US3144774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration detection apparatus
Assignee: Stewart Warner Corp
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Filing: 1961-02-14
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Granted: 1964-08-18
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Expires: 1981-02-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Bjorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:22
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/14; G01M1/16; G01M1/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
72 words
APPARATUS FOR DETECTING UNBALANCE IN A ROTATING MECHANISM COMPRISING MEANS FOR PRODUCING A FLUCTUATING ELECTRIC SIGNAL RESPONSIVE TO VIBRATIONAL FORCES CAUSED BY AN UNBALANCE IN THE ROTATING MECHANISM; ELECTRIC METER MEANS OPERATIVE RESPONSIVE TO THE RECEIPT OF SAID FLUCTUATING SIGNAL FOR READING THE MAGNITUDE OF THE UNBALANCE AND COMPRISING CONTACT MEANS OPERABLE RESPONSIVE TO A PREDETERMINED MAGNITUDE OF THE UNBALANCE; ALARM MEANS; AND MEANS FOR CONNECTING SAID ALARM MEANS TO A LINE
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |