US3745815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for evaluating the vibrations of a revolving member
Assignee: SKF Industrie SpA
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Filing: 1971-10-05
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Granted: 1973-07-17
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Expires: 1991-10-05
Abstract
Abstract A device for evaluating the vibrations of a revolving member comprises a detecting head for detecting the vibrations and their amplitude, an integrating circuit actuated by a monostable multivibrator that generates a pulse in correspondence with each detected vibrations, and an amplitude discriminating circuit whose threshold value is such as to emit a signal only when a signal received thereby from the integrating circuit has an amplitude corresponding to the sum of a plurality of those pulses.
Inventors
- 👤 P Bentone
- 👤 P Golzio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:32
CPC Classifications
G; G01; G01H; G01H1/00; G01H1/003; G01M; G01M13/00; G01M13/04; G01M13/045
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
A device for evaluating the vibrations of a revolving member, comprising detecting means detecting the vibrations of said revolving member, means generating electrical pulses of different amplitude that varies with the magnitude of the vibrations, means for receiving said pulses of different amplitude and for emitting pulses of equal amplitude whenever pulses of amplitude greater than a predetermined minimum amplitude are received, and means for receiving said pulses of equal amplitude and for generating a signal when the number of said pulses of equal amplitude exceeds a predetermined number per unit time.
Claim 2
Independent Claim
92 words
A device for evaluating the vibrations of a revolving member, comprising detecting means detecting the vibrations of said revolving member, means generating electrical pulses of different amplitude that varies with the magnitude of the vibrations, means for receiving said pulses of different amplitude and for emitting pulses of equal amplitude whenever pulses of amplitude greater than a predetermined minimum amplitude are received, and means for receiving said pulses of equal amplitude and for generating a signal when the number of said pulses of equal amplitude exceeds a predetermined number per unit time.
Claim 3
Independent Claim
153 words
A device for evaluating the vibrations of a revolving member, comprising detecting means detecting the vibrations of said revolving member and emitting signals that vary as said vibrations, an amplifying circuit and at least one filter to eliminate the components of said signals which are not produced by vibrations of the revolving member, a first amplitude discriminating circuit receiving signals from said amplifying circuit and filter, said amplitude discriminating circuit having a threshold level that permits the exit therefrom solely of signals corresponding to vibrations of at least a predetermined minimum amplitude, a monostable multi-vibrator that receives the last-named signals and which generates a pulse in correspondence with each said received signal, an integrating circuit actuated by said monostable multi-vibrator, and a second amplitude discriminating circuit having a threshold value such as to emit a signal only when the signals delivered thereto by the integrating circuit exceed a predetermined number per unit time.
Claim 4
Independent Claim
153 words
A device for evaluating the vibrations of a revolving member, comprising detecting means detecting the vibrations of said revolving member and emitting signals that vary as said vibrations, an amplifying circuit and at least one filter to eliminate the components of said signals which are not produced by vibrations of the revolving member, a first amplitude discriminating circuit receiving signals from said amplifying circuit and filter, said amplitude discriminating circuit having a threshold level that permits the exit therefrom solely of signals corresponding to vibrations of at least a predetermined minimum amplitude, a monostable multi-vibrator that receives the last-named signals and which generates a pulse in correspondence with each said received signal, an integrating circuit actuated by said monostable multi-vibrator, and a second amplitude discriminating circuit having a threshold value such as to emit a signal only when the signals delivered thereto by the integrating circuit exceed a predetermined number per unit time.
Claim 5
Dependent Claim
24 words
A device as claimed in claim 2, and a relay control circuit adapted to be energized by signals from said second amplitude discriminating circuit.
Claim 6
Dependent Claim
26 words
A device as claimed in claim 2, and means for feeding the signal at the output of said second amplitude discriminating circuit to an indicating device.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |