US3284788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow rate monitoring systems
Assignee: Elastic Stop Nut Corp
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Filing: 1964-02-17
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Granted: 1966-11-08
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Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 James L Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:30
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/10; G01F1/106
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
223 words
A SYSTEM FOR MONITORING THE RATE OF FLOW OF A SUBSTANCE, SAID SYSTEM COMPRISING: (A) FIRST AND SECOND CIRCUITS, EACH OF SAID FIRST AND SECOND CIRCUITS COMPRISING FIRST AND SECOND CLAMP CIRCUITS AND FIRST AND SECOND TIMER CIRCUITS, RESPECTIVELY, (B) A TWO-POSITION SWITCH HAVING A MOVABLE CONTACT, (C) MEANS TO APPLY A SOURCE OF VOLTAGE TO SAID MOVBLE CONTACT, (D) MEANS COOPERATIVELY ENGAGED WITH SAID MOVABLE CONTACT TO ACTUATE SAID SWITCH FROM ONE OF SAID MOVTIONS TO THE OTHER OF SAID TWO POSITIONS AT A FREQUENCY WHOSE PERIOD IS A FUNCTION OF THE RATE OF FLOW OF SAID SUBSTANCE, (E) MEANS CONNECTING SAID FIRST CIRCUIT TO SAID SWITCH TO ENERGIZE SAID FIRST CLAMP CIRCUIT WHEN SAID SWITCH IS IN ONE OF SAID TWO POSITIONS THEREOF, (F) MEANS CONNECTING SAID SECOND CIRCUIT TO SAID SWITCH TO ENERGIZE SAID SECOND CLAMP CIRCUIT WHEN SAID SWITCH IS IN THE OTHER OF SAID TWO POSITIONS THEREOF, (G) MEANS INCLUDING A SOURCE OF VOLTAGE TO ENERGIZE SAID FIRST OR SAID SECOND TIMER CIRCUIT WHEN SAID FIRST OR SAID SECOND CLAMP CIRCUIT, RESPECTIVELY, IS DE-ENERGIZED, (H) SAID FIRST AND SAID SECOND TIMER CIRCUITS COMPRISING MEANS TO PRODUCE AN OUTPUT SIGNAL WHEN ENERGIZED FOR A PREDETERMINED PERIOD OF TIME, AND (I) MEANS CONNECTING SAID FIRST AND SAID SECOND TIMER CIRCUITS TO SAID OUTPUT MEANS TO APPLY SAID OUTPUT SIGNAL THERETO.
Claim 2
Independent Claim
223 words
A SYSTEM FOR MONITORING THE RATE OF FLOW OF A SUBSTANCE, SAID SYSTEM COMPRISING: (A) FIRST AND SECOND CIRCUITS, EACH OF SAID FIRST AND SECOND CIRCUITS COMPRISING FIRST AND SECOND CLAMP CIRCUITS AND FIRST AND SECOND TIMER CIRCUITS, RESPECTIVELY, (B) A TWO-POSITION SWITCH HAVING A MOVABLE CONTACT, (C) MEANS TO APPLY A SOURCE OF VOLTAGE TO SAID MOVBLE CONTACT, (D) MEANS COOPERATIVELY ENGAGED WITH SAID MOVABLE CONTACT TO ACTUATE SAID SWITCH FROM ONE OF SAID MOVTIONS TO THE OTHER OF SAID TWO POSITIONS AT A FREQUENCY WHOSE PERIOD IS A FUNCTION OF THE RATE OF FLOW OF SAID SUBSTANCE, (E) MEANS CONNECTING SAID FIRST CIRCUIT TO SAID SWITCH TO ENERGIZE SAID FIRST CLAMP CIRCUIT WHEN SAID SWITCH IS IN ONE OF SAID TWO POSITIONS THEREOF, (F) MEANS CONNECTING SAID SECOND CIRCUIT TO SAID SWITCH TO ENERGIZE SAID SECOND CLAMP CIRCUIT WHEN SAID SWITCH IS IN THE OTHER OF SAID TWO POSITIONS THEREOF, (G) MEANS INCLUDING A SOURCE OF VOLTAGE TO ENERGIZE SAID FIRST OR SAID SECOND TIMER CIRCUIT WHEN SAID FIRST OR SAID SECOND CLAMP CIRCUIT, RESPECTIVELY, IS DE-ENERGIZED, (H) SAID FIRST AND SAID SECOND TIMER CIRCUITS COMPRISING MEANS TO PRODUCE AN OUTPUT SIGNAL WHEN ENERGIZED FOR A PREDETERMINED PERIOD OF TIME, AND (I) MEANS CONNECTING SAID FIRST AND SAID SECOND TIMER CIRCUITS TO SAID OUTPUT MEANS TO APPLY SAID OUTPUT SIGNAL THERETO.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |