Cleaning apparatus with relief control valve
Abstract
Abstract THE PRESENT DISCLOSURE IS DIRECTED TO PRESSURE WASHING APPARATUS USED PRIMARILY IN WASHING VEHICLES. THE PRESSURE WASHER USES A HIGH-PRESSURE PUMP TO DELIVER A CLEANING SOLUTION TO THE SURFACE TO BE CLEANED AT APPROXIMATELY 500 P.S.I. THROUGH A FLOW-DIRECTING DEVICE OR GUN. THE CHOICE OF AT LEAST TWO CLEANING FLUIDS IS CONTROLLED THROUGH THE USE OF A SOLENOID OPERATED VALVE AND A CHECK VALVE. THE SOLENOID-OPERATED VALVE IS CONTROLLED BY THE CHANGES IN FLUID-LINE PRESSURE BETWEEN THE PUMP AND THE GUN DUE TO OPENING AND CLOSING THE VALVE IN THE GUN. A PRESSURE RELIEF VALVE INCLUDING A PRESSURE-ACTUATED SWITCHING MECHANISM IS CONNECTED TO THE FLUID LINE BETWEEN THE PUMP AND THE GUN AND RESPONDS TO THE PRESSURE CHANGES IN THE LINE. AND ELECTRICAL CIRCUIT INCLUDING THE SWITCHING MECHANISM AND SOLENOID-OPERATED VALVE ALTERNATELY OPENS AND CLOSED THE SOLENOID-OPERATED VALVE TO CHANGE THE SOURCE OF CLEANING SOLUTION. THE SWITCHING MECHANISM IS CONTROLLED BY THE PRESSURE CHANGES IN THE LINE CREATED BY OPENING AND CLOSING THE VALVE IN THE FLOW-DIRECTING DEVICE OR GUN.
Inventors
No inventors recorded.
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |