Engine oil change indicator system
US6208245A · kind A · utility
13Cited by
23References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1999 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Aug 2, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2011/1473
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a preferred embodiment, an engine oil change indicator system, including: a combination engine oil pressure sensor and engine oil temperature sensor connected to a port on the engine to which port is normally connected an oil pressure switch; and a microprocessor connected to receive inputs from the combination engine oil pressure sensor and engine oil temperature sensor and to cause a low engine oil pressure warning light to be illuminated when the microprocessor has calculated from the inputs that the engine oil should be changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.