US3621713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument for measuring masses and forces
Assignee: K Tron Patent AG
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Filing: 1970-01-19
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Granted: 1971-11-23
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Expires: 1990-01-19
Abstract
Abstract THE INVENTION RELATES TO LOD-MEASURING INSTRUMENTS WHICH EMPLOY ELECTRICAL MEANS AS THE LOAD-MEASURING MEANS. IN THE INSTRUMENT OF THIS INVENTION, THE LOAD-MEASURING MEANS COMPRISES A PAIR OF TENSIONED STRINGS WHICH ARE ELECTRICALLY EXCITED TO VIBRATE. A LOAD IS APPLIED TO SAID STRINGS SO AS TO VARY THE TENSION WITH A CONSEQUENT VARIATION IN THEIR VIBRATION FREQUENCY, WHICH INFORMATION IN TURN IS TRANSMITTED TO A DIGITAL DEVICE WHICH TRANSLATES IT INTO A LOAD-INDICATING QUANTITY.
Inventors
- 👤 Armin Wirth
- 👤 Mario Gallo
- 👤 Johannes Wirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:11
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/10; G01L1/106; G01G; G01G23/00; G01G23/06; G01G3/00; G01G3/12; G01G3/16; G01G3/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |