US3247716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure ratio indicator
Assignee: Holley Performance Products Inc
•
Filing: 1962-03-09
•
Granted: 1966-04-26
•
Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
- 👤 Edward K Ranke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:18
CPC Classifications
G; G01; G01L; G01L7/00; G01L7/02; G01L7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PRESSURE RATIO INDICATOR COMPRISING SEPARATE PRESSURE RESPONSIVE MEANS FOR SENSINGG SEPARATE PRESSURES AND MOVING SUBSTANTIALLY IN RESPONSE THERETO, AN ELECTRICAL CIRCUIT OPERABLE ON BEING COUPLED TO THE SEPARATE PRESSURE RESPONSIVE MEANS TOP PROVIDE AN INDICATION OF THE RATIO OF THE SENSED PRESSURES INCLUDING A SOURCE OF ELECTRICAL ENERGY, A PAIR OF VARIABLE RESISTORS, ONE OF WHICH IS MUCH LARGER THAN THE OTHER, THE SMALLER OF WHICH IS CONNECTED IN SERIES WITH THE SOURCE OF ELECTRICAL ENERGY AND THE LARGER OF WHICH IS CONNECTED IN PARALLEL WITH A PORTION OF THE SMALLER RESISTOR, APPARATUS DIRECTLY COUPLING THE PRESSURE RESPONSIVE MEANS TO THE ELECTRIC CIRCUIT FOR INDIVIDUALLY VARYING THE PORTION OF THE SMALLER RESISTANCE IN PARALLEL WITH THE LARGER RESISTANCE AND FOR VARYING THE MAGNITUDE OF THE LARGER RESISTANCE IN ACCORDANCE WITH THE SENSED SEPARATE PRESSURES AND ELECTRIC CURRENT RESPONSIVE MEANS CONNECTED IN SERIES WITH THE LARGER RESISTOR FOR INDICATING THE RATIO OF THE PRESSURES.
Claim 2
Dependent Claim
154 words
A PRESSURE RATIO INDICATOR COMPRISING SEPARATE PRESSURE RESPONSIVE MEANS FOR SENSINGG SEPARATE PRESSURES AND MOVING SUBSTANTIALLY IN RESPONSE THERETO, AN ELECTRICAL CIRCUIT OPERABLE ON BEING COUPLED TO THE SEPARATE PRESSURE RESPONSIVE MEANS TOP PROVIDE AN INDICATION OF THE RATIO OF THE SENSED PRESSURES INCLUDING A SOURCE OF ELECTRICAL ENERGY, A PAIR OF VARIABLE RESISTORS, ONE OF WHICH IS MUCH LARGER THAN THE OTHER, THE SMALLER OF WHICH IS CONNECTED IN SERIES WITH THE SOURCE OF ELECTRICAL ENERGY AND THE LARGER OF WHICH IS CONNECTED IN PARALLEL WITH A PORTION OF THE SMALLER RESISTOR, APPARATUS DIRECTLY COUPLING THE PRESSURE RESPONSIVE MEANS TO THE ELECTRIC CIRCUIT FOR INDIVIDUALLY VARYING THE PORTION OF THE SMALLER RESISTANCE IN PARALLEL WITH THE LARGER RESISTANCE AND FOR VARYING THE MAGNITUDE OF THE LARGER RESISTANCE IN ACCORDANCE WITH THE SENSED SEPARATE PRESSURES AND ELECTRIC CURRENT RESPONSIVE MEANS CONNECTED IN SERIES WITH THE LARGER RESISTOR FOR INDICATING THE RATIO OF THE PRESSURES.
References Cited (Backward Citations)
US2985019A
Cited
US3013234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |