US3136970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure transducer
Assignee: International Resistance Co
•
Filing: 1963-01-18
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Granted: 1964-06-09
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Expires: 1983-01-18
Abstract
No abstract record available.
Inventors
- 👤 William B Pegram
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:31
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0041; G01L9/0051; G01L9/0057; H; H01; H01C; H01C10/00; H01C10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
231 words
A PRESSURE TRANSDUCER COMPRISING A FLAT BASE PLATE, A CYLINDER SECURED TO ONE SIDE OF SAID BASE PLATE, SAID CYLINDER HAVING A BORE THE LONGITUDINAL AXIS OF WHICH IS PERPENDICULAR TO SAID BASE PLATE, A SLACK DIAPHRAGM SECURED TO SAID CYLINDER AND EXTENDING ACROSS SAID CYLINDER BORE, A PISTON SEATED AGAINST SAID DIAPHRAGM, THE OUTER DIAMETER OF SAID PISTON BEING SMALLER THAN THE DIAMETER OF THE CYLINDER BORE, A STRAIGHT CONNECTING ROD SECURED TO THE DIAPHRAGM AND PISTON, SAID CONNECTING ROD EXTENDING THROUGH SAID CYLINDER BORE AND PROJECTING THROUGH AN OPENING IN SAID BASE PLATE, AN ELECTRICAL RESISTOR MOUNTED ON THE OTHER SIDE OF SAID BASE PLATE, SAID RESISTOR HAVING A STRAIGHT RESISTANCE ELEMENT EXTENDING PARALLEL TO SAID CONNECTING ROD AND A PAIR OF TERMINALS ELECTRICALLY CONNECTED TO OPPOSITE ENDS OF THE RESISTANCE ELEMENT, A RESISTOR CONTACT MEMBER MOUNTED ON SAID CONNECTING ROD AND SLIDABLY ENGAGING SAID RESISTANCE ELEMENT, A TERMINAL ELECTRICALLY CONNECTED TO SAID CONTACT MEMBER, AN ESHAPED SPRING MOUNTED OVER AND EXTENDING SUBSTANTIALLY PARALLEL TO THE OUTER SIDE OF THE BASE PLATE, THE INNER ARM OF SAID SPRING BEING SECURED TO THE CONNECTING ROD AND THE OUTER ARMS OF THE SPRING BEING SECURED TO THE BASE PLATE, SAID SPRING PERMITTING MOVEMENT OF SAID CONNECTING ROD ONLY LONGITUDINALLY OF THE AXIS OF THE CONNECTING ROD, AND MEANS FOR APPLYING THE PRESSURE TO BE MEASURED TO SAID DIAPHRAGM AND SAID PISTON.
Claim 2
Dependent Claim
231 words
A PRESSURE TRANSDUCER COMPRISING A FLAT BASE PLATE, A CYLINDER SECURED TO ONE SIDE OF SAID BASE PLATE, SAID CYLINDER HAVING A BORE THE LONGITUDINAL AXIS OF WHICH IS PERPENDICULAR TO SAID BASE PLATE, A SLACK DIAPHRAGM SECURED TO SAID CYLINDER AND EXTENDING ACROSS SAID CYLINDER BORE, A PISTON SEATED AGAINST SAID DIAPHRAGM, THE OUTER DIAMETER OF SAID PISTON BEING SMALLER THAN THE DIAMETER OF THE CYLINDER BORE, A STRAIGHT CONNECTING ROD SECURED TO THE DIAPHRAGM AND PISTON, SAID CONNECTING ROD EXTENDING THROUGH SAID CYLINDER BORE AND PROJECTING THROUGH AN OPENING IN SAID BASE PLATE, AN ELECTRICAL RESISTOR MOUNTED ON THE OTHER SIDE OF SAID BASE PLATE, SAID RESISTOR HAVING A STRAIGHT RESISTANCE ELEMENT EXTENDING PARALLEL TO SAID CONNECTING ROD AND A PAIR OF TERMINALS ELECTRICALLY CONNECTED TO OPPOSITE ENDS OF THE RESISTANCE ELEMENT, A RESISTOR CONTACT MEMBER MOUNTED ON SAID CONNECTING ROD AND SLIDABLY ENGAGING SAID RESISTANCE ELEMENT, A TERMINAL ELECTRICALLY CONNECTED TO SAID CONTACT MEMBER, AN ESHAPED SPRING MOUNTED OVER AND EXTENDING SUBSTANTIALLY PARALLEL TO THE OUTER SIDE OF THE BASE PLATE, THE INNER ARM OF SAID SPRING BEING SECURED TO THE CONNECTING ROD AND THE OUTER ARMS OF THE SPRING BEING SECURED TO THE BASE PLATE, SAID SPRING PERMITTING MOVEMENT OF SAID CONNECTING ROD ONLY LONGITUDINALLY OF THE AXIS OF THE CONNECTING ROD, AND MEANS FOR APPLYING THE PRESSURE TO BE MEASURED TO SAID DIAPHRAGM AND SAID PISTON.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |