US3335962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back-pressure-controlled-motorpowered pump
Assignee: Individual
•
Filing: 1965-12-02
•
Granted: 1967-08-15
•
Expires: 1985-12-02
Abstract
No abstract record available.
Inventors
- 👤 Robert H E Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:24
CPC Classifications
B; B60; B60S; B60S3/00; B60S3/04; B60S3/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
CLEANING APPARATUS, COMPRISING: (A) A SOURCE OF FLUID, (B) A PUMP FOR PUMPING SUCH FLUID, (C) AN ENGINE FOR OPERATING SAID PUMP, (D) A FLUID CONDUCTOR CONNECTED TO SAID PUMP FOR RECEIVING THE FLUID PUMPED THEREBY, (E) A DISCHARGE NOZZLE AT THE END OF THE FLUID CONDUCTOR, (F) A DUMP VALVE MOUNTED BETWEEN SAID PUMP AND SAID NOZZLE, (G) FLUID-ACTUATED CONTROL MEANS FOR CONTROLLING THE SPEED OF OPERATION OF SAID ENGINE IN RESPONSE TO PREDETERMINED FLUID PRESSURES ACTING THEREON, AND (H) MEANS ESTABLISHING FLUID COMMUNICATION BETWEEN SAID FLUID-ACTUATED CONTROL MEANS AND THE FLUID DISCHARGED FROM SAID PUMP TO SUPPLY THE PREDETERMINED FLUID PRESSURES TO SAID CONTROL MEANS FOR CAUSING THE ENGINE TO OPERATE AT IDLE SPEED WHEN THE DUMP VALVE IS OPENED AND FOR CAUSING THE ENGINE TO OPERATE AT A PREDETERMINED OPERATING SPEED WHEN THE DUMP VALVE IS CLOSED.
Claim 2
Dependent Claim
140 words
CLEANING APPARATUS, COMPRISING: (A) A SOURCE OF FLUID, (B) A PUMP FOR PUMPING SUCH FLUID, (C) AN ENGINE FOR OPERATING SAID PUMP, (D) A FLUID CONDUCTOR CONNECTED TO SAID PUMP FOR RECEIVING THE FLUID PUMPED THEREBY, (E) A DISCHARGE NOZZLE AT THE END OF THE FLUID CONDUCTOR, (F) A DUMP VALVE MOUNTED BETWEEN SAID PUMP AND SAID NOZZLE, (G) FLUID-ACTUATED CONTROL MEANS FOR CONTROLLING THE SPEED OF OPERATION OF SAID ENGINE IN RESPONSE TO PREDETERMINED FLUID PRESSURES ACTING THEREON, AND (H) MEANS ESTABLISHING FLUID COMMUNICATION BETWEEN SAID FLUID-ACTUATED CONTROL MEANS AND THE FLUID DISCHARGED FROM SAID PUMP TO SUPPLY THE PREDETERMINED FLUID PRESSURES TO SAID CONTROL MEANS FOR CAUSING THE ENGINE TO OPERATE AT IDLE SPEED WHEN THE DUMP VALVE IS OPENED AND FOR CAUSING THE ENGINE TO OPERATE AT A PREDETERMINED OPERATING SPEED WHEN THE DUMP VALVE IS CLOSED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |