US3304768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fatigue testing device
Assignee: Individual
•
Filing: 1964-06-24
•
Granted: 1967-02-21
•
Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 Eugene C Naumann
- 👤 Emmett L Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:41
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/32; G01N3/36; G01N2203/00; G01N2203/0014; G01N2203/0016; G01N2203/003; G01N2203/0042; G01N2203/0048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A FATIGUE TESTING MACHINE FOR APPLYING A PREDETERMINED LOAD PROGRAM CONSISTING OF A SERIES OF DISCRETE LOAD LEVELS, TO A TEST SPECIMEN COMPRISING: MEANS INCLUDING A STRAIN GAGE FOR PRODUCING A DISCRETE ELECTRICAL SIGNAL PROPORTIONAL TO ONE OF SAID DISCRETE LOAD LEVELS; MEANS FOR APPLYING A LOAD TO SAID TEST SPECIMEN IN ACCORDANCE WITH AN ERROR ELECTRICAL SIGNAL; MEANS FOR PRODUCING A NONDISCRETE ELECTRICAL SIGNAL PROPORTIONAL TO THE LOAD ON SAID TEST SPECIMEN AND NEGATIVE WITH RESPECT TO SAID DISCRETE ELECTRICAL SIGNAL; MEANS FOR SUMMING SAID DISCRETE ELECTRICAL SIGNAL AND SAID NONDISCRETE ELECTRICAL SIGNAL TO FORM SAID ERROR SIGNAL; AND MEANS TO CAUSE SAID MEANS FOR PRODUCING A DISCRETE ELECTRICAL SIGNAL TO PRODUCE ANOTHER DISCRETE
Claim 2
Dependent Claim
115 words
A FATIGUE TESTING MACHINE FOR APPLYING A PREDETERMINED LOAD PROGRAM CONSISTING OF A SERIES OF DISCRETE LOAD LEVELS, TO A TEST SPECIMEN COMPRISING: MEANS INCLUDING A STRAIN GAGE FOR PRODUCING A DISCRETE ELECTRICAL SIGNAL PROPORTIONAL TO ONE OF SAID DISCRETE LOAD LEVELS; MEANS FOR APPLYING A LOAD TO SAID TEST SPECIMEN IN ACCORDANCE WITH AN ERROR ELECTRICAL SIGNAL; MEANS FOR PRODUCING A NONDISCRETE ELECTRICAL SIGNAL PROPORTIONAL TO THE LOAD ON SAID TEST SPECIMEN AND NEGATIVE WITH RESPECT TO SAID DISCRETE ELECTRICAL SIGNAL; MEANS FOR SUMMING SAID DISCRETE ELECTRICAL SIGNAL AND SAID NONDISCRETE ELECTRICAL SIGNAL TO FORM SAID ERROR SIGNAL; AND MEANS TO CAUSE SAID MEANS FOR PRODUCING A DISCRETE ELECTRICAL SIGNAL TO PRODUCE ANOTHER DISCRETE
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |