Engine coolant removal and refill method and device
US5511590A · kind A · utility
11Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1993 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Jul 27, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P11/0204
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In an automotive cooling system made up of a radiator, overflow bottle, engine and heater core members, a method of removing spent antifreeze therefrom involves applying air pressure at the highest vertical point of the cooling system members, and draining the antifreeze via the lowest vertical point thereof. A method of refill via the radiator or pressurized overflow bottle involves utilization of a refill element with vacuum and coolant prongs. Simultaneous vacuum and refill of coolant is achieved with the refill element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.