engine starter from being driven while the engine is already running, so to protect the starter and engine from damage. The device comprises a key-operated rotor disposed in the device for turning a locking cam via a coupling plate to shift an ignition switch between off, on and start positions. A sliding member is selectively movable between first and second positions by a restriction plate, wherein when the sliding member is in the first position the rotor may be turned from the on position to the start position and when the member is in the second position, the rotor is prevented from again turning from the on position to the start position, without first turning to the off position. The restriction plate also prevents the rotor from being directly turned from the off position to a lock position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.