Patent US3103878A successfully refreshed from Google Patents.
US4033642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft mounting apparatus
Assignee: Volkswagen AG
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Filing: 1976-02-18
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Granted: 1977-07-05
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Expires: 1996-02-18
Abstract
Abstract A shaft mounting apparatus includes, in a preferred embodiment, in addition to a bearing, a resilient ring mounted between the shaft and a surface which is concentric to the shaft. The resilient ring adds additional stiffening to the shaft which shifts the resonant frequency of the shaft to a frequency above the frequency range at which the shaft is to operate.
Inventors
- 👤 Ulrich Sorgatz
- 👤 Hans-Jurgen Kogge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:22
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/36; F16F1/371; F16F15/00; F16F15/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
88 words
An apparatus for mounting an extended shaft, having a selected range of operating frequencies and a natural resonant vibrational frequency, to a support structure, comprising: at least one bearing supporting said shaft arranged between said structure and said shaft, and having bearing play; a support collar, on said structure, having an interior surface concentric to said shaft; and means, permanently resilient in all radial directions, mounted between said shaft and said surface, for shifting the resonant frequency of said shaft to a frequency above said operating frequency range.
Claim 2
Independent Claim
88 words
An apparatus for mounting an extended shaft, having a selected range of operating frequencies and a natural resonant vibrational frequency, to a support structure, comprising: at least one bearing supporting said shaft arranged between said structure and said shaft, and having bearing play; a support collar, on said structure, having an interior surface concentric to said shaft; and means, permanently resilient in all radial directions, mounted between said shaft and said surface, for shifting the resonant frequency of said shaft to a frequency above said operating frequency range.
Claim 3
Dependent Claim
18 words
An apparatus as specified in claim 1 wherein said resilient frequency shift means is arranged near said bearing.
Claim 4
Dependent Claim
21 words
An apparatus as specified in claim 2 wherein said interior surface is an extension of a bearing surface of said bearing.
Claim 5
Dependent Claim
28 words
An apparatus as specified in claim 1 wherein said resonant frequency shifting means comprises a ring which is wear resistant on at least one of its radial surfaces.
Claim 6
Dependent Claim
18 words
An apparatus as specified in claim 4 wherein said ring comprises a meander-shaped ring of substantially flat material.
Claim 7
Dependent Claim
21 words
An apparatus as specified in claim 4 wherein said ring is a plastic ring having at least one stiffening, ring-shaped insert.
Claim 8
Dependent Claim
15 words
An apparatus as specified in claim 6 wherein said insert has an arc-shaped radial cross-section.
Claim 9
Dependent Claim
32 words
An apparatus as specified in claim 7 wherein there are provided more than one insert and the arcs of at least some of said inserts are arranged to face in opposite directions.
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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |