US3664151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spindle for centrifuges
Assignee: BWS Technologie GmbH
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Filing: 1969-10-16
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Granted: 1972-05-23
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Expires: 1989-10-16
Abstract
Abstract A spindle which forms part of a suspended centrifugal and is mounted in the machine frame at its upper end. The bowl or basket is attached to the lower end of the spindle and the latter tapers from the lower toward the upper end so that its flexural strength is at least substantially constant all the way from the hub of the bowl or basket to the bearing in the frame.
Inventors
- 👤 Kurt Pause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:52
CPC Classifications
B; B04; B04B; B04B9/00; B04B9/12; F; F16; F16F; F16F15/00; F16F15/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
70 words
As a novel article of manufacture, a spindle for use in centrifugal machines of the type wherein the spindle is swingably and rotatably mounted in the region of its upper end and fixedly mounted in the region of its lower end in the hub of a load accommodating container carried by the spindle, said spindle tapering continuously from the region of said lower to said region of its upper end.
Claim 2
Dependent Claim
70 words
As a novel article of manufacture, a spindle for use in centrifugal machines of the type wherein the spindle is swingably and rotatably mounted in the region of its upper end and fixedly mounted in the region of its lower end in the hub of a load accommodating container carried by the spindle, said spindle tapering continuously from the region of said lower to said region of its upper end.
Claim 3
Dependent Claim
81 words
A spindle as defined in claim 1, wherein the taper is such that the flexural strength of the spindle is at least substantially uniform between said ends thereof so that if an imbalance occurs in the container during rotation of the spindle and the container fixed to the lower end thereof, said spindle will bend along a curve substantially forming a portion of a circle, whereby permanent deformation of the spindle in the region of the lower end thereof is prevented.
References Cited (Backward Citations)
US96186A
Cited
US2213004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |