Patent US3157045A successfully refreshed from Google Patents.
US3157045A
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Vibration testing system
Assignee: Textron Electronics Inc
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Filing: 1960-08-15
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Granted: 1964-11-17
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Expires: 1980-08-15
Abstract
No abstract record available.
Inventors
- 👤 Charles E Maki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:47
CPC Classifications
G; G01; G01M; G01M7/00; G01M7/02; G01M7/022; B; B06; B06B; B06B1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A VIBRATION TESTING SYSTEM COMPRISING A SOURCE OF RANDOM NOISE SIGNALS IN THE AUDIO FREQUENCY RANGE HAVING A GIVEN BANDWIDTH, A MIXING CIRCUIT, A GROUP OF SIGNAL CHANNELS COUPLED BETWEEN SAID SOURCE AND SAID MIXING CIRCUIT, FREQUENCY CHANGING MEANS COUPLED BEFORE SAID SIGNAL CHANNEL AND AFTER SAID MIXING CIRCUIT FOR CAUSING THE CHANNEL SIGNAL FREQUENCIES TO LIE ABOVE THE AUDIO FREQUENCY RANGE WHILE PROVIDING AN OUTPUT WITHIN SAID GIVEN AUDIO FREQUENCY BANDWIDTH, SAID CHANNELS EACH HAVING A FREQUENCY SELECTIVE INPUT FOR COLLECTIVELY DIVIDING THE SIG-
Claim 2
Dependent Claim
85 words
A VIBRATION TESTING SYSTEM COMPRISING A SOURCE OF RANDOM NOISE SIGNALS IN THE AUDIO FREQUENCY RANGE HAVING A GIVEN BANDWIDTH, A MIXING CIRCUIT, A GROUP OF SIGNAL CHANNELS COUPLED BETWEEN SAID SOURCE AND SAID MIXING CIRCUIT, FREQUENCY CHANGING MEANS COUPLED BEFORE SAID SIGNAL CHANNEL AND AFTER SAID MIXING CIRCUIT FOR CAUSING THE CHANNEL SIGNAL FREQUENCIES TO LIE ABOVE THE AUDIO FREQUENCY RANGE WHILE PROVIDING AN OUTPUT WITHIN SAID GIVEN AUDIO FREQUENCY BANDWIDTH, SAID CHANNELS EACH HAVING A FREQUENCY SELECTIVE INPUT FOR COLLECTIVELY DIVIDING THE SIG-
References Cited (Backward Citations)
US2468648A
Cited
US3015949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |