US4079882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration-isolating apparatus for a centrifuge
Assignee: Kubota Seisakusho KK
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Filing: 1977-03-18
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Granted: 1978-03-21
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Expires: 1997-03-18
Abstract
Abstract A vibration-isolating apparatus for a centrifuge comprising a rotor mounted by means of at least one coil spring in a casing, wherein to dampen vibrations, a flexible belt is wound longitudinally on the coil spring around both ends thereof in a plurality of turns. The belt can be clamped to the ends of the coil spring.
Inventors
- 👤 Ryutaro Mizuyoshi
- 👤 Minoru Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:24
CPC Classifications
F; F16; F16F; F16F3/00; F16F3/02; B; B04; B04B; B04B5/00; B04B5/04; B04B5/0407; B04B5/0414; B04B5/0421; B04B9/00; B04B9/12; F16F15/00; F16F15/02; F16F15/04; F16F15/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
A vibration-isolating apparatus for a centrifuge having a casing, a rotary body including a rotor and an electric motor for driving the rotor, and at least one coil spring dampingly supporting the rotary body in the casing, the improvement comprising a flexible belt wound longitudinally on the coil spring and around both ends thereof, said flexible belt being wound in a plurality of layers.
Claim 2
Dependent Claim
64 words
A vibration-isolating apparatus for a centrifuge having a casing, a rotary body including a rotor and an electric motor for driving the rotor, and at least one coil spring dampingly supporting the rotary body in the casing, the improvement comprising a flexible belt wound longitudinally on the coil spring and around both ends thereof, said flexible belt being wound in a plurality of layers.
Claim 3
Dependent Claim
15 words
An apparatus as claimed in claim 1 wherein the layers are aligned on one another.
Claim 4
Dependent Claim
13 words
An apparatus as claimed in claim 1 wherein the layers are spirally wound.
Claim 5
Dependent Claim
29 words
An apparatus as claimed in claim 1 wherein said belt has at least one outer surface with a relatively high coefficient of friction for frictional contact between said layers.
Claim 6
Dependent Claim
29 words
An apparatus as claimed in claim 1 comprising seat members at the ends of the coil spring, said belt being wound on the outer surface of the seat members.
Claim 7
Dependent Claim
16 words
An apparatus as claimed in claim 5 comprising means clamping the belt against said seat members.
Claim 8
Dependent Claim
28 words
An apparatus as claimed in claim 1 wherein said layers of said belt extend across and over both end surfaces of said spring to completely surround the spring.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |