US3791481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Echo-noise absorption device
Assignee: Individual
•
Filing: 1973-07-25
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Granted: 1974-02-12
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Expires: 1993-07-25
Abstract
Abstract An echo-noise absorption device for absorbing echo-noise which is generated from a moving metal machine part or transmitted from said moving machine metal part through another stationary machine metal part comprising at least one echo noise absorption unit which includes a soft metal echo-noise absorption element having one face to be applied to the adjacent surface of said moving machine metal part or stationary metal machine part; a non-metal anti-noise transmission element in contact with the face of said soft metal element opposite to said machine part contact face; a cup-shaped cover surrounding the entire periphery and the face of said non-metal element opposite to said soft metal element and portion of the periphery of said metal element; and a fastening means extending through said soft metal and non-metal elements and cover so as to fixedly secure the elements and cover together to said moving or stationary machine part.
Inventors
- 👤 H Yazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:54
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/16; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19907
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
147 words
An echo-noise absorption device for absorbing echo-noise which is generated from a moving metal machine part or transmitted from said moving metal machine part through a stationary metal machine part comprising at least one echo-noise absorption unit which includes a soft metal echo-noise absorption element having one face to be applied to the adjacent surface of said machine part; a non-metal resilient anti-noise transmission element in contact with the face of said soft metal element opposite to said machine part contact face of the latter; a cupshaped cover surrounding the entire periphery and the face of said non-metal element opposite to said soft metal element and portion of the periphery of the soft metal element; and a fastening means extending through said soft metal and non-metal elements and cover so as to fixedly secure said elements and cover together to said adjacent surface of the machine part.
Claim 2
Dependent Claim
147 words
An echo-noise absorption device for absorbing echo-noise which is generated from a moving metal machine part or transmitted from said moving metal machine part through a stationary metal machine part comprising at least one echo-noise absorption unit which includes a soft metal echo-noise absorption element having one face to be applied to the adjacent surface of said machine part; a non-metal resilient anti-noise transmission element in contact with the face of said soft metal element opposite to said machine part contact face of the latter; a cupshaped cover surrounding the entire periphery and the face of said non-metal element opposite to said soft metal element and portion of the periphery of the soft metal element; and a fastening means extending through said soft metal and non-metal elements and cover so as to fixedly secure said elements and cover together to said adjacent surface of the machine part.
Claim 3
Dependent Claim
20 words
The echo-noise absorption device as set forth in claim 1, in which said moving metal machine part is a gear.
Claim 4
Dependent Claim
25 words
The echo-noise absorption device as set forth in claim 1, in which said moving metal machine part is the shank of a hammering machine tool.
Claim 5
Dependent Claim
25 words
The echo-noise absorption device as set forth in claim 1, in which said stationary metal machine part is the gear box of a transmission gear.
Claim 6
Dependent Claim
23 words
The echo-noise absorption device as set forth in claim 1, in which said stationary metal machine part is the cover of an engine.
Claim 7
Dependent Claim
22 words
The echo-noise absorption device as set forth in claim 1, in which said soft metal echo-noise absorption element is formed of lead.
Claim 8
Dependent Claim
23 words
The echo-noise absorption device as set forth in claim 1, in which said non-metal anti-transmission element is formed of natrual or synthetic rubber.
Claim 9
Dependent Claim
27 words
The echo-noise absorption device as set forth in claim 1, in which said metal machine part contact face of the soft metal echo-noise absorption element is flat.
Claim 10
Dependent Claim
27 words
The echo-noise absorption device as set forth in claim 1, in which said machine part contact face of the soft metal element is concaved or convexed conical.
Claim 11
Dependent Claim
29 words
The echo-noise absorption device as set forth in claim 1, in which said machine part contact face of the soft metal echo-noise absorption element is concaved or convexed arcuate.
Claim 12
Dependent Claim
35 words
The echo-noise absorption device as set forth in claim 1, in which a pair of said echo-noise absorption units as disclosed in claim 1 are applied to the opposite surface of said metal machine part.
Claim 13
Dependent Claim
59 words
The echo-noise absorption device as set forth in claim 1, in which said metal machine part has an opening and said soft metal and resilient elements and cover have coaxial openings in alignment with each other and with said opening in the machine part and said fastening means extends through said aligned openings so as to hold them together.
Claim 14
Dependent Claim
25 words
The echo-noise absorption device as set forth in claim 1, in which said soft metal and resilient elements are in the form of a disc.
Claim 15
Dependent Claim
64 words
The echo-noise absorption device as set forth in claim 1, in which said cover is in the form of a circular cup having the bottom which covers the exposed face of said resilient element and a cylindrical side wall which surrounds the entire periphery of said resilient element and portion of said resilient element terminating short of said surface of the metal machine part.
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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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |