Patent US3436502A successfully refreshed from Google Patents.
Patent US3213400A successfully refreshed from Google Patents.
US3213400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Membrane-type strain gauge
Assignee: Siemens and Halske AG
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Filing: 1961-11-24
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Granted: 1965-10-19
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Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 Gieb Philipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:19
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/2206; G01L1/2218; G01L9/00; G01L9/0041; G01L9/0051
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A STRAIN GAUGE COMPRISING A MEMBRANE, MEANS FOR FIXEDLY SECURING SAID MEMBRANE CIRCUMFERENTIALLY THEREOF, SAID MEMBRANE HAVING A LOAD-RECEIVING CENTRAL PART WHICH IS SUBSTANTIALLY RESISTANT TO BENDING STRESSES, THE PORTION OF SAID MEMBRANE DISPOSED INTERMEDIATE ITS CIRCUMFERENTIALLY FIXEDLY SECURED PART AND SAID CENTRAL PART HAVING AN ANNULARLY EXTENDING AREA OF MINIMUM THICKNESS, THE THICKNESS OF SAID INTERMEDIATE PORTION INCREASING PROGRESSIVELY FROM SAID AREA TOWARD SAID CENTRAL PART AND SAID CIRCUMFERENTIALLY FIXEDLY SECURED PART, RESPECTIVELY, AND STRAIN MEASURING MEANS PROVIDED UPON THE OPPOSITELY DISPOSED FLANKS OF THE INTERMEDIATE PORTION OF PROGRESSIVELY INCREASING THICKNESS EXHIBITING OPPOSITELY ACTING BENDING STRESSES.
Claim 2
Dependent Claim
97 words
A STRAIN GAUGE COMPRISING A MEMBRANE, MEANS FOR FIXEDLY SECURING SAID MEMBRANE CIRCUMFERENTIALLY THEREOF, SAID MEMBRANE HAVING A LOAD-RECEIVING CENTRAL PART WHICH IS SUBSTANTIALLY RESISTANT TO BENDING STRESSES, THE PORTION OF SAID MEMBRANE DISPOSED INTERMEDIATE ITS CIRCUMFERENTIALLY FIXEDLY SECURED PART AND SAID CENTRAL PART HAVING AN ANNULARLY EXTENDING AREA OF MINIMUM THICKNESS, THE THICKNESS OF SAID INTERMEDIATE PORTION INCREASING PROGRESSIVELY FROM SAID AREA TOWARD SAID CENTRAL PART AND SAID CIRCUMFERENTIALLY FIXEDLY SECURED PART, RESPECTIVELY, AND STRAIN MEASURING MEANS PROVIDED UPON THE OPPOSITELY DISPOSED FLANKS OF THE INTERMEDIATE PORTION OF PROGRESSIVELY INCREASING THICKNESS EXHIBITING OPPOSITELY ACTING BENDING STRESSES.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |