Process and device for heating windscreen washer liquid
US6133546A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Apr 12, 1999 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Apr 12, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60S1/50
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Only a small useful quantity of washing water as close as possible to the spray nozzles of the windshield wiper system is heated. As a result of corresponding miniaturization, the heating time can be reduced to 5 to 10 seconds. A sufficient cleaning effect can be achieved in most cases by hot water after the windshield spray system is actuated two or three times. Additional cleaning can be carried out either by rinsing with colder or cold water or by repeating after 10 to 20 seconds. The water is heated via an instant heating element which, with a content of, for example, 10 to 50 cm.sup.3, can be installed even in a secondary chamber. Some of the heat energy is therefore stored in a larger thermal reserve tank of, for example, 1 dl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.