Patent US3302460A successfully refreshed from Google Patents.
US3302460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature gauge
Assignee: Stewart Warner Corp
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Filing: 1964-11-17
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Granted: 1967-02-07
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Expires: 1984-11-17
Abstract
No abstract record available.
Inventors
- 👤 Charles F Hennecke
- 👤 Irwin E Mather
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:18
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/02; G01K5/00; G01K5/32; G01K5/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A DEVICE FOR INDICATING SAFE OPERATING CONDITIONS IN A PRESSURIZED, LIQUID-CONTAINING, RADIATOR SYSTEM, OR THE LIKE, COMPRISING A POINTER MOUNTED FOR ROTATION ABOUT A FIRST AXIS, A DIAL FACE IN COOPERATIVE ASSOCIATION WITH SAID POINTER AND CALIBRATED IN DEGREES OF TEMPERATURE, MEANS FOR CAUSING SAID POINTER TO ROTATE ABOUT SAID FIRST AXIS RESPONSIVE TO CHANGES IN LIQUID TEMPERATURE, SAID DIAL FACE DEFINING AN ARCUATE APERTURE SUBSTANTIALLY CONCENTRIC ABOUT SAID FIRST AXIS ALONG THE PATH OF ROTATION OF SAID POINTER, A FLAG MOUNTED FOR ROTATION WITH RESPECT TO SAID DIAL FACE ABOUT A SECOND AXIS PARALLEL TO SAID FIRST AXIS, SAID FLAG HAVING INDICIA THEREON COMPRISING TWO CONTRASTING COLORS VIEWABLE THROUGH SAID APERTURE, AND MEANS RESPONSIVE TO PRESSURE CHANGES FOR ROTATING SAID FLAG IN SAID SYSTEM TO MOVE SAID CONTRASTING COLORS PAST SAID APERTURE IN A DIRECTION CORRESPONDING TO THE DIRECTION OF MOVEMENT OF SAID POINTER FOR RESPECTIVE INCREASES OR DECREASES OF TEMPERATURE AND PRESSURE.
Claim 2
Independent Claim
154 words
A DEVICE FOR INDICATING SAFE OPERATING CONDITIONS IN A PRESSURIZED, LIQUID-CONTAINING, RADIATOR SYSTEM, OR THE LIKE, COMPRISING A POINTER MOUNTED FOR ROTATION ABOUT A FIRST AXIS, A DIAL FACE IN COOPERATIVE ASSOCIATION WITH SAID POINTER AND CALIBRATED IN DEGREES OF TEMPERATURE, MEANS FOR CAUSING SAID POINTER TO ROTATE ABOUT SAID FIRST AXIS RESPONSIVE TO CHANGES IN LIQUID TEMPERATURE, SAID DIAL FACE DEFINING AN ARCUATE APERTURE SUBSTANTIALLY CONCENTRIC ABOUT SAID FIRST AXIS ALONG THE PATH OF ROTATION OF SAID POINTER, A FLAG MOUNTED FOR ROTATION WITH RESPECT TO SAID DIAL FACE ABOUT A SECOND AXIS PARALLEL TO SAID FIRST AXIS, SAID FLAG HAVING INDICIA THEREON COMPRISING TWO CONTRASTING COLORS VIEWABLE THROUGH SAID APERTURE, AND MEANS RESPONSIVE TO PRESSURE CHANGES FOR ROTATING SAID FLAG IN SAID SYSTEM TO MOVE SAID CONTRASTING COLORS PAST SAID APERTURE IN A DIRECTION CORRESPONDING TO THE DIRECTION OF MOVEMENT OF SAID POINTER FOR RESPECTIVE INCREASES OR DECREASES OF TEMPERATURE AND PRESSURE.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |