Patent US3286529A successfully refreshed from Google Patents.
US3286529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision pressure gauge
Assignee: Texas Instruments Inc
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Filing: 1965-12-13
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Granted: 1966-11-22
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Expires: 1985-12-13
Abstract
No abstract record available.
Inventors
- 👤 Jr John B Damrel
- 👤 Jerry L Fruit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:13
CPC Classifications
G; G01; G01L; G01L11/00; G01L11/004; G01L9/00; G01L9/0026; G01L9/0032
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A PRESSURE GAUGE WHICH COMPRISES: (A) A HOLLOW HELICAL TUBE SUPPORTED WITH ONE END THERE FIXED AND WITH THE OTHER END MOVABLE, (B) A MIRROR MOUNTED AT SAID OTHER END OF SAID TUBE AND AT THE AXIS THEREOF FOR ROTATION RELATIVE TO SAID AXIS IN DEPENDENCE UPON MOVEMENT OF SAID OTHER END OF SAID TUBE, (C) STRUCTURE FOR ESTABLISHING A PRESSURE DIFFERENTIAL ACROSS THE WALLS OF SAID TUBE TO MOVE SAID OTHER END, (D) A SENSING SYSTEM FOR DIRECTING A BEAM OF LIGHT ONTO SAID MIRROR AND INCLUDING LIGHT-SENSITIVE MEANS FOR DETECTING THE REFLECTED LIGHT, (E) ROTATABLE MEANS FOR SUPPORTING SAID SENSING SYSTEM FOR ROTATION ABOUT SAID AXIS TO BRING INTO PREDETERMINED SPACE COINCIDENCE SAID LIGHT-SENSITIVE MEANS AND SAID REFLECTED LIGHT, AND (F) A CIRCUIT MEANS RESPONSIVE TO SAID LIGHT-SENSITIVE MEANS FOR DEVELOPING A DISTINCTIVE PHYSICAL CONDITION UPON OCCURRENCE OF SAID SPACE COINCIDENCE.
Claim 2
Dependent Claim
143 words
A PRESSURE GAUGE WHICH COMPRISES: (A) A HOLLOW HELICAL TUBE SUPPORTED WITH ONE END THERE FIXED AND WITH THE OTHER END MOVABLE, (B) A MIRROR MOUNTED AT SAID OTHER END OF SAID TUBE AND AT THE AXIS THEREOF FOR ROTATION RELATIVE TO SAID AXIS IN DEPENDENCE UPON MOVEMENT OF SAID OTHER END OF SAID TUBE, (C) STRUCTURE FOR ESTABLISHING A PRESSURE DIFFERENTIAL ACROSS THE WALLS OF SAID TUBE TO MOVE SAID OTHER END, (D) A SENSING SYSTEM FOR DIRECTING A BEAM OF LIGHT ONTO SAID MIRROR AND INCLUDING LIGHT-SENSITIVE MEANS FOR DETECTING THE REFLECTED LIGHT, (E) ROTATABLE MEANS FOR SUPPORTING SAID SENSING SYSTEM FOR ROTATION ABOUT SAID AXIS TO BRING INTO PREDETERMINED SPACE COINCIDENCE SAID LIGHT-SENSITIVE MEANS AND SAID REFLECTED LIGHT, AND (F) A CIRCUIT MEANS RESPONSIVE TO SAID LIGHT-SENSITIVE MEANS FOR DEVELOPING A DISTINCTIVE PHYSICAL CONDITION UPON OCCURRENCE OF SAID SPACE COINCIDENCE.
References Cited (Backward Citations)
US3067617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |