US4183572A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway flanged wheel vibration dampening assembly
Assignee: Airbus Defence and Space GmbH
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Filing: 1977-11-10
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Granted: 1980-01-15
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Expires: 1997-11-10
Abstract
Abstract The present noise damping apparatus is especially intended for damping the noise caused by wheels running on rails. For this purpose there is provided a noise screen connected to at least one surface of the rail wheel in a force transmitting, yet removable manner. The noise screen comprises vibration damping reed members. This screen prevents noise generated by the wheel proper from radiating outwardly and it also acts as a noise absorber for the impact noise propagating in the wheel and other solid bodies.
Inventors
- 👤 Helmut Albrecht
- 👤 Oskar Bschorr
- 👤 Helmut Hassel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:15
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; B; B60; B60B; B60B17/00; B60B17/0006; B60B17/0013; B60B17/0017; B60B2900/00; B60B2900/10; B60B2900/133; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19907
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
57 words
An apparatus for damping noise on a rail wheel, comprising damping disk means including a plurality of vibration absorbing plate elements, means securing said damping disk means to at least one side of said rail wheel in a force transmitting manner, and slot means dividing said damping disk means into said plurality of vibration absorbing plate elements.
Claim 2
Independent Claim
57 words
An apparatus for damping noise on a rail wheel, comprising damping disk means including a plurality of vibration absorbing plate elements, means securing said damping disk means to at least one side of said rail wheel in a force transmitting manner, and slot means dividing said damping disk means into said plurality of vibration absorbing plate elements.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1, wherein said vibration absorbing plate elements are substantially sector shaped, and wherein said slot means extend substantially radially between adjacent sectors.
Claim 4
Dependent Claim
37 words
The apparatus of claim 1, wherein said damping disk means comprise two semicircular sections divided into several sections by said slot means, each section having a centrally located recess for the axle or hub of the wheel.
Claim 5
Dependent Claim
45 words
The apparatus of claim 1, wherein said damping disk means comprise two substantially parallel wall members extending in spaced relationship to each other, with resilient means sandwiched between said wall members to absorb vibrations, said wall members being divided by said slot means into sections.
Claim 6
Dependent Claim
21 words
The apparatus of claim 4, wherein said absorbing means sandwiched between said wall members comprise a radially inwardly reaching extension lip.
Claim 7
Dependent Claim
34 words
The apparatus of claim 4, further comprising V-shaped gaps in said wall members, whereby the V-shaped gaps in one wall member are spaced relative to the respective V-shaped gaps in the other wall member.
Claim 8
Dependent Claim
23 words
The apparatus of claim 1, wherein said vibration absorbing plate elements further incorporate substantially V-shaped gaps the tips of which point radially outwardly.
Claim 9
Dependent Claim
41 words
The apparatus of claim 1, wherein said securing means comprise a recess in said rail wheel, a holding ring element fitting into said recess, and means securing said holding ring to said vibration absorbing plate elements of said damping disk means.
Claim 10
Dependent Claim
50 words
The apparatus of claim 1, wherein said securing means comprise recess means in said rail wheel and clamping ring means securely held in said recess means, said clamping ring means pressing said vibration absorbing plate elements of said damping disk means in a force transmitting manner against the rail wheel.
Claim 11
Dependent Claim
16 words
The apparatus of claim 1, wherein said securing means are removably secured to the rail wheel.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-14 | 1983-07-16 | 1984-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-14 | 1987-07-16 | 1988-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-14 | 1991-07-16 | 1992-01-15 | $7700.00 | Window Closed / Lapsed |