US4099667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preventing vibration in a centrifugal separator
Assignee: Kubota Seisakusho KK
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Filing: 1977-02-17
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Granted: 1978-07-11
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Expires: 1997-02-17
Abstract
Abstract An apparatus for preventing vibration in a centrifugal separator comprising an upright electric motor supported by a resilient member from a machine casing and wherein excessive vibration of the motor is detected for opening an electric power circuit of the motor. A mercury type vibration sensitive element is employed in the detector and comprises a mercury contact in a metallic casing. The vibration sensitive element is attached to a resilient plate and is in pressure contact with a lateral surface of a casing of the motor.
Inventors
- 👤 Tadahiro Uchida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:25
CPC Classifications
B; B04; B04B; B04B9/00; B04B9/14; B04B9/146
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
118 words
In a centrifugal separator having an upright electric motor resiliently supported in a casing and adapted to drive a rotor in rotation, an improvement comprising vibration sensitive means coupled to the motor to control energization thereof, and means supporting said vibration sensitive means in pressure contact with said motor such that if said motor undergoes excessive vibration, said vibration sensitive means deactivates the motor, said means supporting said vibration sensitive means comprising a resilient arm carrying said vibration sensitive means, said motor comprising a casing, said arm being in lateral pressure contact with said casing to respond to radial vibration of the casing of the motor and thereby transmit only such radial vibration to said vibration sensitive means.
Claim 2
Dependent Claim
118 words
In a centrifugal separator having an upright electric motor resiliently supported in a casing and adapted to drive a rotor in rotation, an improvement comprising vibration sensitive means coupled to the motor to control energization thereof, and means supporting said vibration sensitive means in pressure contact with said motor such that if said motor undergoes excessive vibration, said vibration sensitive means deactivates the motor, said means supporting said vibration sensitive means comprising a resilient arm carrying said vibration sensitive means, said motor comprising a casing, said arm being in lateral pressure contact with said casing to respond to radial vibration of the casing of the motor and thereby transmit only such radial vibration to said vibration sensitive means.
Claim 3
Dependent Claim
19 words
The improvement as claimed in claim 1 wherein said vibration sensitive means comprises a mercury type vibration sensitive element.
Claim 4
Dependent Claim
46 words
The improvement as claimed in claim 2 wherein said mercury type vibration sensitive element comprises a hermetically sealed casing, a pool of mercury in said casing, an insulating liquid on said mercury, and an electrode extending into said casing for normally contacting the pool of mercury.
Claim 5
Dependent Claim
19 words
The improvement as claimed in claim 3 wherein said motor is mounted for producing rotation about a vertical axis.
Claim 6
Dependent Claim
16 words
The improvement as claimed in claim 4 wherein said resilient arm carries said hermetically sealed casing.
Claim 7
Dependent Claim
19 words
The improvement as claimed in claim 5 wherein said resilient arm is made of rubber and is disposed horizontally.
Claim 8
Dependent Claim
34 words
The improvement as claimed in claim 6 wherein the supporting means further comprises a bracket secured in the separator and carrying said resilient arm in lateral pressure contact with said casing of the motor.
Claim 9
Dependent Claim
29 words
The improvement as claimed in claim 7 wherein the rotor is disposed on one side of the motor and the resilient arm on the other side of the motor.
Claim 10
Dependent Claim
15 words
The improvement as claimed in claim 8 wherein the rotor is above the resilient arm.
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-10 | 1982-01-09 | 1982-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-10 | 1986-01-09 | 1986-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-10 | 1990-01-09 | 1990-07-11 | $7700.00 | Window Closed / Lapsed |